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Mathematics

1 answer:

ratelena [41]2 years ago

3 0

Hi, what exactly is the question ?

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Simplify:<br> 4-5-9<br> PLEASE HURRY!!! THANK U

Masja [62]

Answer:

The answer is -10.

Step-by-step explanation:

4 - 5 - 9

-1 - 9

-10

6 0

2 years ago

Read 2 more answers

The ratio of boys to girls in the Science Club is 3.5. If there are 60 girls, how many boys are there?

liubo4ka [24]

Answer:

36 boys

Step-by-step explanation:

Please write the ratio as 3:5 or as --------

Note that 3 + 5 = 8, so that the fraction of boys in the club is 3/8 and that of girls is 5/8.

How many are in the club altogether? Let this count be represented by c. Then (5/8)c = 60.

Multiplying both sides of this equation by (8/5), to isolate c, we get:

c = (8/5)(60) = 96. Thus, there are 96 Science students altogether.

3/8 of this number are boys. This comes out to (3/8)(96) = 36 boys.

We could also solve this problem in the following manner:

3 b

------ = ------- , where b represents the number of boys.

5 60

Then 5b = 180. Dividing both sides by 5, we get b = 180/5 = 36 boys

3 0

3 years ago

Rational numbers are numbers that can be written as the ______ of _____. What are the blanks?

BARSIC [14]

Answer:

rational numbers are numbers that can be written as the ratio of two integers

5 0

3 years ago

The length of a shadow of a tree is 9 ft. The distance from the top of the tree to the tip of the shadow is 16 ft. what is the h

Margarita [4]

So for this, you'll be using the pythagorean theorem to solve for the height.

$9^2+b^2=16^2$

Solve the exponents to get $81+b^2=256$

Subtract 81 on each side to get $b^2=175$

Square root each side, and your answer should be $b= \sqrt{175}$ or 13.23 ft