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3 years ago

Rearrange the formula A = \pi r ^ ( 2) for r

1 answer:

3 0

Consider re-writing this formula as "A = pi*r^2." The backslash symbol "\" is unnecessary.

If A = pi*r^2, and we wish to solve for r, then divide both sides by pi:

A/pi = r^2

Taking the square root of both sides, sqrt(A/pi) = r (r must be positive in this situation).

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Can the product of 4 and any number always be written as a sum of two equal addends

enot [183]

Answer: Yes

Step-by-step explanation:

Example : 4 x 2 = 8

8 = 4×4

Thus proven YES.

hope this helps also mark me brainliest :)

Good luck

6 0

3 years ago

What is 20 5/81 in simplest form

Marizza181 [45]

20 5/81 in its simplest form is 20 5/81.

20 5/81 originally looks like this ⇒ 1625/81

((20 * 81)+5)/81 = (1620+5)/81 = 1625/81 * this is an improper fraction because the numerator is greater than the denominator. Improper fractions must be converted to proper fractions. It will then become a mixed fraction.

 0020 5/81
81 | 1625
162 * 81 x 2
05

5 0

3 years ago

Which of the following sets contain all roots of the polynomial

Zarrin [17]

All these given roots are contained in option C.

The given equation is :

$9x^{3}+9x^{2}-4x-4=0$

$9x^{2}(x+1)-4(x+1)=0$

$(9x^{2}-4)(x+1)=0$

$9x^{2}-4=0,x+1=0$

$x^{2}=\frac{4}{9},x=-1$

$x=\frac{2}{3},x=-1$

Roots = $-1,\frac{-2}{3} ,\frac{2}{3}$

Hence these lie in between $(\frac{-3}{2} ,\frac{3}{2})$

8 0

3 years ago

Eleven students are competing in an art contest. In how

KatRina [158]

Hi there

I think I may have the answer for you!

Answer:

A midsegment of a triangle is a segment connecting the midpoints of two sides of a triangle. It is always parallel to the third side, and the length of the midsegment is half the length of the third side.

Please make sure to check my answer and mark it/

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5 0

4 years ago

What is the perimeter of a rectangle with a length of 6 4/5 inches and a width of 2 2/3 inches?

ANTONII [103]

6 4/5 + 6 4/5 + 2 2/3 + 2 2/3 = 18 14/15

3 0

3 years ago