Answer:
$206.4
Step-by-step explanation:
8.6*24=206.4
5.) Juan answered
questions correctly on his quiz.
What percent of the questions did he get correct?
Answer:
Step-by-step explanation:
Depends on how many problems his quiz contains and how many problems he answered correctly.
Which equation represents a circle with the same center as the circle shown but with a radius of 2 units
Answer:
Option B.
Step-by-step explanation:
Consider the below figure attached with this question.
From the below figure it is clear that the center of the given circle is (4,5).
The standard form of a circle is
[tex](x-h)^2+(y-k)^2=r^2[/tex]
where, (h,k) is center of the circle and r is radius.
We need to find the equation of a circle which represents the same center as the circle shown but with a radius of 2 units.
Substitute h=4, k=5 and r=2 in the above equation.
[tex](x-4)^2+(y-5)^2=(2)^2[/tex]
[tex](x-4)^2+(y-5)^2=4[/tex]
The required equation is [tex](x-4)^2+(y-5)^2=4[/tex].
Therefore, the correct option is B.
Answer:
B. (x – 4)2 + (y – 5)2 = 4
Step-by-step explanation:
3x-4y>12
which order pair (x,y) satisfies the inequality?
For this case we have the following inequality:
[tex]3x-4y> 12[/tex]
We must find an ordered pair of the form [tex](x, y)[/tex] that meets the inequality.
Example:
Pair 1: [tex](x, y) :( 0,0)[/tex]
[tex]3 (0) -4 (0)> 12\\0> 12[/tex]
This pair does not satisfy the inequality.
Pair 2: [tex](x, y) :( 6,1)[/tex]
[tex]3 (6) -4 (1)> 12\\18-4> 12\\14> 12[/tex]
This pair satisfies the inequality!
Thus, the pair[tex](x, y) :( 6,1)[/tex] meets the inequality.
Answer:
[tex](x, y) :( 6,1)[/tex]
If you know it, get the brainliest answer.
Answer:
[tex]2x^4+4x^2-3[/tex]
12 times what equals 250?
Answer:
[tex]20.83[/tex]
Step-by-step explanation:
[tex]12 \times x = 250 \\ 12x = 250 \\ \frac{12x}{12} = \frac{250}{12} \\ x = 20.83[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
The equivalent value of the equation is A = 12 x 20.833 = 250
Given data ,
Let the equation be represented as A
Now , the value of A is
Let the first number be p
Let the second number be q
Now , A = pq
when the value of p = 12
And , when the value of q
On simplifying the equation , we get
250 = 12 x q
So , the left hand side of the equation is equated to the right hand side by the value of 12 x q
250 = 12 x q
Divide by 12 on both sides , we get
q = 250/12
On simplifying , we get
q = 20.833
Therefore , the value of q = 20.833
Hence , the expression is A = 12 x 20.833 = 250
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15pts
f(x)=(x+6)/2
g(x)=2x - 6
Show your work to evaluate g(f(x)).
Answer:
g(f(x)) = -x - 18
Step-by-step explanation:
2x - 6( (x + 6) / (2) )
2x - 3( x + 6)
2x - 3x - 18
-x - 18
Find the ratio a:b, if it is given that ...
5a+3b=6b
the ratio a:b is 3/5.
Explanation:To find the ratio a:b in the equation 5a + 3b = 6b, we need to isolate a and b. We start by subtracting 3b from both sides of the equation:
5a + 3b - 3b = 6b - 3b
This simplifies to:
5a = 3b
Next, we can divide both sides of the equation by 3 to solve for a in terms of b:
5a/3 = 3b/3
This simplifies to:
a = (3/5)b
Therefore, the ratio a:b is 3/5.
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The ratio of a to b is 3:5.
To find the ratio a:b from the equation 5a+3b=6b, we can simplify the equation and then express one variable in terms of the other.
Starting with the given equation:
5a+3b=6b
Subtract 3b from both sides of the equation:
5a=3b
Now, divide both sides by 5 to isolate a:
So, the ratio of a to b is 3:5.
(-5x²-9x-6)+(6x²+10)
Answer:
x^2-9x+4
Step-by-step explanation:
(-5x^2-9x-6)+(6x^2+10)
-5x^2+6x^2-9x-6+10
x^2-9x+4
Answer:
x^2 - 9x + 4.
