Answer:
Your answer is A:5
mrs. barney earns $80 for tutoring for 2 hours. If she gets a 10% raise, how much does she now earn per hour.
please show work
Answer:$88
Step-by-step explanation:
multiply 80 dollars by 10% then add that answer to 80 dollars and that gives you 88 dollars
Daniel worked for 2/13 hours and earned $18.20.
How much would he make if he worked for 5 1/4 hours?
624.75
first get the numeric values simplified
2/13h=0.153h
so 18.20÷0.153=119
meaning he earned 119 dollars every hour
now you can multipy this number with 5.25 to get the answer which is 624.75 dollars
Triangle ABC is similar to triangle XYZ. Side AB measures 2, side BC measures x + 5, side CA measures x + 7, side XY measures 4 and side ZX measures 4x – 2. Find the value of x.
Answer:
[tex]x=8[/tex]
Step-by-step explanation:
In similar triangles, corresponding sides' ratio are equal.
Side AB corresponds to Side XYSide BC corresponds to Side YZSide CA corresponds to Side ZXWe can set up a ratio of [tex]\frac{SideAB}{Side XY}=\frac{SideCA}{Side ZX}[/tex]
Hence, we can write (and solve):
[tex]\frac{Side AB}{Side XY}=\frac{Side CA}{SideZX}\\\frac{2}{4}=\frac{x+7}{4x-2}\\2(4x-2)=4(x+7)\\8x-4=4x+28\\8x-4x=28+4\\4x=32\\x=\frac{32}{4}=8[/tex]
So, x = 8
turn improper fraction into mixed number please help its easy
Answer:
2 1/2
Step-by-step explanation:
You divide and there are 2 two’s that can go into 5 with a remainder of 1
Answer: 2 1/2
Step-by-step explanation:
divide 5/2
you get 1 as a remainder and two at the top
2 1/2
Solve for p:
3 + p < 10
Answer:
p < 7
Step-by-step explanation:
To isolate the p, subtract 3 from both sides to get p < 7.
The correct answer is p < 7
Explanation:
To get your answer you need to first set out you equation, 3 + p < 10. Next, you need to subtract 3 from both sides of the equation, 3 + p - 3 < 10 - 3 = p < 7. Finally, we have our answer of p < 7.
Hope This Helps!!!
-AnimeDabGirl
Kristina, Liz, and Heather all made cookies. Kristina made 2.4 dozen less than 6 times as many dozen as Heather. Liz made 1.8 dozen more than 5 times as many dozen as Heather. If Kristina and Liz made the same number of cookies, how many dozen cookies did Heather make?
Answer:
Based on the number of cookies each girl made and if Kristina and Liz made the same number of cookies, then Heather made 4.2 dozen cookies.
Step-by-step explanation:
In order to find the number of cookies that Heather made, you need to set up two equations that represent the number of cookies that Kristina and Liz each made. Since Kristina made 2.4 dozen less than 6 times as many dozen as Heather, we can represent that with the equation 6c - 2.4. Since Liz made 1.8 dozen more than 5 times as many dozen as Heather, we can represent that with the equation 5c + 1.8. We can set both equations equal to each other since Liz and Kristina made the same number, so 6c - 2.4 = 5c + 1.8. Solving for 'c', which represents how many dozen cookies Heather made, we get 4.2
Let's assign a variable to represent the number of dozens of cookies Heather made. We'll call this variable \( H \).
According to the problem:
- Kristina made \( 6 \times H - 2.4 \) dozen cookies.
- Liz made \( 5 \times H + 1.8 \) dozen cookies.
We are also given that Kristina and Liz made the same number of cookies, so we can set these two expressions equal to each other to find the value of \( H \):
\[ 6H - 2.4 = 5H + 1.8 \]
Now, we'll solve this equation for \( H \).
Step 1: Isolate the variable \( H \) on one side.
To do this, we'll first subtract \( 5H \) from both sides of the equation:
\[ 6H - 5H - 2.4 = 5H - 5H + 1.8 \]
\[ H - 2.4 = 1.8 \]
Step 2: Now we need to get \( H \) alone, so we'll add \( 2.4 \) to both sides:
\[ H - 2.4 + 2.4 = 1.8 + 2.4 \]
\[ H = 4.2 \]
So, Heather made \( 4.2 \) dozen cookies.
