Answer:
-720
Step-by-step explanation:
2910 is obviously bigger than 2190 so your answer will result in a negative so what you could do is 2910-2190 which is 720 and add a negative in front of it.
Lee is making cookies. she needs 3/4 cup white sugar and 1 2/4 cups brown sugar for each batch. she makes 2 batches. how many total cups of brown and white sugar does she need
The total amount of brown and white sugar that Lee needs is 4 1/2 cups of sugar
What is a fraction?
A fraction is written in the form of a numerator and a denominator where the denominator is greater than the numerator.
We have two types of fractions.
Proper fraction and improper fraction.
A proper fraction is a fraction whose numerator is less than the denominator.
An improper fraction is a fraction where the numerator is greater than the denominator.
Example:
1/2, 1/3 is a fraction.
3/6, 99/999 is a fraction.
1/4 is a fraction.
We have,
Lee needs 3/4 cup of white sugar for each batch of cookies, and she is making 2 batches, so she needs:
= 3/4 cup/batch x 2 batches
= 6/4 = 3/2 cups of white sugar
Lee needs 1 2/4 cups of brown sugar for each batch of cookies, and she is making 2 batches, so she needs:
= 1(2/4) cups/batch x 2 batches
= 3 cups of brown sugar
Therefore,
The total amount of brown and white sugar that Lee needs is:
= 3/2 cups of white sugar + 3 cups of brown sugar
= 4 1/2 cups of sugar
Thus,
The total amount of brown and white sugar that Lee needs is 4 1/2 cups of sugar
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Drea and Sajini both worked at a local ice cream shop over the summer. Together, they earned a total of $425. Drea earned $25 more than Sajini. Write a system of two equations with two variables to model this problem. Use an algebraic method (substitution or linear combination) to solve the system. Graph both equations. Be sure to include the solution on your graph. How much did each person earn?
ps i can graph it myself i guess i just need the rest
Answer:
Sajini = 200
Drea = 225
Step-by-step explanation:
d = amount Drea earned
s = amount Sajini earned
Together they earned 425
d+s =425
d = s+25
The system of equations
d+s =425
d = s+25
I will use substitution to solve
Substitute d= s+25 into the first equation
d+s =425
(s+25) + s = 425
Combine like terms
2s+25 =425
Subtract 25 from each side
2s+25-25 =425-25
2s = 400
Divide by 2
2s/2 =400/2
s =200
Sajini = 200
Now we need to find d
d = s+25
d = 200 + 25
d = 225
Drea = 225
Answer:
Drea: $225
Sajini: $200
Step-by-step explanation:
D + S = 425
D = S + 25
S + 25 + S = 425
2S = 400
S = 200
D = 200 + 25 = 225
Solve the equation for x. 3/ 5 (5x + 10) = −24
Solve the equation for x.
A) −8
B) −10
C) −15
D) −18
Answer:
B
Step-by-step explanation:
−10
3 /5 (5x + 10) = −24
3x + 6 = −24
3x = −30
x = −10
Which function has an asymptote at x= 39
Answer:
option B : [tex]f(x)= log_7(x-39)[/tex]
Step-by-step explanation:
(a) [tex]f(x) = 7^{x-39}[/tex]
For exponential function , there is no vertical asymptotes
General form of exponential function is
[tex]f(x) = n^{ax-b}+k[/tex]
[tex]f(x) = 7^{x-39}[/tex]
In the given f(x) the value of k =0
So horizontal asymptote is y=0
(b) lets check with option
[tex]f(x)= log_7(x-39)[/tex]
To find vertical asymptote we set the argument of log =0 and solve for x
Argument of log is x-39
x-39=0 so x=39
Hence vertical asymptote at x=39
Answer:
The correct answer is b. f(x) = log7(x-39)
solve the system of equations. -5x + 8y =0
Answer:
Step-by-step explanation:
helloooooo heres the answer...X=8/5
you get this by moving your Y variable to the left by adding its opposite (-8y) to both sides.
then you should be left with -5x=-8y when in this step divide both steps by -5, which will get you 8/5 hence the answer X=8/5
A cell phone company collected data if texting speed in words per minute according to time in minutes. explain why a scatter plot is used to represent the data, including the purpose of scatter plots
Answer:
Scatter plots resembles line graphs in that they are plotted on the x and y axis. The are used because they show how much one variable is affected by another.
Scatter diagrams are important since in statistics they can show the extent of correlation, if any, between the values of observed quantities or a behavior.
Answer:
A scatter plot is defined as a diagram which uses Cartesian coordinates to display values about two variables, one indepedent, the other one dependent.
