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

Please help me answer this step by step
y + 1/2 = 3/4

Answers

Answer:

just translate

Step-by-step explanation:

thats bot much, ñ

Answer:

[tex]y + \frac{1}{2} = \frac{3}{4} \\ y + \frac{2}{2 \times 2} = \frac{3}{4} \\ y + \frac{2}{4} = \frac{3}{4} \\ y = \frac{3}{4} - \frac{2}{4} \\ y = \frac{1}{4} \\ thank \: you[/tex]

solve this table
will give brainliest​

Answers

Answer:

For linear function, top to bottom, it's:

f(x)

b

a

x

For mathematical meaning, top to bottom, it's:

output value of an equation

y-intercept

slope or common difference

input value of an equation

Step-by-step explanation:

Rational numbers that are not intergers

Answers

Answer:

This includes numbers that are not whole numbers (+ or -). For example, 6.79, 20,193.917017, 4/25, etc.

A shipment of sugar fills
4/9 containers. If each container holds 2 2/5
tons of sugar, what is the amount of sugar in the entire shipment?
Write your answer as a mixed number in simplest form.

Answers

Answer:

For this problem, multiply these fractions.

 

First, make each one an improper fraction: 2 4/5 is the same as 14/5 and 2 3/7 is the same as 17/7.

 

Now, 14/5 times 17/7 yields 238/35 which reduces to 34/5. This may be expressed also as the mixed fraction 6 4/5.

 

So, the shipment contains 6 4/5 tons of sugar. (This is also equal to 13,600 pounds of sugar.)

Given: 5n - 42 = 12n; Prove: n = -6
Statements and reasons

Answers

Answer:

yes n is -6

Step-by-step explanation:

b/c 5(-6)-42=12(-6)

-30-42=-72

-72=-72

Solve for x please and thank you

Answers

Answer:

x = 3

Step-by-step explanation:

40+ 46x + 2 = 180 degrees

46x = 180 - 42

x = 3

Answer:

46x+2°+40°=180° (adj angles on a str line)

46x+42°=180°

46x=180°-42°

=138°

x=138÷46

=3

to what power must you raise the expression 7^1/2 to get 7 as the result?

Answers

Answer:

2

Step-by-step explanation:

(7^1/2)^2=7^(1/2*2)=7

The perimeter of a triangle is 17x−5 units. One side is 3x+5 units and another is 8x−3 units. How many units long is the third side?

Answers

Answer:

17x−5 =85       3x+5 =15      8x-3= -24 here you can use this to find your awnser

Step-by-step explanation:

what is 2 x 24? plz i need help with this

Answers

Answer:

EASY IT'S 48

Step-by-step explanation:

24x2

is the same as

24 + 24

which is 48

Answer:

48

Step-by-step explanation:

         24

      x    2

     ----------

          48

Hmm anyone can solve this is cool, (and will earn a peppermint)


Bill tax: $56
Your Money: $16

(What’s the decrease of money you paid for your tax)

Answers

Prob $56-16=40, so $40 was lost so

the answer is 40..

(Sorry if it’s wrong

3.96 divide by 1.87 can someone help me divide this two number please and please hurry up because

Answers

Answer:

2.11764705

Step-by-step explanation:

Brainliest?

PLEASE HELP RN, I need a lot of help on this very hard math homework

Answers

Answer:

[tex]6^{2}[/tex]

Step-by-step explanation:

Use power rules.

[tex]\frac{6^{7} }{6^{5} }[/tex]

[tex]6^{7-5}[/tex]

[tex]6^{2}[/tex]

Another way of solving in which the 6s on the numerator cancel with the 6s on the denominator:

[tex]\frac{6*6*6*6*6*6*6}{6*6*6*6*6}[/tex]

[tex]\frac{6*6}{1}[/tex]

6*6

[tex]6^{2}[/tex]

What is Prefix? ︎︎ ︎︎ ︎︎ ︎︎​

Answers

a word, letter, or number placed before another.

Need help ASAP! Directions in picture;)

Answers

Answer:

x=94/5

Step-by-step explanation:

10x-8=180

10x=188

x=188/180

x=94/5

Terry’s average driving speed for a 2 and a half hour trip was 58 mph. How far did Terry travel?

Answers

Is it is multiplication it is 116 in division 29

145 miles. lets see how i got this.

so first i took the 2.5 hour trip and the average speed, which was 58 mph (or 93.3 kph), and multiplied them together, because of the rule of d=rt.

sidenote: also if you want to find the speed, use r=d/t. also, for finding the time, use the t=d/r rule.

side-sidenote: i hope this answers your question and helps you in the future.

key: r= rate (mph or kph), d=distance, and t=time.