To ensure this is the correct number of dozens Heather made, we can plug this value back into the original expressions for Kristina and Liz's cookies to verify that they made the same amount:
Kristina: \( 6 \times 4.2 - 2.4 = 25.2 - 2.4 = 22.8 \) dozen cookies
Liz: \( 5 \times 4.2 + 1.8 = 21 + 1.8 = 22.8 \) dozen cookies
Both Kristina and Liz made 22.8 dozen cookies, confirming our solution that Heather made 4.2 dozen cookies.
write the standard form of the equation of the line through the given point with the given slope THROUGH:(1,2), slope =7, 50 POINTS
The equation of line passes through the point (1, 2) will be;
⇒ y = 7x - 5
What is Equation of line?The equation of line in point-slope form passing through the points
(x₁ , y₁) and (x₂, y₂) with slope m is defined as;
⇒ y - y₁ = m (x - x₁)
Where, m = (y₂ - y₁) / (x₂ - x₁)
Given that;
The point on the line are (1, 2).
And, The slope is,
⇒ m = 7
Now,
Since, The equation of line passes through the point (1, 2).
And, Slope of the line is,
⇒ m = 7
Thus, The equation of line with slope 7 is,
⇒ y - 2 = 7 (x - 1)
⇒ y - 2 = 7x - 7
⇒ y = 7x - 7 + 2
⇒ y = 7x - 5
Therefore, The equation of line passes through the point (1, 2) will be;
⇒ y = 7x - 5
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The points with coordinates (x, -1), (2,2), and (4,3) lie on the same line. What is the value of x?
Find the slope of the line passing throught the points (2, 2) and (4, 3).
The formula of a slope:
[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]
Substitute:
[tex]m=\dfrac{3-2}{4-2}=\dfrac{1}{2}[/tex]
If the point (x, -1) lie on the same line, then the slope of line passing through the points (2, 2) and (x, -1) the same:
Substitute:
[tex]m=\dfrac{-1-2}{x-2}=\dfrac{-3}{x-2}[/tex]
We have the equation:
[tex]\dfrac{-3}{x-2}=\dfrac{1}{2}[/tex] cross multiply
[tex](1)(x-2)=(-3)(2)[/tex]
[tex]x-2=-6[/tex] add 2 to both sides
[tex]x=-4[/tex]
Answer: x = -4.Write an equation of the line that passes through the points (1,1) (5,9)
Answer:
y = 2x - 1
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y-intercept )
To find m use the gradient formula
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
with (x₁, y₁ ) = (1, 1) and (x₂, y₂ ) = (5, 9)
m = [tex]\frac{9-1}{5-1}[/tex] = [tex]\frac{8}{4}[/tex] = 2
y = 2x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
using (1, 1 ), then
1 = 2 + c ⇒ c = 1 - 2 = - 1
y = 2x - 1 ← equation of line
please help ??????????????
Answer:
First box: 6x
Second box: 24
Step-by-step explanation:
9(16)=6x
144 = 6x | divide by 6
144/6 = 6x/6
24 = x
Jayla ate 75% of the jelly beans in the bag. If she ate 24 jelly beans how many were in the bag?
Answer:
32 jelly beans were in the bag
Step-by-step explanation:
We know 75% is 3/4 and that she ate 24, so divide 24 by 3 then multiply it by 4:
24/3= 8
8 x 4 = 32
Final answer:
By dividing the number of jelly beans Jayla ate (24) by 75% and scaling it up to 100%, we determine that the bag initially contained 32 jelly beans.
Explanation:
Jayla ate 75% of the jelly beans in the bag, which equaled 24 jelly beans. To find out how many jelly beans were in the bag originally, we need to find what amount corresponds to 100% if 75% is 24 jelly beans. We perform this calculation by dividing the amount eaten (24 jelly beans) by the percentage she ate (75%), and then multiplying by 100% to scale it up to the total amount.
The calculation goes as follows: (24 / 0.75) = 32. This means there were originally 32 jelly beans in the bag before Jayla ate any.
How much is 0.324 divided by 0.27
Answer:
The answer is 1.2
Step-by-step explanation:
Answer:
1.2
Step-by-step explanation:
You can use a calculator... Or you can ask google this, "What is 0.324 divided by 0.27?"
0.324 divided by 0.27 is 1.2
PLZ DO I NEED ASAP
What is the equation of the line –3x–2y=30 in slope-intercept form? y = mx + b is slope-intercept form Enter your answer in the box.