This diagrams are used in statistics to display information about surveys to a certain sample in a population. The purpose of a scatter plot is to shows if the variables are related, that is, if they have any type of linear correlation between them. If they have linear correlation, then the data is represented by a line.
Now, in this case, the independent variable is time in minutes and the dependent variable is texting. Basically, with this data, the company will be able to stablish the relation between words written in a certain time, that is, the speed of texting actually.
With a scatter plot, they would find the relation that forms the speed of texting. It could be "the more time, more text is written", or "the less time, more text is written".
If we need to establish a possible relation, the most logical would be "the more time, more word are texted".
Evaluate (precalculus)
Answer:
S∞ = 7 Option C
Step-by-step explanation:
Given that:
∑21[tex](\frac{1}{4} )^{i}[/tex] i = 1 to ∞
We need to find the sum.
Firstly we will find the sequence
a₁ = [tex]21(\frac{1}{4} )^{1} = (\frac{21}{4} )[/tex]
a₂ = [tex]21(\frac{1}{4} )^{2} = (\frac{21}{16} )[/tex]
a₃ = [tex]21(\frac{1}{4} )^{3} = (\frac{21}{64} )[/tex]
a₄ = [tex]21(\frac{1}{4} )^{4} = (\frac{21}{256} )[/tex]
this sequence is geometric
So, we use sum of infinite terms
a = [tex]\frac{21}{4}[/tex]
r = [tex]\frac{\frac{21}{16} }{\frac{21}{4} } = \frac{1}{4}[/tex]
The sum of infinite terms of a GP series
S∞ = [tex]\frac{a}{1-r}[/tex]
where a is first term
r is common ratio and 0<r<1
S∞ = [tex]\frac{\frac{21}{4} }{1 - \frac{1}{4} } = \frac{\frac{21}{4} }{\frac{3}{4} }[/tex]
S∞ = 7
Which line is parallel to y=3/4x-3
Final answer:
A line is parallel to y=3/4x-3 if it has the same slope of 3/4.
Explanation:
A line is parallel to y = \frac{3}{4}x - 3 if it has the same slope as the given line.
The slope of y = \frac{3}{4}x - 3 is \frac{3}{4}. So, any line with a slope of \frac{3}{4} is parallel to it.
For example, a line with the equation y = \frac{3}{4}x + 2 is parallel to y = \frac{3}{4}x - 3 because they both have the same slope, \frac{3}{4}.
You have 4 cups of raisins. A recipe calls for 3/8 cup of raisins per serving. How many full servings can you make
Answer:
10 servings
Step-by-step explanation:
not very hard at all, all you have to do is do 4/(3/8) to get you 10.66, but since you need full servings, you leave out the decimal (logic) to get the answer
You can make 10 full servings of the recipe with 4 cups of raisins and have some leftover.
To determine how many full servings you can make with 4 cups of raisins when a recipe calls for 3/8 cup of raisins per serving, you can set up a division problem.
Divide the total amount of raisins, which is 4 cups, by the amount of raisins per serving, which is 3/8 cup.
You can convert 3/8 to a decimal by dividing the numerator (3) by the denominator (8).
This gives you 0.375.
Then, divide 4 by 0.375 to find the number of full servings.
The result is 10.67, which means you can make 10 full servings and have a little bit of raisins leftover.
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You have 4 cups of raisins. A recipe calls for 3/8 cup of raisins per serving. How many full servings can you make?
write the equation in slope intercept form what are the slope and y intercept? -12+11y=-8
To write the equation in slope-intercept form, rearrange the equation to isolate the y variable. Then, divide both sides by the coefficient of y to solve for y. The equation is y = 4/11, with a slope of 0 and y-intercept of 4/11.
Explanation:To write the equation in slope-intercept form, we need to isolate the y variable on one side of the equation.
Start by rearranging the equation to get the y variable alone:
-12 + 11y = -8
Next, add 12 to both sides to move the constant term to the other side:
11y = 4
Then, divide both sides by 11 to solve for y:
y = 4/11
The equation in slope-intercept form is y = 4/11. The slope is 0 and the y-intercept is 4/11.
Final answer:
The equation -12 + 11y = -8 in slope-intercept form is y = 4/11. There's no x term in the equation, indicating that the slope is 0, and the y-intercept is 4/11.
Explanation:
To write the equation -12 + 11y = -8 in slope-intercept form, we start by isolating the y-variable on one side of the equation. Here's how you can do it:
Add 12 to both sides of the equation to get 11y = 4.
Divide both sides of the equation by 11 to solve for y, resulting in y = 4/11.
