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Ber [7]
2 years ago
11

14. Mrs. Drew wants to build a square sandbox

Mathematics
1 answer:
Sidana [21]2 years ago
6 0

Answer:

44 ft

Step-by-step explanation:

step 1

Find the length side of the square box

The area of the box is equal to

A=b^{2}

where

b is the length side of the square box

we have

A=121\ ft^2

substitute

121=b^{2}

solve for b

square root both sides

b=11\ ft

step 2

Find the perimeter of the square box

The perimeter of the square box is

P=4b

we have

b=11\ ft

substitute

P=4(11)=44\ ft

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Express the ratio below in its simplest form.<br>1/3:1/4​
masha68 [24]

Answer:

it is already.

Step-by-step explanation:

4/12:3/12 is 1/3:1/4

6 0
3 years ago
Read 2 more answers
Please help! In the question you have to find whether the number is either rational or irrational.
Mnenie [13.5K]

Answer:

Square root of 30 is irrational because the answer is a non-terminating decimal.

4/7 is rational because it is a fraction.

21 divided by the square root of 4 is irrational because the result is a non-terminating decimal.

Pi is irrational because it's a non-terminating decimal.

-27 is rational because rational numbers can be positive or negative.

I hope this is correct! :-)

4 0
3 years ago
You're an aeronautical engineering student, and you have been awarded a "Co-op" job at NASA in your junior year of your 4-year p
postnew [5]

Answer:

$85,000

Step-by-step explanation:

8 0
3 years ago
A ball is thrown directly up in the air from a height of 5 feet with an initial velocity of 60 ft/s. Ignoring air resistance, ho
Mice21 [21]

Answer:

3.8 seconds

Step-by-step explanation:

Given equation

h= -16t^2 + 60t + 5

When the ball hits the ground then height is 0

So we replace h with 0 and solve for t

0= -16t^2 + 60t + 5

a= -16 , b= 60 and c= 5

Apply quadratic formula to solve for t

t=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

=\frac{-60+\sqrt{60^2-4\left(-16\right)\cdot \:5}}{2\left(-16\right)}[/tex[tex]=\frac{-60+-\sqrt{3920}}{-32}

=\frac{-60+-28\sqrt{5}}{-32}

=\frac{4(-15+-7\sqrt{5})}{-32}

=\frac{(-15+-7\sqrt{5})}{-8}

Now make two fractions and solve for x

t= -\frac{7\sqrt{5}-15}{8}=-0.0815

t= \frac{7\sqrt{5}+15}{8}=3.83

So answer is 3.8 seconds


4 0
2 years ago
What’s a equivalent expression using prime factorization for the number 254
erik [133]

So prime factorization is what it seems, <u>finding the prime factors of a number.</u> Using prime factorization, we can break down 254 as such:

\underbrace{254}_{\boxed{2*127}}

Since 2 and 127 are prime,<u> the prime factorization of 254 is 2 × 127.</u>

7 0
3 years ago
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