Answer:
y = -3/2 x -15
Step-by-step explanation:
–3x–2y=30
To get the equation is slope intercept form y=mx+b, we need to solve for y
Add 3x to each side
–3x+3x–2y=3x+30
-2y = 3x+30
Divide by -2
-2y/-2 = 3x/-2 + 30 /-2
y = -3/2 x -15
The slope is -3/2 and the y interceot us -15
The graph shows the function f(x).
What is the function's average rate of change from x = 9 to x = 15?
Enter your answer in the box.
Answer:
3/2
Step-by-step explanation:
To find the rate of change
f(x2) - f(x1)
------------------ = rate of change
x2-x1
Looking at the graph
f(15) = 12
f(9) = 3
Substituting this into the equation
12-3
---------
15-9
9
------
6
3/2
The rate of change is 3/2
The average rate of change of a function from x = 9 to x = 15 is calculated by the slope of the secant line, which is (f(15) - f(9)) / (15 - 9). Specific function values are needed to perform this calculation.
Explanation:To calculate the function's average rate of change from x = 9 to x = 15, you can use the formula for the slope of the secant line between these two points on the graph of the function. This is given by the difference in the function values at these points divided by the difference in x-values:
Average Rate of Change = (f(15) - f(9)) / (15 - 9).
You would need the specific function values f(15) and f(9) in order to calculate this. If the function is linear, like the one represented by f(x) = 7x, you would substitute these x-values into the function to get f(15) = 7*15 and f(9) = 7*9, and then perform the calculation. However, without the actual function values, we cannot complete this calculation.
If f(x)=x2-2x-8 and g(x)=1/4x-1 for which value of x is f(x)=g(x)
[tex]f(x)=x^2-2x-8;\ g(x)=\dfrac{1}{4}x-1\\\\f(x)=g(x)\iff x^2-2x-8=\dfrac{1}{4}x-1\qquad\text{multiply both sides by 4}\\\\4x^2-8x-32=x-4\qquad\text{subtract x from both sides}\\\\4x^2-9x-32=-4\qquad\text{add 4 to both sides}\\\\4x^2-9x-28=0\\\\4x^2-16x+7x-28=0\\\\4x(x-4)+7(x-4)=0\\\\(x-4)(4x+7)=0\iff x-4=0\ \vee\ 4x+7=0\\\\x=4\ \vee\ 4x=-7\\\\\boxed{x=4\ \vee\ x=-\dfrac{7}{4}}[/tex]
The following graph depicts the total cost of purchasing blueberries at Blue Basket Farm at certain price per pound.
The graph is: A) linear. B) nonlinear.
The graph represents a: A) discrete function
B) continuous function
Answer:
A.) Linear
B.) Continuous function
Step-by-step explanation:
Its linear because it is not all over the place and continuous because it does not stop it will keep going because it is a ray
Answer: The graph is A) Linear
The graph represents a B) Continuous function.
Step-by-step explanation:
Since we have given a figure which depicts the total cost of purchasing blueberries at Blue Basket Farm at certain price per pound.
Since the graph is linear .
As we can write it as :
At x = 1, y = 4
At x = 2 , y = 8
At x = 3, y = 12
So, it will become
[tex]y=kx[/tex], where k = 4 units.
So, it is linear graph.
The graph is continuous function as it does not break any where and it is unbroken line.
hence, the graph is A) Linear
The graph represents a B) Continuous function.
PLEASE SHOW WORK
Solve using substitution
x=y+6
y=x+4
Answer:
no solution
Step-by-step explanation:
1. Substitute the value of into the equation. y = y + 6 + 4
2. Solve. the system has no solution because y = y.
Darious is training for the marathon and he usually runs a mile in 8.5 minutes how long will it take him to run the marathon which is 26.2 miles long
Answer:
222.7 minutes
Step-by-step explanation:
You multiply 26.2 by 8.5
Answer:9.5 is the anser
Step-by-step explanation:
Rachel is driving from New York to Dayton Florida a distance of 1034 miles. How Much Time Is Saved By Doing The Trip At An Average Speed Of 60mph as compared with 55 mph? Round to the nearest half hour
By increasing her speed from 55 mph to 60 mph, Rachel can save approximately 1.5 hours on her 1034-mile trip from New York to Dayton, Florida.