The equation in slope-intercept form is y = 4/11. In this form, y = a + bx, the slope (b) is the coefficient of x, and the y-intercept (a) is the constant term. Since our equation has no x term, the slope is 0 and the y-intercept is 4/11.
Therefore, the slope of the line is 0, and the y-intercept is the point (0, 4/11).
Consider the given recursive function of an arithmetic sequence.
F(1)=4
F(n)=f(n-1) +7, for n=2,3,4.....
What is the 8th term of the sequence?
A. 60
B. 53
C. 46
D. 67
Method 1:
[tex]F(1)=4\\\\F(n)=F(n-1)+7\\\\n\in\{2,\ 3,\ 4,\ 5,\ ...\}\\\\F(2)=F(1)+7\to F(2)=4+7=11\\\\F(3)=F(2)+7\to F(3)=11+7=18\\\\F(4)=F(3)+7\to F(4)=18+7=25\\\\F(5)=F(4)+7\to F(5)=25+7=32\\\\F(6)=F(5)+7\to F(6)=32+7=39\\\\F(7)=F(6)+7\to F(7)=39+7=46\\\\F(8)=F(7)+7\to F(8)=46+7=53[/tex]
Answer: B. 53Method 2:
The general formula of an arithmetic sequence:
[tex]a_n=a_1+(n-1)d[/tex]
We have:
[tex]a_1=F(1)=4,\ d=7[/tex]
Substitute:
[tex]a_n=4+(n-1)(7)=4+7n-7=7n-3[/tex]
Put n = 8 to the formula:
[tex]a_8=7(8)-3=56-3=53[/tex]
Answer: B. 53What is the distance from the point (4, -5) to the origin (0, 0)? Round your answer to the nearest tenth.
Answer:
6.7
Step-by-step explanation:
Answer:
6.4 is the correct answer.
Step-by-step explanation:
Raul used this method to find tje sum 229+313
Answer:
possible answrs addition, expanded form
Step-by-step explanation:
What is the equivalent expression of 8b-4
You can factor out the 4 and you would get....
[tex]4(2b-1)[/tex]
what is the sum in degrees of the measures of the interior angles of the polygon
Answer:
see explanation
Step-by-step explanation:
the sum of the interior angles of a polygon is
sum = 180° ( n - 2) ← n is the number of sides of the polygon
In the 6th grade classes there are 4 girls for every 3 boys if there are 24 girls how many boys are there?
Answer:
Step-by-step explanation: The correct answer is 18 boys.
First of all, we know that there is a ratio of 4 girls to three boys or 4:3.
Next we know that there are 24 girls so what we have to do is figure out which number 4 was multiplied by to get 24.
4 times 6 is 24 so since we know that four was multiplied by 6, we can now multiply 3 by 6 to keep the same ratio of girls to boys.
The question is about finding the number of boys in a class when the ratio of girls to boys is given and the number of girls is known. Set up a proportion and solve the equation to find that there are 18 boys in the 6th grade class.
This is a Mathematics problem on ratios. In this problem, the ratio of girls to boys is given as 4:3. This means for every 4 girls, there are 3 boys. If there are 24 girls, we can find the number of boys by setting up a proportion. Like this:
4 (girls) / 3 (boys) = 24 (girls) / x (boys)
Solve for x by cross multiplying: (4 * x) = (3 * 24) which simplifies to: 4x = 72. Solve for x by dividing both sides of the equation by 4 resulting in: x = 18. Hence, there are 18 boys in the 6th grade classes.
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rosita invested in a precious mineral. the value of the mineral tends to increase by about 12% per year. she invest 24,000 in 2014. how much will her investment be worth in 2025? round to the nearest whole dollar
2025 - 2014 = 11
11 * 12 = 132
132% of $24,000 = $31680
I think this is right but I don't sure... sorry
what type of property is 2 × (6+4) = 2 × 6 + 2×4
Answer:
Distributive Property
Step-by-step explanation:
Note that in the question, 2(6 + 4) we can solve it in two ways.
First way is to solve using PEMDAS, which is to solve the parenthesis first, and then the addition. However, this time, we see that the next step is 2(6) + 2(4), which suggests distributive property, which states that the multiplying number on the outside of the parenthesis is distributed to all terms within the parenthesis.
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Explain why all circles must be similar. That is, describe a sequence of transformations that will always carries one circle onto another.
All circles are similar because they can be transformed into each other through a series of transformations without changing their core properties. These transformations include translation (shifting the position) and scaling (resizing).
