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3 years ago

The perimeter of a rectangle is 24 cm. if the length is y cm, what is the width?

Mathematics

1 answer:

KiRa [710]3 years ago

3 0

Answer: x=12-y

2x+2y=24
2x=24-2y
x=12-y

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How many hundredths are in one tenth? Explain using pennies and dimes.

Umnica [9.8K]

Answer:

11 ways

100 Pennies & 0 Dimes

90 Pennies & 1 Dimes

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Step-by-step explanation:

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3 years ago

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Answer:

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3 years ago

The area of the shaded sector is shown. Find the radius of circle M. Round your answer to the nearest hundredth.

Vaselesa [24]

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete, as the sector, its area and the angle at the center are not given.

I will solve this using the following illusration

The area of a sector is:

$Area= \frac{\theta}{360} * \pi r^2$

Assume that:

$\theta = 120$

$Area = 20$

The equation becomes

$20= \frac{120}{360} * \pi r^2$

Simplify

$20= \frac{1}{3} * \pi r^2$

Take: $\pi = 3.14$

$20= \frac{1}{3} *3.14* r^2$

Cross Multiply

$3.14 * r^2 = 20 * 3\\$

Solve for $r^2$

$r^2 = \frac{20 * 3}{3.14}$

$r^2 = 19.11$

Take square roots

$r = \sqrt{19.11$

$r = 4.4$

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3 years ago

The sum of three numbers is 12. The first number is the difference of the other two numbers. When you add the other two numbers

Eddi Din [679]

The first group of numbers: 2, 4, 6

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3 years ago