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Makovka662 [10]
3 years ago
8

Which expression is equivalent to 3a+9a+7b-b

Mathematics
1 answer:
LuckyWell [14K]3 years ago
3 0

Answer:

12a+6b

Step-by-step explanation:

3a+9a+7b-b

Combine like terms

3a+9a    +7b-b

12a         +6b

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Which is greater 1.56 or 1.29
ruslelena [56]

Answer:

<u>1.56 is greater than 1.29</u>. (Check after the decimal point, 5 is greater than 2, so 1.56 is greater than 1.29)

8 0
2 years ago
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HELP PLEASE IM BEING TIMED!! WILL GIVE BRAINLIEST!!
kolbaska11 [484]

ANSWER

The correct choice is C.

EXPLANATION

The perimeter of a rectangle is given by;

P=2(w+l)

For the first rectangle, the perimeter is;

P=2(8+4)=24

For the second rectangle, the perimeter is

P=2(8+8)=32

For the third rectangle, the perimeter is

P=2(8+12)=40

The correct choice is C

8 0
3 years ago
A cylinder has a volume of 83 in3 and is 10 in. tall. What is the radius of the cylinder in inches? Round your answer to the nea
Nataly [62]
To find the radius of the cylinder you will use the volume formula and solve for the radius.

V = pi x r^2 x h
83 = 3.14 x r^2 x 10
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r^2 = 2.6; find the square root of 2.6
r = 1.6 in.

The radius is approximately 1.6 in.
3 0
3 years ago
Please help me with 7 and 10!! i’ll mark you brainliest:)
Irina-Kira [14]

Answer:

7. 18,480 feet

10. (a.) 1.5     (b.) 150%     Sorry I don't know the answers to c & d.

Step-by-step explanation:

7. \frac{3.5 miles}{1 ft.} × \frac{5,280 ft.}{1 mile} = 18,480ft.

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7 0
3 years ago
AABC is reflected across the x-axis and then dilated by a factor of 2 using the
Hitman42 [59]

The transformation of A is A' = (8, -3)

<h3>How to determine the transformation?</h3>

From the graph, we have:

A = (3,1)

The scale factor and the center of dilation are given as:

k = 2

(a,b) = (-2,1)

The rule of reflection across the axis is:

(x,y) ⇒ (x,-y)

So, we have:

A' = (3,-1)

The rule of dilation is represented as:

(x,y) ⇒ (k(x - a) + a, k(y - b) + b)

So, we have:

A' = (2(3 + 2) - 2, 2(-1 - 1) + 1)

Evaluate

A' = (8, -3)

Hence, the transformation of A is A' = (8, -3)

Read more about transformation at:

brainly.com/question/4289712

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