Explanation:All circles are similar because they maintain the same shape and can be scaled up or down without changing their properties. A sequence of transformations such as scaling (resizing) can carry one circle onto another. Here is how:
Identify the centres of the two circles. Let's say the centre of Circle A is at point a, and the centre of Circle B is at point b. Translate Circle A such that its centre aligns with Circle B. Translation is a transformation that shifts the position of a shape, without changing its size, shape, or orientation. If the radius of Circle A differs from Circle B, apply a scaling transform to Circle A such that its radius becomes equal to the radius of Circle B. Scaling is a process that enlarges or shrinks a shape but keeps its shape intact.
By performing these transformations, Circle A transforms into Circle B. This holds true for any two circles, thus all circles are always similar.
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is 50,48,14 a right angle
Answer: No
Step-by-step explanation:
A right angle is exactly 90°
To determine if 50, 48, 14 form a right angle, we need to check if the sum of the squares of the two smaller numbers is equal to the square of the largest number. The sum of 48^2 and 14^2 is equal to 50^2, so 50, 48, 14 form a right angle.
Explanation:To determine if 50, 48, 14 form a right angle, we need to check if the sum of the squares of the two smaller numbers is equal to the square of the largest number.
The largest number is 50. So, we need to check if 48^2 + 14^2 = 50^2.
48^2 equals 2304 and 14^2 equals 196. The sum of these two numbers is 2500, which is equal to 50^2. Therefore, 50, 48, 14 form a right angle.
At the lake, Tamara spent 75 minutes biking and 34 minutes chasing her puppy. How much longer did she spend biking than chasing her dog?
Answer:
it took tamara an 1:49 in total
the difference was 41 minutes
Step-by-step explanation:
Answer:
41 minutes
Step-by-step explanation:
75 minutes minus 34 minutes equal 41 minutes
Find the midpoint between the points A(-2,5) and B(4,-7)
Answer:
(1, - 1 )
Step-by-step explanation:
using the midpoint formula
midpoint = [ [tex]\frac{1}{2}[/tex](- 2 + 4), [tex]\frac{1}{2}[/tex](5 - 7) = (1, - 1 )
April sold 75 tickets to a school play and collected a total of $495. If adult cost $8 each and child tickets cost $5 each, how many adult and how many child tickets did she sell?
April sold 40 adult tickets and 35 child tickets.
Explanation:To find the number of adult and child tickets sold, we can set up a system of equations based on the given information:
Let x be the number of adult tickets sold and y be the number of child tickets sold.
We can establish two equations:
x + y = 75 (equation 1, representing the total number of tickets sold)8x + 5y = 495 (equation 2, representing the total amount collected)To solve this system, we can use the method of substitution or elimination. Let's use the elimination method:
By multiplying equation 1 by 5, we get:
5x + 5y = 375 (equation 3)
Subtracting equation 3 from equation 2:
(8x + 5y) - (5x + 5y) = 495 - 375
Simplifying:
3x = 120
Dividing both sides by 3:
x = 40
Substituting the value of x into equation 1:
40 + y = 75
Solving for y:
y = 75 - 40
y = 35
Therefore, April sold 40 adult tickets and 35 child tickets.
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Real estate values in a town are increasing at a rate of 9% per year.
Mr. Townsend purchased a building for $375,000 in 2010.
How much can he expect to sell the building for in 2020, assuming this trend continues?
Enter your answer in the box.
Round to the nearest whole dollar.
$
Answer:
see below PLEASE GIVE BRAINLIEST
Step-by-step explanation:
2020 -2010 = 10 YEARS
375,000 X .09 = 33,750 2011 VALUE 33750 + 375000 = 408,750
408750 X .09 = 36787.50 2012 VALUE 445537.50
445537.50 X .09 = 40,098.38 2013 VALUE 485635.88
485635.88 X .09 = 43707.23 2014 VALUE 529343.11
529343.11 X .09 = 47640.88 2015 VALUE 576983.99
576989.99 X .09 = 51928.56 2016 VALUE 628918.55
628918.55 X .09 = 56602.67 2017 VALUE 685521.22
685521.22 X .09 = 61696.91 2018 VALUE 747218.13
747218.13 X .09 = 67249.63 2019 VALUE 814467.76
814467.76 X .09 = 73,302.10 2020 VALUE $887,769.86
Rounded to the nearest dollar: $887,770.00
Write the equation of a line that is perpendicular to the given line and that passes through the given point. Y-2=-1/4(x+3); (-3,5)
A. Y= -3x - 5
B. Y=1/4x-6
C. Y=4x+17
D. Y =4x+5
Answer:
A
Step-by-step explanation:
The equation of the line perpendicular to the given line and passing through the point (-3, 5) is option C. y = 4x + 17.