Explanation:The subject of this question is Mathematics, specifically dealing with the concept of speed, distance, and time. To answer your question, we need to calculate how long the trip would take at each speed and then find the difference.
First, we calculate the time taken when the average speed is 55 mph. The formula to calculate time is distance divided by speed. So, 1034 miles divided by 55 mph equals about 18.8 hours.
Next, we do the same for 60 mph. 1034 miles divided by 60 mph equals about 17.2 hours.
The difference between the two times will give the time saved by increasing the speed to 60 mph from 55 mph. So, 18.8 hours - 17.2 hours equals 1.6 hours, which is approximately 1.5 hours when rounded to the nearest half hour.
Therefore, Rachel can save about 1.5 hours driving at an average speed of 60 mph compared to 55 mph over the distance of 1034 miles.
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The local market is selling fresh fruit in baskets. The weights and amounts charged are shown below. For fruit weighing greater than or equal to 0.01 pounds and less than or equal to 0.5 pounds, the amount charged is $2.00. For fruit weighing greater than 0.5 pounds and less than or equal to 1.0 pounds, the amount charged is $3.50. For fruit weighing greater than 1.0 pounds and less than or equal to 1.5 pounds, the amount charged is $5.00. For fruit weighing greater than 1.5 pounds and less than or equal to 2.0 pounds, the amount charged is $6.50. For fruit weighing greater than 2.0 pounds and less than or equal to 2.5 pounds, the amount charged is $8.00. Which graph represents the function described?
Answer:
The graph is shown below.
Step-by-step explanation:
Let x be the weight of fruit in pounds and P(x) be the price of fruit.
For fruit weighing greater than or equal to 0.01 pounds and less than or equal to 0.5 pounds, the amount charged is $2.00.
P(x) = $2.00 for 0.01 ≤ x ≤ 0.5
For fruit weighing greater than 0.5 pounds and less than or equal to 1.0 pounds, the amount charged is $3.50.
P(x) = $3.50 for 0.5 < x ≤ 1.0
For fruit weighing greater than 1.0 pounds and less than or equal to 1.5 pounds, the amount charged is $5.00.
P(x) = $5.00 for 1.0 < x ≤ 1.5
For fruit weighing greater than 1.5 pounds and less than or equal to 2.0 pounds, the amount charged is $6.50.
P(x) = $6.50 for 1.5 < x ≤ 2.0
For fruit weighing greater than 2.0 pounds and less than or equal to 2.5 pounds, the amount charged is $8.00.
P(x) = $8.00 for 2.0 < x ≤ 2.5
It is a piecewise floor function. We have open circle on left side of each floor except first floor because the sign of inequality in all other is < .
We have closed circle on right side of each floor because the sign of inequality is ≤ .
The graph is shown below.
Find the perimeter and area of the polygon shown below. The polygon is a trapezoid made up of a rectangle and a right triangle. The rectangle is 20 feet long and 15 feet wide. The right triangle joins the rectangle at a side that is 15 feet wide, and this is the height of the triangle. The base of the triangle is 8 feet and the hypotenuse is 17 feet.
The perimeter of the polygon is 110 feet and the area is 360 square feet.
Explanation:The polygon consists of a rectangle and a right triangle. To find the perimeter, we add the lengths of all sides. The length of the rectangle is 20 feet and its width is 15 feet, so the perimeter of the rectangle is 2 * (20 + 15) = 70 feet. The length of the base of the right triangle is 8 feet and the hypotenuse is 17 feet. The other side of the triangle is the height, which is given as 15 feet. Therefore, the perimeter of the polygon is 70 + 8 + 15 + 17 = 110 feet.
To find the area, we calculate the area of the rectangle and the triangle separately and then add them together. The area of the rectangle is length * width = 20 * 15 = 300 square feet. The area of the right triangle is 0.5 * base * height = 0.5 * 8 * 15 = 60 square feet. Therefore, the area of the polygon is 300 + 60 = 360 square feet.
In each family of functions, the function is the most basic function in the family
Answer:
I think it would be linear because its really easy?!
Step-by-step explanation:
can√(a²+b²) be written as √(a+b)?????
Answer:
It can be written that way, but the functions are not the same. The numbers the would be plugged in would not produce the same answer.
Please help!! What is the value of the following expression when x=3 and y= -2?
Answer:
20 is the answer.