Step-by-step explanation:
(-5x²-9x-6)+(6x²+10)
= -5x² - 9x - 6 + 6x² + 10
= -5x² + 6x² - 9x - 6 + 10
= x^2 - 9x + 4.
3 plus the quotient of a number and 2 is 7. What is the number?
Omg plz help me !!! And tell me all the angle measurements (offering 15 points ) :) oh and plz provide an explanation if u can
Answer:
m∠MKL = 10°
Step-by-step explanation:
Given:
Two angles are given:
m∠JIM = 120°
m∠ILK = 50°
The given angles are angle of triangle ΔIJK.
We know that the sum of the all angles of the triangle is 180°
So, m∠JIK + m∠ILK + m∠JKL = 180°
m∠JIM + m∠ILK + m∠JKL = 180° (m∠JIK = m∠JIM)
Angle m∠JIM and angle m∠ILK is given, so we put the value of angles in above equation.
120° + 50° + m∠JKL = 180°
170° + m∠JKL = 180°
m∠JKL = 180° - 170°
m∠JKL = 10°
Since the longer diagonal bisects the interior angle of the kite therefore the m∠JKL = m∠MKL.
Therefore the m∠MKL = 10°.
Find the slope of the line through (-3,2) and (5,4). Describe every step in the process.
｡☆✼★ ━━━━━━━━━━━━━━ ☾
slope = difference in y/difference in x
Substitute the values in:
slope = (4-2)/(5--3)
Simplify:
2/8
Simplify to give the answer:
slope = 1/4
Have A Nice Day ❤
Stay Brainly! ヅ
- Ally ✧
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Answer:
Step-by-step explanation:
(-3,2) ; (5,4)
Slope m = y₂ - y₁ / x₂ - x₁
m = 4 - 2 / 5 - (-3)
= 2 / 5+3
= 2/8
=1/4
one month Miguel rented 5 movies and 3 video games for a total of $27. The next month he ordered 2 movies and 6 video games for a total of $36. Find the total of each movie and each video game.
Answer:
The price of each movie is $2.25
The price of each video games is $5.41
Step-by-step explanation:
Given as :
Miguel rented 5 movies and 3 video games for a total cost = $27
Next day Miguel rented 2 movies and 6 video games for a total cost = $36
Let The cost of each movie = $m
And The cost of each video game = $v
Now, According to question
5 m + 3 v = 27 .....1
2 m + 6 v = 36 ...........2
Now, solving the equation
2 × (5 m + 3 v) - (2 m + 6 v) = 2 × 27 - 36
Or, 10 m + 6 v - 2 m - 6 v = 54 - 36
Or, (10 m - 2 m) + (6 v - 6 v) = 18
Or, 8 m + 0 = 18
∴ m = [tex]\dfrac{18}{8}[/tex] = [tex]\dfrac{9}{4}[/tex]
i.e m = $2.25
So, The price of each movie = m = $2.25
Again, put the value of m into eq 2
So, 2 × 2.25 + 6 v = 36
Or, 4.5 + 6 v = 36
Or, 6 v = 36 - 4.5
Or, 6 v = $32.5
∴ v = [tex]\dfrac{32.5}{6}[/tex]
i.e v = $5.41
So, The price of each video games = v = $5.41
Hence, The price of each movie is $2.25 and
The price of each video games is $5.41 Answer
HELP ASAP 15 points
Select the equation of the line that passes through the point (–2, –1) and has slope 5 in point-slope form. a (y + 1) = 5(x + 2) b (x + 2) = 5(y – 1) c (y – 1) = 5(x – 2) d (x – 2) = 5(y + 1)
Answer:
y+1=5(x+2)
Step-by-step explanation:
y-y1=m(x-x1)
y-(-1)=5(x-(-2))
y+1=5(x+2)
In Charlie's Family two people have blue eyes and three people have brown eyes. Write a decimal number to represent the part of the family that has blue eyes. A. 0.4 B. 0.6 C. 0.04 D. 0.06
The part of Charlie's family with blue eyes is represented by the decimal 0.4, calculated by dividing the number of people with blue eyes (2) by the total number of family members (5).
To represent the part of Charlie's family that has blue eyes using a decimal, we need to divide the number of people with blue eyes by the total number of people in the family.