What is Slope?Slope of a line is the ratio of the change in y coordinates to the change in the x coordinates of two points given.
Given the equation of a line in point slope form as,
y - 2 = -1/4 (x + 3)
We have to calculate the equation of a line perpendicular to the given line.
Slope of a line perpendicular to another line is the reciprocal of the given line with opposite sign.
Slope of the given line = -1/4
Slope of the perpendicular line = - (1 ÷ -1/4) = 4
Given a point (-3, 5).
Equation of the required line in point slope form is,
y - 5 = 4 (x - -3)
y - 5 = 4 (x + 3)
y - 5 = 4x + 12
y = 4x + 12 + 5
y = 4x + 17
Hence the equation of the required line perpendicular to the given line is y = 4x + 17.
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In a computer catalog, a computer monitor is listed as being 19 inches. This distance is the diagonal distance across the screen. If the screen measures 10 inches in height, what is the width of the screen to the nearest inch?
Answer:
Your answer is √261.
Step-by-step explanation:
Width of computer screen in inches is 16.15 inches
Given that;
Diagonal length of computer screen = 19 inches
Height of computer screen = 10 inches
Find:
Width of computer screen in inches
Computation:
Using Pythagorean theorem
Base = √Diagonal length² - Height²
Width of computer screen in inches = √19² - 10²
Width of computer screen in inches = √361 - 100
Width of computer screen in inches = √261
Width of computer screen in inches = 16.15 inches (Approx.)
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How many solutions exist for the given equation?
(x + 12) = 4x – 1
zero
one
two
infinitely many
The number of solutions exist for the given equation (x + 12) = 4x – 1
is one.
What is the solution for an equation?The solution of an equation refers usually to the values of the variables involved in that equation which if substituted in place of those variable would give a true mathematical statement.
We are given that;
The equation=(x + 12) = 4x – 1
Now,
We can simplify the given equation as follows:
x + 12 = 4x - 1
Adding 1 to both sides:
x + 13 = 4x
Subtracting x from both sides:
13 = 3x
Dividing both sides by 3:
x = 13/3
Therefore, by solving equation answer will be one.
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9^-5/9^3 single positive exponent
Answer: 9^-8
Step-by-step explanation:
To get single positive exponent,
9^-5 / 9^3
Since the exponent is same
So we can solve the coefficient like this
9^-5-3
So
9^-8
The problem 9⁻⁵ /9³ simplifies to -8 by subtracting the exponent in the denominator (3) from the exponent in the numerator (-5). To achieve a single positive exponent, take the reciprocal of the base, then the final answer becomes 1/9⁸.
Explanation:The question pertains to the laws of exponents in mathematics. To be specific, you are asked to simplify the expression 9⁻⁵ /9³ into a single positive exponent. In this case, you should remember that division of the same base translates to subtraction of exponents, according to the exponent laws. Therefore, you simply subtract the exponent of the denominator (3) from the exponent of the numerator (-5).
Following the rule, -5 - 3 results in -8. So the expression simplifies to 9^-8. But, since we need a single positive exponent, we take the reciprocal of 9. Remember that changing the sign of an exponent is equivalent to taking the reciprocal of the base. Hence, the final answer = 9⁻⁸ becomes 1/9⁸.
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Find the distance between (-3,7) and (2,9). Use an exact answer in radical form.
The formula of a distance between two points:
[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
We have the points (-3, 7) and (2, 9). Substitute:
[tex]d=\sqrt{(2-(-3))^2+(9-7)^2}=\sqrt{5^2+2^2}=\sqrt{25+4}=\sqrt{29}[/tex]
Answer:
sqrt(29)
Step-by-step explanation:
To find the distance between two points, we use the formula
d =sqrt((x2-x1)^2 + (y2-y1)^2 )
= sqrt( (2--3)^2 + (9-7)^2)
= sqrt( 2+3)^2 + (2)^2)
= sqrt( 5^2 + 4)
= sqrt( 25+4)
= sqrt(29)
The distance is the sqrt(29)
Train A departs station one traveling at 75 mph. Train N departs station two 30 minutes later traveling at 45 mph. The stations are 300 miles apart. The equation below gives the distance between the trains, D, in miles as a function of, T, the time after Train B departs. D=|262.5-120T| For which two values of T will D=50? Round to the nearest tenth.
A)1.8 and 2.6
B)0.2 and 0.3
C)-17.8 and 26.0
D)-1.8 and 1.8
Answer:B
Step-by-step explanation: