Colins class had 15 girls and 12 boys. If there were 4 boys what would be an equivalent ratio of boys and girls?

Mathematics

1 answer:

Leni [432]3 years ago

8 0

Answer:

there would be 5 girls, boys 1; girl 1.25

Step-by-step explanation:

there are 1.25 girls for every boy

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Why is 5.1 a rational number

Ainat [17]

Answer:

5.1 can be written as 51/10 (the quotient of the integers 51 and 10. So it is a rational number

Step-by-step explanation:

Recall that a rational number is a number that can be written as the quotient of two integer numbers.

In particular the number 5.1 can be written as 51/10 (the quotient of the integers 51 and 10. So it is a rational number.

4 0

3 years ago

Solve (x + 9)² = 25.

ollegr [7]

The answer is x = -4.
Applying the square root property of equality basically means that we need to take the square roots of both sides.

$\sqrt{(x+9)^{2} }= \sqrt{25}$

Which turns into: $x+9=5$

Then we can isolate x by subtracting 9 from both sides: $x=-4$