There are two people with blue eyes and three with brown eyes, making a total of five people in the family.
Therefore, the fraction of the family that has blue eyes is
[tex]\frac{2}{5} = 0.4[/tex]
The decimal form of 2/5 is 0.4. So, the answer is A. 0.4.
APPLICATIONS
3. Maria charges $15 for every 2 hours that she babysits. Answer the following questions based on this
information.
901
(a) How much would Maria charge for working for 5 hours? 80
758
Amount Charged, a
(b) Fill out the table below for the amount that Maria
makes as she babysits and graph the relationship on the
grid provided.
Hours Worked, h
8
10
12
-
4
1012
10
Amount, a, in $
15
6 8
Hours Worked, h
c) Write an equation for the amount
that Maria makes as a function of the number of hours, h, that she
In 5 hours Maria will charge $37.5
The complete table
x y
2 15
4 30
6 45
8 60
10 75
12 90
The equation is Charge (y) = time (x) * 15/2
How to find the amount
If Maria charges $15 for every 2 hours that she babysits. In 5 hours her charge will be
= 5 * 15 / 2
= $37.5
For x = 4, y = 4 * 15/2 = $30
For x = 6, y = 6 * 15/2 = $45
For x = 8, y = 8 * 15/2 = $60
For x = 10, y = 10 * 15/2 = $75
For x = 12, y = 12 * 15/2 = $90
The equation is found to be
Charge (y) = time (x) * 15/2
Please help I really need your help
Answer:
1. [tex]1200 \ kg/m^3[/tex]
2.
a)
35 cm = 0.35 meters
11 dm = 1.1 meters
15 mm = 0.015 meters
b)
Volume = 0.005775 cubic meters
Mass = 15.5925 kilograms
Step-by-step explanation:
1.
We know
Density = Mass/Volume
Given
Mass = 90 kg
Volume = 0.075 cubic meters
The SI unit for density is kilograms per cubic meters. Our dimensions are just that, so we just need to plug in the numbers into the formula and get our answer. Shown below:
Density = [tex]\frac{90}{0.075}=1200 \ kg/m^3[/tex]
The Density of asphalt block = [tex]1200 \ kg/m^3[/tex]
2.
a)
We need to express 35cm, 11dm, and 15mm in meters
We know
100 cm = 1 meters, so
35 cm = 35/100 = 0.35 meters
We know 1 dm = 0.1 meters, so
11 dm * 0.1 = 1.1 meters
We know, 1mm = 0.001 meters, so
15 mm * 0.001 = 0.015 meters
b)
Volume of the Slab is length * width * height, in meters, that would be:
Volume = 0.35 * 1.1 * 0.015 = 0.005775 cubic meters
THe mass would be found by the formula:
Density = Mass/Volume
2700 = Mass/0.005775
Mass = 0.005775 * 2700 = 15.5925 kilograms
Help please i’m stuck
Answer:
108 full loads
Step-by-step explanation:
Each load uses up 1 1/3 scoops and total there is 145 scoops. So, how many loads of laundry can be washed??
We divide total scoops by number of scoops in each load of laundry. But before we do that, we need to convert the mixed fraction to improper fraction by using the rule shown below:
[tex]a\frac{b}{c}=\frac{(a*c)+b}{c}[/tex]
hence:
[tex]1\frac{1}{3}=\frac{4}{3}[/tex]
Now the division problem:
[tex]\frac{145}{\frac{4}{3}}=145*\frac{3}{4}=108.75[/tex]
So, a whole lot of 108 load of laundry can be washed.
In 1 minute alex can type 44 words at the same rate how long would it take him to type 176 words
Final answer:
It will take Alex 4 minutes to type 176 words at his current typing speed of 44 words per minute.
Explanation:
The question asks how long it would take for Alex to type 176 words if he can type 44 words in one minute. To find the answer, we utilize a simple rate calculation by dividing the total number of words (176) by Alex's typing speed (44 words per minute).
176 words ÷ 44 words/minute = 4 minutes
Therefore, it will take Alex exactly 4 minutes to type 176 words at the rate of 44 words per minute.
A students grade goes from a 95 to a 60 in 3 weeks. Calculate the students rate of grade change.
Answer: The rate of change is 11.6666...