Step-by-step explanation:
Substitute 3 in for x and -2 in for y.
4(3) - (-2 to the third power)
12 - -8 = 12 + 8
The answer is 20
Please mark brainliest as that would really help out :3
Walking on his own, the distance, D, in feet, that Roberto can cover in M, minutes is given by the function D(m)=264m. When he walks on the moving sidewalk at the airport, the distance, A, in feet, that he can cover in m m minutes is given by the function A(m)=440m. Let B be the distance, in feet, that Roberto would travel on the moving sidewalk in m m minutes if he were standing still. Write a formula for B(m) in terms of D(m) and A(m).
Answer:
B(m)=A(m)-D(m)
B(m)=176m
Step-by-step explanation:
we are given
Walking on his own, the distance, D, in feet, that Roberto can cover in M, minutes is given by the function
D(m)=264m
When he walks on the moving sidewalk at the airport, the distance, A, in feet, that he can cover in m m minutes is given by the function
A(m)=440m
B is the distance, in feet, that Roberto would travel on the moving sidewalk in m minutes if he were standing still
moving sidewalk distance = standstill distance + walking distance
A(m)=D(m)+B(m)
so, we get
B(m)=A(m)-D(m)
now, we can plug values
B(m)=440m-264m
B(m)=176m
Final answer:
To find the distance B(m) that Roberto would travel on a moving sidewalk in m minutes if he stood still, one must subtract the function for walking alone D(m) from the function for walking on a moving sidewalk A(m). Thus, B(m) is calculated as B(m) = A(m) - D(m), resulting in B(m) = 176m.
Explanation:
The student needs to find the formula for the distance B(m) that Roberto would travel on the moving sidewalk in m minutes if he stands still, in terms of the functions D(m) and A(m). The function D(m) = 264m represents the distance Roberto covers by walking on his own in m minutes, and A(m) = 440m represents the distance covered while walking on a moving sidewalk.
Since A(m) represents the combined effect of walking and the moving sidewalk, and D(m) represents just walking, the difference A(m) - D(m) will give us the contribution of the moving sidewalk alone, while Roberto stands still. Thus, the formula for B(m) is:
B(m) = A(m) - D(m)
B(m) = 440m - 264m
B(m) = 176m
The formula B(m) indicates the distance Roberto would cover on the moving sidewalk if he did not walk and just stood still.
witch ordered pair is the solution to the system of equations
{-5x-3y=12
{y=x-12
[tex]\left\{\begin{array}{ccc}-5x-3y=12&(**)\\y=x-12&(*)\end{array}\right\\\\\text{Substitute}\ (*)\ \text{to}\ (**):\\\\-5x-3(x-12)=12\qquad\text{use distributive property}\\-5x+(-3)(x)+(-3)(-12)=12\\-5x-3x+36=12\qquad\text{subtract 36 from both sides}\\-8x=-24\qquad\text{divide both sides by (-8)}\\\boxed{x=3}\\\\\text{Put the value of x to}\ (**):\\\\y=3-12\\\boxed{y=-9}\\\\Answer:\ \boxed{x=3\ and\ y=-9\to(3,\ -9)}[/tex]
A positive real number is 6 less than another. If the sum of the square of the two numbers is 38, then finds the numbers.
Answer:
There seems to be a typo error but still this has solution.
Let the number be = x
A positive real number is 6 less than another. Means the second will be [tex](x+6)[/tex]
The sum of the square of the two numbers is 38.
[tex]x^{2} +(x+6)^{2} =38[/tex]
=> [tex]x^{2} +36+12x+x^{2} =38[/tex]
=> [tex]2x^{2}+12x+36 =38[/tex]
=> [tex]2x^{2}+12x=2[/tex]
=> [tex]2x^{2}+12x-2=0[/tex]
Taking out 2 common;
=> [tex]x^{2}+6x-1=0[/tex]
Solving this quadratic equation, we get;
[tex]x=-3+\sqrt{10}[/tex] and [tex]x=-3-\sqrt{10}[/tex]
As positive number is needed, we have [tex]-3+\sqrt{10}[/tex]
or x = [tex]\sqrt{10}-3[/tex]
x = 0.162277
And other number is 6.162277.
Given:
A positive real number is 6 less than another. The sum of the square of the two numbers is 38.Question:
Find out the numbers.
Problem-solving:
Let us use [tex]\boxed{ \ x \ }[/tex] to represent the positive real number.
