Mathematics High School

Combine like terms.
9y2 + 9(7y2-5) =
I need this for now please

Answers

Answer 1

Answer:

72y2-45

Step-by-step explanation:

9y2 + 9(7y2 - 5)

you multiply the 9 by the stuff in the parentheses

9y2 + 63y2 - 45

72y2-45

Related Questions

Ten subtracted from the quotient of a number and 7 is less than -6

Answers

Answer: (x ÷ 7) - 10 < -6

Step-by-step explanation:

You are buying a video game that is on clearence. The original price was $60. It is $42 off the original price.

What is the percent of change?

Is it an increase or a decrease?

Answers

Answer:

20%,decrease

Step-by-step explanation:

60-42=12

increase÷original×100

=12÷60x100

=20%

decrease

Which of the following rational functions is graphed below?
A. F=1/3x^2
B. F=1/(x-3)^2
C. F=1/(x+3)^2
D. F=3/x^2​

Answers

Answer:

B. F=1/(x-3)^2

Step-by-step explanation:

Math ez.

look at the graph of a line and write its equation​

Answers

y= -1x+4

hope this helps

A small jar holds 75% as much as a large jar. If the small holds 36 ounces, how many ounces does the large hold? Explain your reasoning.

Answers

Answer:

48 ounces

Step-by-step explanation:

x = small jar

y = large jar

x= 0.75y

36= 0.75y

y = 48

Answer:

the answer is 48 ounces  i took that on my test I'm positive

Step-by-step explanation:

y
is directly proportional to
x
2
.
If
y
=
12
when
x
=
2
find
y
when
x
=
6

Answers

Write it well, I don't understand

Polygon abcd is rotated 90 degrees counterclockwise about the orgin to create polygon a b c d , match each set of cordinates to the vertices of polygon a b c d

Answers

Answer:

A'(-1, 1), B'(-2, 1), C'(-2, 2) and D'(-1, 3).

Step-by-step explanation:

Transformation is the movement of a point from its initial location to a new location. Types of transformation is reflection, rotation, translation and dilation.

Rotation is the turning of an object about a point. If a point A(x, y) is rotated 90 degrees counterclockwise about the origin, the new point would be A'(-y, x)

From the image attached, the coordinates of polygon ABCD is A(1, 1), B(1, 2), C(2, 2), D(3, 1). If polygon ABCD is rotated 90 degrees counterclockwise about the origin, the new vertices would be at A'(-1, 1), B'(-2, 1), C'(-2, 2) and D'(-1, 3).

what are the expressions that are equivalent to 2x + 3x + 8 - 3x - 2​

Answers

Answers that equivalent to the expression 2x+3x+8-3x-2 would be the choices A and C. If you notice, in choice A, you have just combined all the like terms which results in 2x+6 and in Choice C, you have combined all your constants and the the two terms 2x and 3x resulting in 5x-3x+6 which all remain equivalent to he original given expression

!pic attached!Earl and Ray run competing carpet-cleaning services. Earl charges $50 for a house call and $40 per carpet cleaned. Ray charges the

same amount per carpet cleaned, but his total cost is always $30 less than Earl's. Which equation expresses the total cost, t, for Ray to

clean as a function of carpets cleaned, c?

Answers

Answer:

t= 20+40c

Step-by-step explanation:

Given that Ray's total cost is always $30 less than Earl's and they charge the same amount per carpet cleaned, the difference is in the amount charged for a house call and to find that amount you have to subtract 30 from the amount Earl's charges:

50-30=20

This means that Ray charges $20 for a house call and $40 per carpet cleaned. According to this, the equation would indicate that the total cost for Ray is equal to the amount he charges for a house call plus the price per carpet cleaned for the number of carpets cleaned, which would be:

t= 20+40c, where:

t is the total cost

c is the number of carpets cleaned

The diameter of a circle is 40.0cm. What is the circumference of the circle?
Use 3.14 for pi

Help would really be appreciated bc I do not understand circles lol

Answers

Answer:

Answer is 125.6

Step-by-step explanation:

Diameter=40cm

radius=40÷2 = 20cm

Circumference = 2πr

=2×3.14×20

=125.6

A horse weight is 700lb and needs medication that is 10mg per 100kg what is the horses weight in kg?

Answers

Answer:

315 kg

Step-by-step explanation:

to find the weight of the horse:

1lb = 0.45 kg (rounded the .45)

(700lb) x (0.45)= 315

to find how much medicine they need:

315/10= 31.5

the horse wieghs 315kg meaning that they would need 31.5mg of medication.

If a field's length is 75m and breadth is 50m then what is the area?

Answers

Answer:

3750m^2 is it's area hope it helps

Answer:

3750m²

Step-by-step explanation:

75x50=3750

what is twice a number x, minus 14

Answers

Answer:

the twice a number of 14

Step-by-step explanation:

14-2 11

Need help again please

Answers

Answer:

F.

Step-by-step explanation:

Answer:f

Step-by-step explanation:

SOMEONE PLEASE HELP ME WITH THIS QUESTION!

Answers

Answer:

i dont know but i have a pic for u

Step-by-step explanation:

At most 3 because 21% of 10 people is 2.1 people so the most would be 3 according to that statistic.