Step-by-step explanation:
You subtract 95 by 60 and you get 35.
You divide it by 3 because it happened over 3 weeks.
After dividing your answer is 11.6666...
To calculate the rate of grade change, subtract the final grade from the initial grade, then divide the result by the number of weeks. In this case, the rate of grade change is 11.67, meaning the grades are dropping at a rate of 11.67 points per week.
Explanation:To calculate the rate of grade change, we should subtract the final grade from the initial grade and divide the result by the number of weeks. In this case, the initial grade is 95 and the final grade is 60. Therefore, the grade change is 95 - 60 = 35. The number of weeks is 3 according to your question.
So, the rate of grade change can be calculated as follows:
Rate of Grade Change = Grade Change / Number of weeks
Substituting the given values:
Rate of Change = 35 / 3 = 11.67
This means, grades are dropping at a rate of 11.67 points per week.
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An alloy composed of nickel, zinc, and copper in a 4:1:2 ratio. How many kilograms of each metal are needed to make 35 kg of this alloy?
The required amount of nickel is
kg .
The required amount of zink is
kg .
The required amount of copper is
kg .
Step-by-step explanation:
The total number of parts is 4 + 1 + 2 = 7.
Nickel is 4/7 of the mass: 4/7 × 35 kg = 20 kg.
Zinc is 1/7 of the mass: 1/7 × 35 kg = 5 kg.
Copper is 2/7 of the mass: 2/7 × 35 = 10 kg.
Answer:
15g 5g 10g
Step-by-step explanation:
Harper's hair is 15 inches long. She gets
it cut. Now it is 8 inches long. How many
inches did she get cut off her hair?
Answer:
7 inches.
Step-by-step explanation:
15 inches - 8 inches = 7 inches.
Answer : The length of hair she get cut off her hair is, 7 inches
Step-by-step explanation :
As we are given that the length of Harper's hair is 15 inches. After cutting hair, the length of Harper's hair is 8 inches.
Now we have to determine the length of hair she get cut off her hair.
Length of hair she get cut off her hair = Total length of hair - Length of hair after cutting
Length of hair she get cut off her hair = 15 inches - 8 inches
Length of hair she get cut off her hair = 7 inches
Thus, the length of hair she get cut off her hair is, 7 inches
Can someone answer this please
Answer:
0 hours = $40
1 hours = $75
2 hours =$110
3 hours =$145
4 hours =$180
5 hours =$215
Step-by-step explanation:
C=Cost in dollars,
n=hours.
Calculating Cost for 0 hours
[tex]C=35n+40[/tex]
[tex]C=(35\times 0)+40[/tex]
[tex]C=0+40[/tex]
[tex]C=40[/tex]
Cost for 0 hours=$40
Calculating Cost for 1 hours
[tex]C=35n+40[/tex]
[tex]C=(35\times 1)+40[/tex]
[tex]C=35+40[/tex]
[tex]C=75[/tex]
Cost for 1 hours=$75
Calculating Cost for 2 hours
[tex]C=35n+40[/tex]
[tex]C=(35\times 2)+40[/tex]
[tex]C=70+40[/tex]
[tex]C=110[/tex]
Cost for 2 hours=$110
Calculating Cost for 3 hours
[tex]C=35n+40[/tex]
[tex]C=(35\times 3)+40[/tex]
[tex]C=105+40[/tex]
[tex]C=145[/tex]
Cost for 3 hours=$145
Calculating Cost for 4 hours
[tex]C=35n+40[/tex]
[tex]C=(35\times 4)+40[/tex]
[tex]C=140+40[/tex]
[tex]C=180[/tex]
Cost for 4 hours=$180
Calculating Cost for 5 hours
[tex]C=35n+40[/tex]
[tex]C=(35\times 5)+40[/tex]
[tex]C=175+40[/tex]
[tex]C=215[/tex]
Cost for 5 hours=$215
what is the solution to 2/3 x + 5 =1
Answer:
x = -6
Step-by-step explanation:
The solution means to solve for x. To solve for "x", isolate the variable. This means to separate it from everything else. Do this using reverse operations in reverse BEDMAS order.
2/3 x + 5 = 1
2/3 x + 5 - 5 = 1 - 5 Subtract 5 from both sides
2/3 x = -4
(2/3 x) / (2/3) = (-4) / (2/3) Divide both sides by 2/3
x = (-4) / (2/3)
x = -6 Solution
Answer:
-6
Step-by-step explanation:
A Chemist needs to mix a 20% acid solution with a 50% acid solution to obtain 15 liters of a 34% acid solution. How many liters of each acid solution must be used?
Please explain well!!
Answer:
8 Liters of 20% acid and 7 Liters of 50% acid
Step-by-step explanation:
Let we mix "x" liters of 20% acid, and
"y" liters of 50% acid
Total is 15 liters, so we can write:
x + y = 15
or x = 15 - y
Then,
We mix x liters of 20% (20/100=0.2) and y liters of 50% (50/100=0.5) acid solution to make 15 liters of 34% (34/100=0.34) solution, we can write:
0.2x + 0.5y = 0.34(15)
This becomes:
[tex]0.2x + 0.5y = 5.1[/tex]
We replace x with what we got in 1st equation and solve for y:
[tex]0.2x + 0.5y = 5.1\\0.2(15-y) + 0.5y = 5.1\\3-0.2y+0.5y=5.1\\0.3y=5.1-3\\0.3y=2.1\\y=\frac{2.1}{0.3}\\y=7[/tex]
We know x = 15 - y, so
x = 15 - 7
x = 8
So, we use 8 Liters of 20% acid and 7 Liters of 50% acid
Final answer:
To find out how many liters of each acid solution (20% and 50%) a chemist needs to mix to get 15 liters of a 34% acid solution, a system of equations using the volumes and concentrations is set up and solved to determine the exact volumes needed.
Explanation:
To solve the problem of mixing a 20% acid solution with a 50% acid solution to get 15 liters of a 34% acid solution, we can set up a system of equations based on the volumes and concentrations. Let's define x as the number of liters of the 20% solution and y as the number of liters of the 50% solution. The first equation is based on the total volume: x + y = 15. The second equation is based on the total amount of pure acid: 0.20x + 0.50y = 0.34 × 15. Solving this system gives us the volumes needed for each solution.
Steps to Solve the System of Equations:
Write the two equations:
x + y = 15 (the volume equation)
0.20x + 0.50y = 5.1 (the acid equation, since 0.34 × 15 = 5.1)
Solve one of the equations for x or y. For instance:
x = 15 - y
Substitute into the second equation and solve for y:
0.20(15 - y) + 0.50y = 5.1
Solve for y, which represents the volume of the 50% solution:
Substitute the value of y back into any of the original equations to solve for x, which represents the volume of the 20% solution:
By following these steps, the chemist can determine precisely how many liters of each acid solution must be used to obtain the final mixture.
3 - 0.3y = 5.1
y = 7 liters
x = 8 liters
How to solve 2x= -x + 3 by graphing
Answer:
x = 1
Step-by-step explanation:
To find a solution to this by graphing, you would typically make a graph of the expression on the left, and another graph of the expression on the right. Where they intersect is the solution.
You would graph ...
y = 2xy = -x +3You're only interested in the x-value where these lines cross, x=1.
_____
Alternate method
Graph the difference of the left side and the right side:
y = (2x) -(-x +3)
and look for the value of x that makes y = 0. This, too, gives the solution x=1.
__
Of course, once you have the equation ...
0 = 3x -3
the solution is pretty obvious. (Divide by 3 to make it more obvious.)
Quadrilateral QRST has diagonals that are perpendicular but not congruent. Which type of quadrilateral could describe quadrilateral QRST?
A. Square
B. Rhombus
C. Isosceles trapezoid
D. Rectangle
The quadrilateral has diagonals that are perpendicular but not congruent is called a rhombus. Then the correct option is B.
What is a quadrilateral?It is a type of polygon that has four sides.
Types of quadrilateral;
Square - It has all four sides equal to each other. And diagonal are also equal.Rhombus - It has all four sides equal to each other. And diagonal are not equal but intersect at a right angle.Isosceles trapezoid - It has a pair of sides that is parallel and diagonal is not equal to each other.Rectangle - It has opposite sides parallel and diagonal are equal.Thus, the correct option is B.
More about the quadrilateral link is given below.