This positive real number is 6 less than another. The other number is [tex]\boxed{ \ x + 6 \ }[/tex]
The sum of the square of the two numbers is 38, i.e., [tex]\boxed{ \ x^2 + (x + 6)^2 = 38 \ }[/tex]
Let us work on expanding it.
[tex]\boxed{ \ x^2 + (x + 6)^2 = 38 \ }[/tex]
Recall that [tex]\boxed{ \ (a + b)^2 = a^2 + 2ab + b^2 \ }[/tex]
[tex]\boxed{ \ x^2 + x^2 + 12x + 36 = 38 \ }[/tex]
[tex]\boxed{ \ 2x^2 + 12x + 36 - 38 = 0 \ }[/tex]
[tex]\boxed{ \ 2x^2 + 12x - 2 = 0 \ }[/tex]
Both sides are divided by two.
[tex]\boxed{ \ x^2 + 6x - 1 = 0 \ }[/tex]
Let us solve the equation by using the quadratic formula.
[tex]\boxed{ \ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \ }[/tex]
a = 1b = 6c = -1[tex]\boxed{ \ x = \frac{-6 \pm \sqrt{6^2 - 4(1)(-1)}}{2(1)} \ }[/tex]
[tex]\boxed{ \ x = \frac{-6 \pm \sqrt{36 + 4}}{2} \ }[/tex]
[tex]\boxed{ \ x = \frac{-6 \pm \sqrt{40}}{2} \ }[/tex]
[tex]\boxed{ \ x = \frac{-6 \pm 2\sqrt{10}}{2} \ }[/tex]
[tex]\boxed{ \ x = \frac{-6}{2} \pm \frac{2\sqrt{10}}{2} \ }[/tex]
[tex]\boxed{ \ x = -3 \pm \sqrt{10} \ }[/tex]
[tex]\boxed{ \ x_1 = -3 + \sqrt{10} \ . \ . \ . \ x_1 > 10 \ }[/tex] this is fulfilled.
[tex]\boxed{ \ x_2 = -3 - \sqrt{10} \ . \ . \ . \ x_2 < 10 \ }[/tex]
Thus, the positive real number is [tex]\boxed{ \ x = -3 + \sqrt{10} \ }[/tex]The other number is [tex]\boxed{ \ (-3 + \sqrt{10}) + 6 \rightarrow \boxed{ \ 3 + \sqrt{10} \ }}[/tex][tex]\boxed{ \sqrt {10} = 3.162 \ }[/tex]
Therefore [tex]\boxed{ \ x = -3 + 3.162 \rightarrow \boxed{ \ 0.162 \ }}[/tex]And the other number is [tex]\boxed{ \ 0.162 + 6 \rightarrow \boxed{ \ 6.162 \ }}[/tex]Notes:
[tex]\boxed{ \ ax^2 + bx + c = 0, \ \ \ \ \ a \neq 0 \ }[/tex] is a quadratic equation in standard form.
x is a variable a, b, and c are real number coefficientsMethods of solving quadratic equations include:
Factoring and using the zero product property: [tex]\boxed{ \ (x - a)(x - b) = 0 \ } \ if \ and \ only \ if \ \boxed{ \ (x - a) = 0 \ or \ (x - b) = 0 \ }[/tex]Using the square root property: [tex]\boxed{ \ x^2 = a, \ then \ x = \pm \sqrt{a} \ }[/tex]Completing the square: [tex]\boxed{ \ x^2 + bx + \bigg({\frac{b}{2}} \bigg)^2 = \bigg( x + \frac{b}{2} \bigg)^2 \ }[/tex]Using the quadratic formula: [tex]\boxed{ \ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \ }[/tex]Learn moreFactoring methods https://brainly.com/question/2568692What is the y-intercept of the quadratic function f(x) = (x – 6)(x – 2)? https://brainly.com/question/1332667What are the coordinates of the vertex of the graph? https://brainly.com/question/1286775Keywords: a positive real number is 6, less than another, if the sum of the square, 38, then finds, quadratic equation, methods, factoring, the zero product property, the square root, completing, the quadratic formula
PLEASE I BEG YOU TOO HELP ME OR ELSE IM GOING TK FAIL MY CLASS
Explanation: For questions 4-11, plug in the values of the variables into the equations. Ex no. 8: 7.8 + 3.5(w) where w=6.8. Plug 6.8 into the equation: 7.8 + 3.5(6.8) = 7.8 + 23.8 = 31.6 is the answer.