Question is in the photo.

Answers

2^-1(5)^3(7)^4/2^6(5)^-3(7)^3= (5)^6(7)/2^7

Workout the picture below

Answers

Answer:

4 times

Step-by-step explanation:

Area of circle A

[tex]\pi \times {r}^{2} = area \: of \: a \: circle \\ \pi = 3.14 \\ 3.14 \times {8}^{2} \\ 3.14 \times 64 = 200.96 \: {cm}^{2} [/tex]

Area of circle B

[tex]\pi\times 4 (because \: radius \: is \: the \: half \: of \: diameter) \\ 3.14 \times 4 square = 50.24\: {cm}^{2} [/tex]

How many times larger is the area of circle A than circle B

[tex]200.96 \div 50.24 = 4[/tex]

therefore circle A is 4 times larger than circle B in accordance with its area

For BRAINILY please help I need to pass this class

Answers

Answer:

Angle D is the largest angle on this triangle! (74.261°) I hope you pass your class! : )

D= 74.261°

E= 42.184°

F= 63.554°

Largest to smallest - D, F, E

The slope of the line is 0. It passes through the point (-3,4). Identify two other points on the line. Justify you answer

Answers

Answer:

Two other points: (2, 4) (6, 4)

Step-by-step explanation:

A line with a slope = 0 is a horizontal line [with a y-intercept of (0, b)], given by the linear equation, y = 4.  This means that the y-coordinate will always equal to 4, regardless of its corresponding x-coordinate. Basically, we could choose any x-coordinate to pair with the y-coordinate of 4.

I chose the ordered pairs, (2, 4) and (6, 4).

Attached is a screenshot of the graphed linear equation, y = 4.        

413,405,397… find the 41st term

Answers

Answer:

it is the frst tow numbrs 41

Step-by-step explanation:

How many liters of a 50% acid solution must be mixed with a 30% acid solution to get 180 L of a 40% acid solution?
____ liters of a 50% acid solution must be used.

Answers

Answer: 90

Step-by-step explanation:

???????????I need help

Answers

Answer:

17. first box- 88

second box- 176

18. first box- 9

second box- 5 5/8

Step-by-step explanation:

See photo.

Solve the proportion. If necessary, round to the nearest hundredth.

Answers

Answer:

......the right answer is 12

Which of the following is true?

Answers

Answer: C

Step-by-step explanation: I hope its right mark me brainliest plss

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

The Correct choice is :

FG is an altitude of Triangle EFH

How many cups of water are needed for 12 cups of flour?

Answers

2 CUPS OF WATER FOR 3 CUPS OF FLOUR

SO 1 CUP = 1.5 water

SO MULTIPLY AND FIND THE ANSWER

Find the distance between (-6,-1) and (4,-5)

Answers

2,889 mi

Distance from South Atlantic Ocean to Gulf of Guinea

Convert the following.
15, 000 m² =________hectare
2.5 hectares =_______m²​

Answers

Answer:

15,000 m²= 1.5 hectares

2.5 hectares= 25, 000 m²

Step-by-step explanation:

Sana makatulong

What is the value of a in the algebraic expression (5a+3)=52

Answers

Answer:

a= 49/5 or 9.8

Step-by-step explanation:

Answer:

49 / 5 ( or ) 9.8

Step-by-step explanation:

( 5a + 3 ) = 52

 5a + 3 = 52

 5a = 52 - 3

 5a = 49

   a = 49 / 5

       ( or )

   a = 9.8

5/3y=-(x-5) the slope intercept

Answers

Answer:

y = - [tex]\frac{3}{5}[/tex] x + 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c

Given

[tex]\frac{5}{3}[/tex] y = - (x - 5) ← distribute parenthesis

[tex]\frac{5}{3}[/tex] y = - x + 5 ( multiply through by 3 to clear the fraction )

5y = - 3x + 15 ( divide terms by 5 )

y = - [tex]\frac{3}{5}[/tex] x + 3 ← in slope- intercept form

solve the inequality. 1/2x > 7​

Answers

Answer:

x>14

Step-by-step explanation:

Answer:

[tex] \frac{1}{2} x > 7[/tex]

[tex]x > 7 \div \frac{1}{2} [/tex]

[tex]x > 7 \times 2[/tex]

[tex]x > 14[/tex]

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