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if 15 cot A = 8, then find the value of cosec A
Answer:
cosec A = [tex]\frac{17}{15}[/tex]
Step-by-step explanation:
We have,
15 cot A = 8
[tex]\implies cotA = \frac{8}{15}[/tex]
We know that,
cosec²A - cot²A = 1
⇒cosec²A = 1 + cot²A
Taking square root both sides, we get
[tex]\sqrt{cosec^2A} = \sqrt{1+cot^2A[/tex]
[tex]\implies cosec A = \sqrt{1+cot^2A}[/tex]
[tex]\implies cosec A = \sqrt{1+(\frac{8}{15})^2}[/tex]
[tex]\implies cosec A=\sqrt{1+\frac{64}{225}}=\sqrt{\frac{289}{225}}=\frac{17}{15}[/tex]
So, the value of cosec A is [tex]\frac{17}{15}[/tex].
A chess player won 48 of the games he played. If the ratio of wins to loses was 8:7, how many games did he play total?
Answer:
the answer would be 90
Step-by-step explanation:
first you multiply 8 until you get 48, which would be 6 times, then do the same thing for 7 (7x6), which would be 42 and just add it all together and you get 90
The chess player played a total of 56 games.
Explanation:To find the total number of games the chess player played, we need to determine the ratio of wins and losses. The ratio of wins to losses is given as 8:7. This means for every 8 wins, there are 7 losses. Since the player won a total of 48 games, we can set up the following proportion:
8/7 = 48/x
Cross-multiplying, we get 8x = 7 * 48. Solving for x, we find that the player played a total of 56 games.
A 2x2 square is centered on the origin. It is dilated by a factor of 3. What are the coordinated of the vertices of the square? What is the ratio of the areas from the larger square to the smaller square?
Answer:
The vertices are:
A' = (-3, -3)
B' = (3, -3)
C' = (3, 3)
D' = (-3, 3)
The ratio of area of larger square to smaller square is 9:1
Step-by-step explanation:
Given:
A 2 x 2 square is centered at the origin.
So, the center of the square is (0, 0)
Since it is 2 x 2 square, the side of the square is 2 units.
So, the vertices of the 2 x 2 square are A (-1, -1), B(1, -1), C(1. 1), D(-1, 1)
The above square is dilated by a factor of 3.
Let's name the dilated square A'B'C'D'
To find the coordinates of the vertices of dilated square, we need to multiply each vertices of ABCD by 3.
A(-1, -1) = 3(-1, -1) = A'(-3, -3)
B(1, -1) = 3(1, -1) = B'(3, -3)
C(1, 1) = 3(1, 1) = C'(3, 3)
D(-1, 1) = 3(-1, 1) = D'(-3, 3)
To find the area of the small square
the side of the small square is 2 units
so the are of the small square is [tex]2^2[/tex] = 4 square units
To find the area of the larger square
lets find the side AB of the square using distance formula
=>[tex]\sqrt{(x_2 -x_1)^2 +(y_2-y_1)^2}[/tex]
=>[tex]\sqrt{(3 - (-3))^2 +(-3 - (-3))^2}[/tex]
=>[tex]\sqrt{(3 +3)^2 +(-3 +3)^2}[/tex]
=>[tex]\sqrt{(6)^2 +(0)^2}[/tex]
=>[tex]\sqrt{36}[/tex]
=>6
AB =6 units
In a square all the sides will be equal
Now the area of the larger square will be
[tex]6^2[/tex]
36 square units
The ratio of larger square to smaller square is
=>36 : 4
=>9 : 1
Find the distance between points P(9,6) and Q(3,2) to the nearest tenth
Answer:
[tex]\large \boxed{7.2}[/tex]
Step-by-step explanation:
You could use the distance formula to calculate the length of PQ. I prefer a visual approach, because it requires less memorization.
Draw a vertical line from P and a horizontal line from Q until they intersect at R (9, 2).
Then you have a right triangle PQR, and you can use Pythagoras' theorem to calculate PQ.
[tex]\begin{array}{rcl}PQ^{2} & = & PR^{2} + QR^{2}\\& = & 4^{2} + 6^{2}\\ & = & 16 + 36\\& = & 52\\PQ& = & \sqrt{52}\\& = & \mathbf{7.2}\\\end{array}\\\text{The distance between P and Q is } $\large \boxed{\mathbf{7.2}}$}[/tex]