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3 years ago

18 students at woodworth school. 1/2 as many girls as boys. how many girls

Mathematics

2 answers:

Ganezh [65]3 years ago

8 0

9 girls and 9 boys equals 18 students

alex41 [277]3 years ago

5 0

To solve this problem, let's write what we know:

18 students.

1/2 as many girls as boys.

So however many girls they have, there will be twice as many boys.

Let's try it out:

If there were 9 girls, there would be 18 boys, and a total of 27 students. That's too much.

If there were 4 girls, there would be 8 boys, and a total of 12 students. That's not enough.

Can you see a pattern? Try one more.

If there were 6 girls, there would be 12 boys, and a total of 18 students. Perfect!

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Answer:

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Let's look at each part of the equation. We need to first convert the inches to feet then multiply it by 60 to get per hour.
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3 years ago

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3 years ago

The number is three digits, the number is even, the tens digit is half the hundreds digit, the sum of the digit is 14 what is th

ser-zykov [4K]

Let x represent the digit in the hundreds place, y represent the digit in the tens place, and z represent the digit in the ones place. What do we know about each digit?

x: twice y (2, 4, 6, or 8)

y: half of x (1, 2, 3, or 4)

z: an even number (0, 2, 4, 6, or 8).

The sume of the digits is 14. So, x + y + z = 14

Choose one of the digits and look at your options (if any).

when x=2, then y = 1, which means z has to be 11 (NOT VALID)

when x=4, then y = 2, which means z has to be 8 (428 works!)

For fun, let's see if any other numbers work:

when x=6, then y = 3, which means z has to be 5 (NOT VALID)

when x=8, then y = 4, which means z has to be 2 (842 works!)

Answer: 428 and 842 both work

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3 years ago

Which expression is equivalent<br>HELP ME PLEASE

aalyn [17]

Answer:

the 4th option is correct

Step-by-step explanation:

$xy^{2/9}$ Original expression

$x(y^{2})^{1/9}$ Split up the exponent

$x(\sqrt[9]{y^{2} } )$ The 1/9 of an expression is the same thing is the 9th root of the expression.

7 0

3 years ago