Simplify the expression by combining like terms. Then,
evaluate the expression by substituting the given values
for the variables.
x=5 and y=2
y^2 + xy – 7y^2

Answers

Answer 1

Answer:

-14

Step-by-step explanation:

The like terms in this equation is y^2 and -7y^2 so combining the two the equation becomes:

xy-6y^2

Then we substitute the values in:

5×2-6×2^2 = -14


Related Questions

What is the slope of the linear equation: y=-5x+6

Answer Choices:
A. -5
B. -5x
C. 1/5
D. 6

Answers

it is -5.............

3 squares are positioned to form a triangle. The small square is labeled 6 units, medium square is 8 units, and large square is not labeled.
Answer these questions about the right triangle.

What is the area of the square of the leg 6?

✔ 36 square units
What is the area of the square of the leg 8?

✔ 64 square units
What is the area of the hypotenuse square?

✔ 100 square units
What is the length of the hypotenuse?

✔ 10 units

Answers

Answer:

Area of Square(leg 6): 36units

Area of square(leg 8): 64units

(3) 100units is the Area

(4) Length of hypotenuse is 10units

Step-by-step explanation:

Square(leg 6): 6*6= 36

Square(leg 8): 8*8=64

The bigger square: 64+36=100

The length of the hypotenuse is 10units because 10*10=100

I hope this helps have a good day! :)

Marcus got a ratio of correctly answered questions to total questions of 9 : 12 on his past
quiz. What percent of the quiz did Marcus answer incorrectly?
I NEED HELP QUICKK

Answers

Answer:

The correct answer is 30%

What is the formula to find the IQR or at least how do you calculate it from a boxplot?

Answers

Answer:

The IQR is the difference between quartile 3 and 1

Step-by-step explanation:

Answer:

IQR = Q3 - Q1

The area of a triangle is 3232. Two of the side lengths are 74 and 94 and the included angle is acute. Find the measure of the included angle, to the nearest tenth of a degree.

Answers

If im not wrong it would be 12 degrees

can someone help me. its hard

Answers

Answer:

complementary angles

Step-by-step explanation:

We know that complementary angles add up to 90 degrees which is andgles a and b.

By the way, can you follow me on Brainly?

Thanks!

Answer:

B. Complementary angles

Step-by-step explanation:

angle a + angle b = 90 degrees

the two angles form a right angle

two angles that add up to 90 degrees are called complementary angles

what is your dream job?

Answers

My dream job is to be a pro football player for the NFL.

Answer:

a Nurse

Step-by-step explanation:

Please help me with this

Answers

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The radius of a circle is 1 yard. What is the circle's circumference?
r=1 yd
Use 3.14 for ​.

Answers

Circumstance is 2 x Pi x r

2 x 3.14 x 1
Circumstance = 6.28 yd

The circumference of the circle is 6.28 yards.

What is circumference of the circle?

"It  is the length of the boundary of the circle."

Formula to calculate the circumference of the circle:

C = 2 × π × r, where 'r' is the radius of the circle.

For given example,

r = 1 yd.

π = 3.14

Using the formula for the circumference of circle,

⇒ C = 2 × π × r

⇒ C = 2 × 3.14 × 1

C = 6.28 yd.

Therefore, the circumference of the circle is 6.28 yards.

Learn more about circumference of the circle here:
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Evaluate the function.

f(x)= - x^2 - 10x

find f(-5)

Answers

Answer:

f(- 5) = 25

Step-by-step explanation:

To evaluate f(- 5) , substitute x = - 5 into f(x) , that is

f(- 5) = - (- 5)² - 10(- 5) = - 25 + 50 = 25

Rafa went to Lone Star Auto who charges $35 for each car plus $7 per hour. If Rafa's bill was $63, how many hours did he get his car worked on?

Answers

Answer: 4 hours

Step-by-step explanation:

Given

Auto charge a fixed amount of $35

and $7 per hour

Rafa bill was $63

Suppose Rafa travels for x hours. So, we can write

[tex]\Rightarrow 63=35+7x\\\Rightarrow 28=7x\\\Rightarrow x=4\ \text{hour}[/tex]

Five coins are flipped. What is the probability that all coins land tails up?​

Answers

Answer:

Step-by-step explanation:

One coin

Answer:

i think 1/10

Step-by-step explanation:

You have a rectangular box with the dimensions of 4 feet x 2
feet x 1 foot. You have to get it painted red. The painting will cost
$2.50 per square foot. How much will it cost you?

Answers

Answer:120

Step-by-step explanation:

4x2x1=8, 6 sides with 2.50

Which statement accurately describes the scatterplot?
У
:.
.
A. There are two outliers.
B. There are three distinct clusters.
C. The points seem to be clustered around a line.
D. There are no outliers. .

Answers

C. Hope it helps
#CarryOnLearning

The correct statement accurately describes the scatterplot is,

⇒ The points seem to be clustered around a line.

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;

A scatterplot is shown in figure.

Now, By given figure, We get;

When we draw the line of equation,

⇒ The points seem to be clustered around a line.

Hence, The correct statement accurately describes the scatterplot is,

⇒ The points seem to be clustered around a line.

Learn more about the equation of line visit:

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The volume of the cube shown is 125 cubic centimeters. Which must be the value of n?