For questions 12-15, the order of operations is Please Excuse My Dear Aunt Sally: Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction. In other words, solve each equation according to the arrangement of the operations. Ex no. 15: y² - 10 ÷ 5 + x where x = 2.5 and y = 4. Plug these numbers into the equation: 4² - 10 ÷ 5 + 2.5. The order of operations says that parenthesis should be solved first. Since there are no parenthesis, we can skip this operation. The next operation is exponents. 4² has an exponent of 2, which means that we multiply 4 by itself 2 times to get 16 (4 x 4 = 16). We now have 16 - 10 ÷ 5 + 2.5. The next operation is multiplication. There is no multiplication in this equation, so we skip this operation. Next is division. We can divide -10 by 5 to get -2. We now have 16 - 2 + 2.5 (Do not change an addition sign unless you are dividing a negative number by a positive number). The next operation is addition. We can add -2 and 2.5 to get 0.5. Lastly, we can also add 16 by 0.5: 16 + 0.5 = 16.5 is the answer.
Two triangles have altitudes of equal length. if the areas of these triangles have a ratio of 3:4 then the bases of the triangles have the ration of what?
show work pleaseeee
Final answer:
The bases of the triangles have a ratio of 3:4.
Explanation:
The areas of two triangles with equal altitudes have a ratio of 3:4. We can set up the equation:
A₁/A₂ = 3/4
Let's denote the bases of the triangles as b₁ and b₂. The formula for the area of a triangle is A = (1/2) * base * height. Since the altitudes are equal, we can write:
A₁ = (1/2) * b₁ * h
A₂ = (1/2) * b₂ * h
Substituting these equations into the ratio, we get:
(1/2) * b₁ * h / (1/2) * b₂ * h = 3/4
Cancelling out the height and simplifying, we find:
b₁ / b₂ = 3/4
Therefore, the bases of the triangles have a ratio of 3:4.
Arrange the angles in increasing order of their cosines.
3pie/4
pie
7pie/6
5pie/3
7pie/4
4pie/3
3pie/2
2pie
Answer:
[tex]\pi,\ \dfrac{7\pi}{6},\ \dfrac{3\pi}{4},\ \dfrac{4\pi}{3},\ \dfrac{3\pi}{2},\ \dfrac{5\pi}{3},\ \dfrac{7\pi}{4},\ 2\pi.[/tex]
Step-by-step explanation:
Convert each angle in degree measure:
[tex]\dfrac{3\pi}{4}=135^{\circ},\\ \\\pi=180^{\circ},\\ \\\dfrac{7\pi}{6}=210^{\circ},\\ \\\dfrac{5\pi}{3}=300^{\circ},\\ \\\dfrac{7\pi}{4}=315^{\circ},\\ \\\dfrac{4\pi}{3}=240^{\circ},\\ \\\dfrac{3\pi}{2}=270^{\circ},\\ \\2\pi=360^{\circ}.[/tex]
Then
[tex]\cos \dfrac{3\pi}{4}=\cos 135^{\circ}=-\dfrac{\sqrt{2}}{2},\\ \\\cos \pi=\cos 180^{\circ}=-1,\\ \\\cos \dfrac{7\pi}{6}=\cos 210^{\circ}=-\dfrac{\sqrt{3}}{2},\\ \\\cos \dfrac{5\pi}{3}=\cos 300^{\circ}=\dfrac{1}{2},\\ \\\cos \dfrac{7\pi}{4}=\cos 315^{\circ}=\dfrac{\sqrt{2}}{2},\\ \\\cos \dfrac{4\pi}{3}=\cos 240^{\circ}=-\dfrac{1}{2},\\ \\\cos \dfrac{3\pi}{2}=\cos 270^{\circ}=0,\\ \\\cos 2\pi=\cos 360^{\circ}=1.[/tex]
Therefore, the angles in increasing order of their cosines are
[tex]\pi,\ \dfrac{7\pi}{6},\ \dfrac{3\pi}{4},\ \dfrac{4\pi}{3},\ \dfrac{3\pi}{2},\ \dfrac{5\pi}{3},\ \dfrac{7\pi}{4},\ 2\pi.[/tex]
Answer:
Step-by-step explanation: