Why do you think rates are usually written as unit rates

1 answer:

5 0

It's simpler and clearer to write unit rates. For example, I averaged 59 miles per hour (59 mph) on this morning's drive back home. I could also state that I averaged 118 miles per 2 hours (which is mathematically equivalent).

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What is the value of this expression<br> when b = 5?<br> 6(26-4)

romanna [79]

Answer:

6(26-4)= 132

Step-by-step explanation:

There isn't any variable in the equation

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Measure of angle A = 5 X, measure of angle B = 2X, measure of angle C = 110 degrees

Alex17521 [72]

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A box contains 5 red balls, 6 white balls and 9 black balls. Two balls are drawn at

valina [46]

Answer:

$P(Same)=\frac{61}{190}$

Step-by-step explanation:

Given

$Red = 5$

$White = 6$

$Black = 9$

Required

The probability of selecting 2 same colors when the first is not replaced

The total number of ball is:

$Total = 5 + 6 + 9$

$Total = 20$

This is calculated as:

$P(Same)=P(Red\ and\ Red) + P(White\ and\ White) + P(Black\ and\ Black)$

So, we have:

$P(Same)=\frac{n(Red)}{Total} * \frac{n(Red) - 1}{Total - 1} + \frac{n(White)}{Total} * \frac{n(White) - 1}{Total - 1} + \frac{n(Black)}{Total} * \frac{n(Black) - 1}{Total - 1}$