Solve the equation

x/-2-17=-7

Answers

Answer: x= -20

Step-by-step explanation: hope it helps thx for the points

Answer:

Step-by-step explanation:

I need help :( (there's a photo)

Answers

Answer:

C5. 2.88

C6 25

C7 3

C8 6

C9 60

C10 5

Answer:

1. 8%  2. 25%   3. 3%   4. 6%   5. 60%   6. 5%   7. 42%   8. 51%   9. 11%   10. 150

Step-by-step explanation:

This took forever

9 ounces = how many pounds? in fraction form

Answers

Answer:

9/16 pounds

Step-by-step explanation:

1 pound = 16 ounces

With this information, we have make a proportion to find the number of pounds 9 ounces is

Let p = the number of pounds

16/1 = 9/p

Multiply both sides by 1 to get

16 = 9/p

Multiply both sides by p

16p = 9

Divide both sides by 16

p = 9/16

This fraction is in its simplest form and can't be simplified any more.

Answer:

9/16 is the answer brainliests

Step-by-step explanation:

Iĺl mark brainlist

Find the unknown side length, x. Write your answer in simplest radical form.

A. 4√32
B. 22
C. 16√5
D. 16√13

Answers

Answer:

C. 16√5

Step-by-step explanation:

a squared plus b squared equals c squared!

what is the answer to f(x) = x + 7?

Answers

Answer:

-7

Step-by-step explanation:

I'm guessing y=0

0=x+7

-7=x

If 3 varies inversely as x and y=2 when x=25, find x when y=40

Answers

since y varies inversely as x , the equation is y=k/x....... Then you plug in 2 for y and 25 for x to find K....... After that you get K= 50...... Then plug in 50 for K and 40 for y then solve for x....... After that you get X= 1.25


What is the altitude of an equilateral triangle that has sides of length 40 cm?

Answers

Answer:

Step-by-step explanation:

Jaden buys 4 pounds of apples for $7.44 . What was the cost per pound .

Answers

Answer:
$1.86 per pound

Explanation:
7.44 ÷ 4 = $1.86

1.86 x 4 = $7.44

Answer:  It cost  $1.86 per pound.

Step-by-step explanation:

To find the cost per pound, divide the  cost by the number of apples.

7.44 / 4 = 1.86

Evaluate each expression if: a = 5, b = 3, and c = 4.
4) 6a-4b5)
I

Answers

Answer:

-30

Step-by-step explanation:

Simply substitute the values in for the variables:

6(5) - 4(3)(5)   ~ parentheses indicate multiplication in this case

30 - 60 = -30

Help and please make sure the answer is right? :)

Answers

Answer:

8

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

hello again lol

these are alternate interior angles so they are equal

5x + 5 = 45

5x = 40

x = 8

Click on the dot plot
PLSSSSSS HELPPPPPPP FAST WILL GIVE BRAINLIEST

Answers

Answer:

neither one of those are a dot plot

Step-by-step explanation:

Answer:

height of kids in class is the dot plot

Step-by-step explanation:

Help 7th grader :) plzzz :3

Answers

30/12 is 2.5
The scale factor is 2.5
16x2.5 is 40
Side PQ is 40 inches

X-3+7(x + 3) - 3x – 12

Can someone simplify it or expand it please I need it in like 5 mins !

Answers

Answer:

5x+6

Step-by-step explanation:

x-3+7x+21-3x-12

5x+6

[tex] =\tt x - 3 + 7(x + 3) - 3x - 12[/tex]

[tex] =\tt x - 3 + 7x + 21 - 3x - 12[/tex]

[tex] =\tt 7x + x - 3x - 3 - 12 + 21[/tex]

[tex] =\tt 8x - 3x - 15 + 21[/tex]

[tex] \color{plum}=\tt\bold{ 5x + 6}[/tex]

▪︎Therefore :

[tex]\color{hotpink} =\tt x - 3 + 7(x + 3) - 3x - 12 \color{plum}=\tt\bold{ 5x + 6}[/tex]

There are 50 U.S states. seven twenty-fifths of the state share a land border with Canada or Mexio of those 2/7 share a border with mexio how many states share a border with Canada?????

Answers

thirteen states share a border w canada

There are 20 states that share the border with Canada.

What is subtraction?

Subtraction is a mathematical operation. Which is used to remove terms or objects in the expression.

Given:

There are 50 U.S. states.

Seven twenty-fifths of the state share a land border with Canada or Mexico.

That means,

7[tex]\frac{20}{5}[/tex]

= 7 x 4

= 28

a number of 28 states share the border with Canada or Mexico.

Of those 2/7 share a border with Mexico,

that means, the number of,

= 28 - 28 x 2/7

= 28 - (4 x 2)

= 28 - 8

= 20 states share the border with Mexico.

Therefore, the required number is 20.

To learn more about subtraction;

https://brainly.com/question/2346316

#SPJ2

Please show work and answer correctly :D (Please dont answer until hanifa answers thank you!)

Answers

Answer:

1 3/4, 5 2/3, 7 11/27, 12 1/4, 1 7/8, 2 10/11

Step-by-step explanation:

1/5( 9 - 1/4) = 1/5( 8 3/4) = 1/5*35/4 = 7/4 = 1 3/43/7(14 - 7/9) = 3/7(13 2/9) = 3/7*119/9 = 17/3 = 5 2/35/9(14 - 2/3) = 5/9(13 1/3) = 5/9*40/3 = 200/27 = 7 11/277/9(16 - 1/4) = 7/9(15 3/4) = 7/9*63/4 = 49/4 = 12 1/41/4(8 - 1/2) = 1/4(7 1/2) = 1/4*15/2 = 15/8 = 1 7/81/7(21 - 7/11) = 1/7( 20 4/11) = 1/7*224/11 = 32/11 = 2 10/11
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