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3 years ago

A triangle has side lengths x, 10, and 7. What are the possible values of x?

Mathematics

1 answer:

rewona [7]3 years ago

7 0

Answer:

7,12.2

Step-by-step explanation:

100+49=149

√149≈12.2

x^2+49=100

x^2=51

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3 years ago

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use the formula for the circumference of a circle to write a formula for the area of a circle in terms of its circumference

Ber [7]

Answer:

$A=\frac{C^2}{4\pi ^2}$

Step-by-step explanation:

Recall to find the circumference of a circle the formula is $C=\pi d$ or $C=2\pi r$ . We will also need the formula for the area of a circle which is $A=\pi r^{2}$ . Since the area formula is in terms of r we will use the second formula for circumference.

We start by solving for r in the Circumference formula.

$C=2\pi r\\\frac{C}{2\pi } =r$ . We input this value of r into the area formula.

$A=\pi r^{2} \\A=\pi (\frac{C}{2\pi })^2\\A=\pi (\frac{C^2}{4\pi ^2 })\\A=\frac{C^2}{4\pi ^2}$

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4 years ago

the length of a rectangle is equal to triple the width. Write a system of equations that can be used to find the dimensions of t

IrinaK [193]

First you set and equation for length which is three times width

l=3w

The substitute in the perimeter, p, into the equation for perimeter which is p=2l+2w

88=2l+2w

Then substitute in length, l, with the equation previously created: l=3w

88=2(3w)+2w

Multiply 2 and 3w

88=6w+2w

Combine like terms: 6w+2w

88=8w

Divide to get the value for w

w=11

Since you figure the value for w, 11, you can plug it into the equation for length which is l=3w

l=3(11)

When you do you get

l=33

So the length is 33 and the width is 11

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3 years ago

write the number for each named while number. fifty-two trillion one billion,nineteen million,five hundred two thousand,eleven

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52,001,019,502,011. I hope this helps!

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3 years ago

A/3 -7=15 im confused for my son

Butoxors [25]

Answer: a = 22

Step-by-step explanation: First isolate a/3 by adding 7 to both sides of the equation. That gives you a/3 = 22.

From here since a is being divided by 3, multiply both sides of the equation by 3 so a = 66. We can check our answer by substituting a 66 back in for a in the original equation and we have $\frac{66}{3} - 7 =15$ or 22 - 7 = 15 or 15 = 15. Since this is a true statement, our answer checks.

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3 years ago