Answers

n = 20.83

125 / 6 = 20.83

their are 6 sides in a cube and 125 cubic centimeters

you're welcome

Karla made a model of her grandfather's fishing boat using a scale where 2 inches represents 3 feet. Her grandfather's actual boat is 28 feet long. What is the length of Karla's model boat?​

Answers

the answer is 3 1\9. thats the lentgh of the boat

3 1/9 this could be done on a calculator

Kit charges customers an initial fee plus a certain amount per hour to walk their pets. The table below shows the amount of money that Kit earns at her job based on the number of hours that she works. Which of the following equations represents a scenario where Kit would charge customers a higher rate to walk their pets than what is shown in the table?

Answers

Answer:

The answer would be 7.5

Step-by-step explanation:

This is due to if there were to be a chart it would start at 15 then continue by 7.5 which would then lead to 1 hour which is 22.5 min additionally other people are not answering this because you did not give all the information such as the chart etc and the answers unlike me i have the toolds and the questions.

The equation y = 8x+10 represents a scenario where Kit is charged a higher hourly rate to walk their pets.

What is a linear equation?

It is defined as the relation between two variables if we plot the graph of the linear equation we will get a straight line.

If in the linear equation one variable is present then the equation is known as the linear equation in one variable.

As per the table:

When the hours are 0 earnings are $15

Initial fee = $15

And when hours are 1 earnings is 22.5

∴ $22.5 = initial fee + hourly rate

Hourly rate to walk their pets = 22.5 - 15 = $7.5

So from the equation:

y = 7.25x + 20

Here 7.25 is the hourly rate to walk their pets and 20 represents the initial cost.

After observing all the equations:

In the equations:

y = 8x + 10

The hourly rate to walk their pets is 8 and the initial cost is $10 in this case Kit is charged a higher hourly rate.

Thus, the equation y = 8x+10 represents a scenario where Kit is charged a higher hourly rate to walk their pets.

Learn more about the linear equation here:

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Solve for the missing value.
58

Answers

i think it is 58 degrees

Help!! Il give thanks

Answers

Answer:80

Step-by-step explanation:

All angles in a triangle add up to 180.

70+30= 100

180-100= 80

There you have it

What is the midpoint of the vertical line segment graphed below? (2, 4), (2, -9) A. (4, -5). B. (2, -5/2). C. (2, -5). D. (4, 5/2)

Answers

Answer:

B. [tex] (2, -\frac{5}{2}) [/tex]

Step-by-step explanation:

Given:

(2, 4) and (2, -9)

Required:

Midpoint of the vertical line with the above endpoints

Solution:

Apply the midpoint formula, which is:

[tex] M(\frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2}) [/tex]

Where,

(2, 4) = (x_1, y_1)

(2, -9) = (x_2, y_2)

Plug in the values into the equation:

[tex] M(\frac{2 + 2}{2}, \frac{4 + (-9)}{2}) [/tex]

[tex] M(\frac{4}{2}, \frac{-5}{2}) [/tex]

[tex] M(2, -\frac{5}{2}) [/tex]

Which of the following topics would you discuss first in a speech on applications of math in the everyday world?

geometry
calculus
basic operations
algebra

Answers

Answer:

basic operations

Step-by-step explanation:

QUIZ 3: ORGANIZING SPEECHES

pls help 209572.999129 round to the nearest cent

Answers

Answer:

$209,573.00

Step-by-step explanation:

when rounding to a place, you only need to look at the numbers one place beyond the place you are rounding to. For example, if you want to round 0.878 to the nearest tenth, you only need to look at 0.87, since both 0.87 and 0.878 round to 0.9. In this case, you are rounding to the nearest hundredth because one cent represents one hundredth of a dollar. You only need to look at 209572.999. Since the last digit is 9, which is greater than 5, you round up to 209573.00.

hope this helps please lmk if its wrong :)

A 7-meter by 7-meter square is reduced so that each side is half as long as the original.

a. Describe the new square. (Side length)

b. Write the ratio of the perimeters in the order New:Original.

c. Write the ratio of the areas in the order New:Original.

Answers

Answer:

Step-by-step explanation:

7m ÷ 2 = 3.5mPart A: New square is 3.5-meter by 3.5-meterThe original square's perimeter is 7x4=28-meter.The new square's perimeter is 3.5x4=12-meterPart B: The ratio is 12:28 or 3:7The original square's area is 7²=49 meter²The new square's area is 3.5²=12.25 meter²Part C: The ratio is 49:12.25

What is this pls? i have no time

Answers

Answer:

number lines of x>4 and x<-1 respectively

Step-by-step explanation:

240 t-shirts made in 9 hours. Round to the nearest tenth.

Answers

Answer:

240/9=26.6666666667

Rounded:

26.7

Brainlist Pls!

Which equation represents a line which is parallel to the line x+4y=-20x+4y=−20?

Answers

Answer:

y=7x+3, y=7x−6

An art dealer makes 17.5% commission on every painting sold. If a painting sold for $1,500, what was the commission?

Answers

Answer:

262.5 dollars

Step-by-step explanation:

17.5% of 1500 is 262.5

Answer:

262.50

Step-by-step explanation:

change 17.5% into 0.175 then multiply it by 1,500

Aiden borrows a book from a public library. He read a few pages on day one. On day two, he reads twice the number of pages than he read on day one. On the third day, he reads six pages less than he reads on the first day. If he has read the entire book that contains 458 pages, how many pages did he read on day three?

Answers

Answer:

.

Step-by-step explanation:

How do I sort them because it doesn’t quite make sense to me

Answers

Answer:

can't see image

Step-by-step explanation:

Higher internet rate on- initial consequences
Other 2 go to long term consequences

What is the Y-intercept of the simplified equation??

Answers

Answer: -7

Step-by-step explanation: y+3x=8x-7

subtract 3x from both sides y=5x-7

y=Mx+b

b=-7

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