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3 years ago

13. x > 30 28 29 30 31 32

Mathematics

1 answer:

Nutka1998 [239]3 years ago

5 0

Answer:

31, 32

Step-by-step explanation:

$\because \: x > 30 \\ \implies \: x = 31, \: \: 32$

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The question and answer choices are listed in the picture.

zepelin [54]

Given:
$L=2 \pi r( \frac{x}{360})$

Solution:
If we want to find the solution for r, we need to move the r to the left side first. So I reverse the side
$2 \pi r( \frac{x}{360})=L$

Move 2π to the right side. Because on the left side 2π acts as numerator, after it's moved to the right side, it becomes denominator.
$2 \pi r( \frac{x}{360})=L$
$r( \frac{x}{360})= \frac{L}{2 \pi }$

Move 360 to the right side. Because on the left side 360 acts as denominator, after it's moved to the right side, it becomes numerator.
$r( \frac{x}{360})= \frac{L}{2 \pi }$
$r(x)= \frac{360L}{2 \pi }$

Move x to the right side. Because on the left side x acts as numerator, after it's moved to the right side, it becomes denominator.
$r(x)= \frac{360L}{2 \pi }$
$r= \frac{360L}{2 \pi x}$

Then simplify the fraction
$r= \frac{360L}{2 \pi x}$
$r= \frac{180L}{ \pi x}$

The answer is second option

5 0

3 years ago

Someone please help me I’m struggling with these questions

IrinaK [193]

Sorry i’m not positive on how to solve the other ones and i don’t want to teach you wrong but here is the answer to number 3 i hope it helps.

4 0

3 years ago

2t + 8 is greater than or equal to -4 ( t + 1 ), whats the answer to the equation?

Natali [406]

Step-by-step explanation:

2t + 8 > - 4( t + 1)

2t + 8 > - 4t - 4

2t + 4t < - 4 +8

6t < 4

Divide both sides by 6

T < 4

t < 2

I think that is the answer

Hope it helps :)

Please be careful about the sign

7 0

3 years ago

There are 220 people who voted at the 6th grade meeting.Sixty percent of the voters are in favor of changing the school mascot.H

Amiraneli [1.4K]

60% of 220 is 132.
220 -132 = 88

88 people.

4 0

4 years ago

You have $125.60 in quarters and

Sloan [31]

Answer:

Quarters = q = 200

Dimes = d = 756

Step-by-step explanation:

Let

Dimes = d

Quarter = q

Value of each Dime = 0.10

Value of each Quarter = 0.25

d + q = 956 (1)

0.1d + 0.25q = $125.60 (2)

From (1)

d = 956 - q

Substitute d = 956 - q into (2)

0.1d + 0.25q = $125.60

0.1(956 - q) + 0.25q = $125.60

95.6 - 0.1q + 0.25q = $125.60

- 0.1q + 0.25q = 125.60 - 95.6

0.15q = 30

Divide both sides by 0.15

q = 30 / 0.15

= 200

q = 200

Substitute q = 200 into (1)

d + q = 956

d + 200 = 956

d = 956 - 200

= 756

d = 756

Therefore,

Quarters = q = 200

Dimes = d = 756

3 0

3 years ago