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viva [34]
2 years ago
6

Please help (images below)

Mathematics
1 answer:
Kay [80]2 years ago
5 0

Answer:

2) D

because:

\frac{9}{1}  \times 4 \\  9 \times 4 \\ 36  \: is \: not \: equal \: to \: 4

4) B

because:

\frac{5}{5}  \times 8 \\ 1 \times 8 \\ 8 \: is \: equal \: to \: 8

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The ratio of boys to girls in the band is 3:6 if there are 81 students in the band how many boys are in the band
Alexandra [31]

Answer:

27 boys

Step-by-step explanation:

The ratio of boys to girls is 3 to 6.  The total is (3+6) is 9.

Using the ratio of boys to total (3 to 9), we set it equal to the ratio of boys to total students (81)

3               b

---- = -------------

9          81

We can solve this using cross products.

3*81 = 9b

243 = 9b

Divide each side by 9

243/9 =9b/9

27 =b

There are 27 boys

8 0
3 years ago
Right angled triangle calc: find c, a=38, b=22.99999
tekilochka [14]
A²+b²=c²
38²+22.99999²=c²
1,444+528.999540001=c²
1,972.9995400001=c²
\sqrt{1,972.9995400001}=c
44.418459451=c
8 0
3 years ago
7+2/c in a word phrase <br> for the algebraic equation
Olin [163]

Answer:

Seven plus 2 divided by a number

Step-by-step explanation:

I think thats what u meAn

4 0
3 years ago
Kurt has a collection of 155 United States and Canadian stamps. He has 1.5 times as many United States stamps as Canadian stamps
stealth61 [152]

Kurt has 93 United States stamps in his collection

Step-by-step explanation:

The given is:

  • Kurt has a collection of 155 United States and Canadian stamps
  • He has 1.5 times as many United States stamps as Canadian stamps

We need to find how many United  States stamps Kurt has in his collection

Assume that kart has x Canadian stamps

∵ kart has x Canadian stamps

∵ He has 1.5 times as many United States stamps as Canadian stamps

- That means the number of United States stamps is 1.5 times

   the number of the Canadian stamps

∴ The number of the United States stamps = 1.5 x

∵ Kurt has a collection of 155 United States and Canadian stamps

- Add the two numbers of stamps and equate the answer by 155

∴ x + 1.5 x = 155

- Add like terms

∴ 2.5 x = 155

- Divide both sides by 2.5

∴ x = 62

∵ The number of United States stamps = 1.5 x

∴ The number of United States stamps = 1.5(62)

∴ The number of United States stamps = 93 stamps

Kurt has 93 United States stamps in his collection

Learn more:

You can earn more about the simple equation in brainly.com/question/11306893

#LearnwithBrainly

5 0
3 years ago
the library plans to add 1,000 books to its collection if the library can fit 15 books on each foot o shelving will the library
goblinko [34]

Answer: The anwser is 300

Step-by-step explanation:

3 0
2 years ago
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