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fomenos
3 years ago
12

PLEASE HELPPPPPP MEEEEEEE!​

Mathematics
2 answers:
Juliette [100K]3 years ago
7 0

Answer:

boys

320/15=21.33 or 21 1/3x4=85 1/3

girls

14.25x3=42.75 or 42 3/4

the total combination of boys and girls

3/4+1/3=9/12 and 4/12=1 1/12+85+42= 128 1/12

Tju [1.3M]3 years ago
6 0

Answer:

124 students

Step-by-step explanation:

Girls participating in the exercise

4/15 x 285 = 76

Boys participating in the exercise

3/20 x 320 = 48

Total students participating

76 + 48 = 124

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4 years ago
Subtract - 8 from 18.<br> The answer is
marissa [1.9K]

Answer:

10

Step-by-step explanation:

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3 years ago
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8 0
3 years ago
Evaluate the expression -7 1/4x + 3 5/8 for x= -4
Misha Larkins [42]

Answer:

32 5/8 (or 32 and 5/8)

Step-by-step explanation:

Okay, so this problem is asking for us to solve this problem with the substitution of a variable: x = -4. Before we fully solve this problem, we need to replace all of those x variables with -4 so that it is easier to solve.

-7 1/4(-4) + 3 5/8.

To make this problem even easier to solve, let's turn these mixed numbers into improper fractions. To do this, multiply the denominator by the whole number. Then add the numerator to this number. The new number that you just got is now your new numerator for this number.

-29/4(-4) + 3 5/8.

Repeat the last step to turn the other mixed number into an improper fraction.

-29/4(-4) + 29/8.

Now let's multiply that -4 by 29/4. Because a whole number technically has a denominator of 1, we can now set up the next part of our problem. (The symbol * means multiplication since we can't use x since it is already being used as a variable in this equation.)

(-29/4 * -4/1) + 29/8.

29 + 29/8.

Now to solve the rest of this problem, let's convert the whole number of 29 so that it has a denominator of 8. This is that these two numbers are addable.

<u>29</u> x <u>8</u> = <u>232</u>

1   x 8 =   8

Now these numbers are addable. So:

232/8 + 29/8 = 261/8 = 32 5/8.

I hope that this helps.

4 0
3 years ago
Suppose the population of a town is 15,200 and is growing 2% each year. Write an equation to model the population growth. Predic
elena55 [62]
The population 10 years later will have increased by 3,040,  making the population 18,240.
Hope this helps.<span />
7 0
3 years ago
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