3 years ago

20% of a class are boys and 20 are girls. What's the Ratio of girls to boys?

Mathematics

2 answers:

Andrei [34K]3 years ago

3 0

20:20 since the number of boy is even to the girls

storchak [24]3 years ago

3 0

20 are girls 5 are boys and 25are students

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Answer:

the answer would be: 5-13c

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3 years ago

ericas mother saved her quarters and dimes .she counted 48 coins with a value of $7.50.how many quarters and dimes were there？

katrin2010 [14]

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Read 2 more answers

Evaluate each expression if r= −3, s=4, and t= −7.

saul85 [17]

Answer:

a. $5$

b. $-1$

c. $132$

Step-by-step explanation:

Given:

$r =-3$ , $s = 4$ and $r = -7$

$\sqrt{s} +|r| \\ \sqrt{4} +|-3| \\ 2 +3 \\ 5$

$\frac{s -r}{t} \\ \frac{4 -(-3)}{-7} \\ \frac{4 +3}{-7} \\ \frac{7}{-7} \\ -1$

$2s^3 +r -t \\ 2(4)^3 +(-3) -(-7) \\ 2(64) -3 +7 \\ 128 -3 +7 \\ 132$

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3 years ago

Silvie states that the sum of a rational number and an irrational number is sometimes rational and sometimes irrational. Which s

RideAnS [48]

Answer:

A) Silvie is incorrect; the sum of a rational number and an irrational number is always irrational

Step-by-step explanation:

The concept of adding rational and irrational numbers states that the result will always be irrational.

Take for instance the addition of 4.5 and 3.142857

4.5 is a rational number because it can easily be expressed in fractions while 3.142857 is irrational because it can't be expressed as a simple fraction.

The addition of these two numbers gives 7.642857

7.642857 is an irrational number.

Similarly, any sum of two numbers (rational and irrational) will always result in irrational number.

Hence, Silvie is incorrect.

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3 years ago

What is n? 12^2+n^2=(n+2)^2

Law Incorporation [45]

Answer:

n=35

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable

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3 years ago