Ask question

Ask question

All categories

3 years ago

7

for every girl taking a material arts class there are 3 boys taking the same class if there are 236 students at the school predi

ct how many of them are boys

2 answers:

pashok25 [27]3 years ago

6 0

Trying to get 3:1
Divide 236 by four=59
Then times 59 by 3
The ratio now is 177:59
3:1

sergij07 [2.7K]3 years ago

6 0

Let x be the number of girls and y the number of boys

1st equation: x + y = 236

But for each y(boy), there 3x(girls)

2nd equation: y = 3x

Now solve :

|x + y = 236
| y = 3x

|x + y = 236
|- 3x + y = 0

You'll find x(girls) = 59 and y(boys) = 177

You might be interested in

1/5 (4-3x) = 1/7 (3x - 4) pls solve

natulia [17]

$\huge \boxed{\mathfrak{Question} \downarrow}$

$\large\sf\frac{1}{5} (4 - 3x) = \frac{1}{7} (3x - 4) \\$

$\large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}$

$\frac{1}{5} (4 - 3x) = \frac{1}{7} (3x - 4) \\$

Use the distributive property to multiply 1/5 by 4-3x.

$\frac{1}{5}\times 4+\frac{1}{5}\left(-3\right)x=\frac{1}{7}\left(3x-4\right) \\$

Multiply 1/5 and 4 to get 4/5.

$\frac{4}{5}+\frac{1}{5}\left(-3\right)x=\frac{1}{7}\left(3x-4\right) \\$

Multiply 1/5 and -3 to get -3/5.

$\frac{4}{5}+\frac{-3}{5}x=\frac{1}{7}\left(3x-4\right) \\$

Use the distributive property to multiply 1/7 by 3x-4.

$\frac{4}{5}-\frac{3}{5}x=\frac{1}{7}\times 3x+\frac{1}{7}\left(-4\right) \\$

Multiply 1/7 and 3 to get 3/7 & 1/7 × -4 to get -4/7.

$\frac{4}{5}-\frac{3}{5}x=\frac{3}{7}x-\frac{4}{7} \\$

Subtract $\frac{3}{7}x\\$ from both sides.

$\frac{4}{5}-\frac{3}{5}x-\frac{3}{7}x=-\frac{4}{7} \\$

Combine $-\frac{3}{5}x\\$ and $-\frac{3}{7}x\\$ to get $-\frac{36}{35}x\\$ .

$\frac{4}{5}-\frac{36}{35}x=-\frac{4}{7} \\$

Subtract 4/5 from both sides.

$-\frac{36}{35}x=-\frac{4}{7}-\frac{4}{5} \\$

The least common multiple of 7 and 5 is 35. Convert -4/7 and 4/5 to fractions with denominator 35.

$-\frac{36}{35}x=-\frac{20}{35}-\frac{28}{35} \\$

Because $-\frac{20}{35} \\$ and $\frac{28}{35}\\$ have the same denominator, subtract them by subtracting their numerators.

$-\frac{36}{35}x=\frac{-20-28}{35} \\$

Subtract 28 from -20 to get -48.

$-\frac{36}{35}x=-\frac{48}{35} \\$

Multiply both sides by $-\frac{35}{36}\\$ , the reciprocal of $-\frac{36}{35}\\$ .

$x=-\frac{48}{35}\left(-\frac{35}{36}\right) \\$

Multiply $-\frac{48}{35}\\$ by $-\frac{35}{36}\\$ by multiplying the numerator by the numerator and the denominator by the denominator.

$x=\frac{-48\left(-35\right)}{35\times 36} \\$

Carry out the multiplications in the fraction $\frac{-48\left(-35\right)}{35\times 36}\\$ .

$x=\frac{1680}{1260} \\$

Reduce the fraction 1680/1260 to its lowest terms by extracting and cancelling out 420.

$\huge \boxed{ \boxed{ \bf \: x=\frac{4}{3} \approx \: 1.33}}$

3 0

3 years ago

Read 2 more answers

Solve for f: f/5 = -8 F=?

rjkz [21]

Answer:

f = -40 your welcome

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

8 (3x-y)<br> what is the answer

lesantik [10]

Answer:

24x-8y

Step-by-step explanation:

8 times 3x is 24x and 8 times y is 8y

8 0

3 years ago

Read 2 more answers

when 5 is subtracted from 3 times number the result greater than 6 .find the least whole number that satisfied the statement

Alexandra [31]

Answer:

4

Step-by-step explanation:

Let x be a number.

The statement can be interpreted as:

5 is subtracted <u>from</u> a number : x - 5

3 times a number : 3x

A number is greater than 6 : x > 6
When 5 is subtracted <u>from</u> 3 times a number, the result is greater than 6 : 3x - 5 > 6

And then we simplify 3x - 5 > 6:

3x - 5 > 6
3x > 11
x > 11/3
x > 3.666...

To get the smallest whole number satisfying the inequality above, we can take the "ceiling" of 3.66 which is 4.

Note:

The ceiling of a number is the nearest integer (or in this case, nearest whole number) of a number. It can be denoted by ceil(x).

For example, the ceiling of 0.1 is 1. The ceiling of 5 is 5 since 5 itself is a integer.

3 0

4 years ago

PLEASE HELP ASAP - ILL GIVE BRAINLEST<br><br> GIVE THE WORK FOR IT TP PELASEE!! and 20 points

iragen [17]

Answer:

Step-by-step explanation:

Hope this helps u !!

7 0

3 years ago