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jok3333 [9.3K]
3 years ago
9

A school choir has 36 members. There are three times as many underclassmen as seniors. How many seniors are in the choir? 9 seni

ors 12 seniors 24 seniors 27 seniors
Mathematics
2 answers:
____ [38]3 years ago
7 0

Answer:

Option A, 9 seniors

Step-by-step explanation:

A school choir has 36 members.

It is given that there are three times as many underclassmen as seniors.

In other way we can say that there are \frac{3}{4} underclassmen and

\frac{1}{4} are seniors.

Seniors are \frac{1}{4} × 36

= 9 seniors.

Option A, 9 seniors

amm18123 years ago
3 0
There are 9 seniors.

Although there are several ways of solving this problem, I just did what was easiest for me in my head. I divided 36 by 4, which gave me 9.
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A rectangular patio has a perimeter of 44 feet. If the length of the patio is 5 feet less than twice the​ width, find the dimens
valentinak56 [21]
ANSWER: L=13; W=9
--Please read this explanation and this will be much easier for you, it took time to type..

Set up variables first. I will lead through how to get the answer.

First get variables. So, what is Perimeter? Perimeter is like so:

P = 2L + 2W = 44ft
Now instead of using P, we'll continue with

2L + 2W = 44 because this can be used to help answer the question better than P.

"Length of the patio is 5 ft less than twice the width"

So it says "length of the patio", so we put

L =

"5 ft less than twice the width"

L = 2W - 5

Now we know what L is, and we can plug this in to our first equation!

2L + 2W = 44
L = 2W - 5

Multiply by 2...
2L = 4W - 10

Plug in...
4W - 10 (2L see?) + 2W = 44

Rearrange...
4W + 2W - 10 = 44

And solve...
=6W - 10 = 44
=6W = 44 + 10
=6W = 54
=6W/6 = 54/6
=W = 9

Now we have W. Plug this into our other equation.

L = 2W - 5
L = 2*9 - 5
L = 18 - 5
L = 13

The length of the patio is 13 ft and the width of the patio is 9 ft.
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3 years ago
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Step-by-step explanation:

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