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lina2011 [118]
3 years ago
7

a swimming pool is three times as long as it is wide. the sidewalk around the pool is 72 yds long. determine the length and widt

h of the pool
Mathematics
2 answers:
just olya [345]3 years ago
7 0

Answer:

<u>Length</u> - 54 yds

<u>Width</u> - 18 yds

Step-by-step explanation:

72 yds = perimeter

3x + x =72

4x = 72

Since 4x equals 72, you would divide 72 by 4 to find out how much x equals.

72/4 = 18 yds

18 yds = width

Since the length is three times as long as the width, you would multiply 18 by 3.

18 x 3 = 54

54 yds = length

Lilit [14]3 years ago
4 0
72 over 3 and that is the width
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after selling three fifth of its books, a bookstore had 880 textbooks left. how many books were in the bookstore initially
sleet_krkn [62]

Answer:

yours answer is 1760

Step-by-step explanation:

he sold 3/5 of its books , that means 2/5 is left and 2/5 is 880

so 2/5=880  


880/5 = 176

176x2=352


352x5=1760

5 0
3 years ago
Brooklyn has a goal to save $8,000 to buy a new entertainment system. In order to meet that goal, she deposited $4,132.79 into a
densk [106]
To see how much interest she'll get after a quarter:

$4132.79 + ($4132.79 × 0.048) = $4331.16

After two quarters:
$4331.16 + ($4331.16 × 0.048) = $4359.06

You can keep going until eventually reaching $8000 then see how many quarters has passed. That's a lot of calculator work!

There's another way that uses less calculation, but more algebra. I call it the exponential formula method! There's this general formula for stuff that increases exponentially, like virus, population, and MONEY:

m= d {e}^{tc}

M is money, d is deposit, t is time taken, and c is just some unknown constant related to the interest rate. There's also the natural logarithm form of this equation, which will come in handy later:

ln( \frac{m}{d} ) = tc

Alright first we gotta find that constant c for this equation to be useful! Let's plug in stuff we know.

ln( \frac{4331.16}{4132.79} ) = (0.25)c

We know how much she'll have after one quarter (0.25 years), and we know how much she deposited initially.

After pressing some buttons on the calculator we'll find that c = 0.1875.

Great! Now we can use that formula to find how many years (t) it'll take to reach M=$8000. To save time I'm going to use the natural log form:

ln( \frac{8000}{4132.79} ) = t(0.1875)

That will give us t = 3.522 which means it'll take approximately 3.5 years for her deposit to reach $8000!
5 0
3 years ago
Read 2 more answers
Determine type of triangle PLZZ ASAP
g100num [7]

Answer:

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Step-by-step explanation:

no side congruent and right

8 0
3 years ago
The school auditorium can hold at most 480 people. There were 185 advance tickets sold for the school play. Write and solve an i
attashe74 [19]

Answer:

p + 185 ≤ 480

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At most 295 people can attend the play

Step-by-step explanation:

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2 years ago
The diagram shows WXY. which term describes point Z
larisa86 [58]
The answer is d because the centroid stems from medians in a triangle
7 0
3 years ago
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