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Maru [420]
3 years ago
10

Unit Exam: Rational Numbers

Mathematics
1 answer:
Minchanka [31]3 years ago
8 0
Assuming that you’re asking for a fraction of 0.31 where 31 repeats?

31/99
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Will give brainly if ur right and maybe a kiss
Dennis_Churaev [7]

Answer:

14x²(2x³ + 1)

Step-by-step explanation:

Split the value: 28x⁵

28x⁵ = 28x³x²

14x² + 28x³x²

28 = 14 × 2

14x² + 14 · 2x³x²

Factor:

14x²(2x³ + 1)

No homo

6 0
4 years ago
NEED HELP PLEASE HELP (Please indicate answer for which part) :) Thank you
Ronch [10]

Answer:

A

Step-by-step explanation:

A

8 0
3 years ago
B/4+2=-1 <br> b=?<br><br> answer please
Serjik [45]

Answer:

b=−12

Step-by-step explanation:

7 0
3 years ago
The value of y varies inversely as the square of x, and y = 9, when x = 4.
JulijaS [17]

Answer:

The answer is

<h2>12</h2>

Step-by-step explanation:

The above variation is written as

y =  \frac{k}{ {x}^{2} }

where k is the constant of variation

when y = 9

x = 4

We have

k = yx²

k = 9(4)²

k = 9 × 16

k = 144

So the formula for the variation is

y =  \frac{144}{ {x}^{2} }

when y = 1

1 =  \frac{144}{ {x}^{2} }

Cross multiply

x² = 144

Find the square root of both sides

x = √144

x = 12

Hope this helps you.

8 0
3 years ago
Read 2 more answers
A shelf is built on a wall, as shown below. What is the value of x?<br> (2x+1) + (3x-1)
Hoochie [10]

Answer:

x = 18

Step-by-step explanation:

We need to find the value of x.

We know that the sum of angles of a triangle is equal to 180°. So, using this property,

2x+1+3x-1+90 = 180

2x+3x = 180-90

5x = 90

x = 18

So, the value of x is equal to 18.

6 0
3 years ago
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