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3 years ago

What is the unit rate of 162 heartbeats in 60 seconds?

2 answers:

6 0

Hey friend!
You stuck?

In order to find the unit rate of 162 heart beats, you must use division.
162 ÷ 60 = 2.7 heartbeats per second. Therefore, your unit rate is 2.7.

Hope this helps mate! :)

svetoff [14.1K]3 years ago

4 0

162/60 = 2.7 heartbeats per second

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At a DBE lecture of 100 students, there are 29 women and 23 men. Out of these students, 4 are teachers and 24 are either men or

sukhopar [10]

Answer:

100-29=71

71-23=48

48/2=24

Therefore, 24-4=20

answer =20

Step-by-step explanation:

twenty teachers are the one attending the the lectures

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3 years ago

31/8 as a mixed number?

Katyanochek1 [597]

$\frac{31}{8}=\frac{24}{8}+\frac{7}{8}=3+\frac{7}{8}=\boxed{3 \frac{7}{8}}$

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3 years ago

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Compare adding unlike fractions and adding like fractions

muminat

Answer:

We just add numerators and rewrite denominator.

Adding unlike dominators:

We need to find the same denominators. You need to find the least common multiple (LCM) of the two denominators.

Step-by-step explanation:

You mean unlike denominators and like denominators.

Adding like dominators: We just add numerators and rewrite denominator :

Example : $\frac{1}{4} +\frac{2}{4}=\frac{1+2}{4} =\frac{3}{4}$

Adding unlike dominators:

We need to find the same denominators. You need to find the least common multiple (LCM) of the two denominators.

For example :

$\frac{1}{5}+\frac{3}{4}$

LCM for 5 and 4 is 20 : Now, divide by 5 and multiply by 1 for first fraction. 20 divide by 4 and multiply by 3 :

$\frac{1*4}{20} +\frac{3*5}{20}=\frac{4}{20} +\frac{15}{20}=\frac{19}{20}$

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3 years ago

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Evaluate the function rule for the given value. Y=12×3^x for x=-2

Alinara [238K]

Answer:

Y = 4/3

Step-by-step explanation:

Solve for Y:

3 Y = 4

Hint: | Divide both sides by a constant to simplify the equation.

Divide both sides of 3 Y = 4 by 3:

(3 Y)/3 = 4/3

Hint: | Any nonzero number divided by itself is one.

3/3 = 1:

Answer: Y = 4/3

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3 years ago

zhuklara [117]

Answer:

A dilation factor of 1 over 2

Step-by-step explanation:

The smaller polygon is half the size of the original polygon

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