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4 years ago

8

Which equation can be used to answer the question below and a marked 15% of the emails in her inbox as important if she has 180

emails in her inbox inbox how many did she mark as important

1 answer:

Gnom [1K]4 years ago

3 0

Answer:

n = 0.15(180)

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Albert uses 8 liters of water to wash a car and he spills an additional liter per 2 car. What would be the total amount of water

meriva

36 liters
8 • 4 (8 liters for 4 cars)
2 • 2 (2 liters spilled for 2 sets of 2 cars)

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3 years ago

Chris rode his bike along the same route everyday for 60 days. He logged that he had gone exactly 127.8 miles. How many miles di

blagie [28]

127.8/60 = 2.13

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4 years ago

Which of the following expressions describes the solution to -2x < -10

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3 years ago

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:

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

<em>Note that: 1 is subtracted because it is a probability without replacement</em>

$P(Same)=\frac{5}{20} * \frac{5 - 1}{20- 1} + \frac{6}{20} * \frac{6 - 1}{20- 1} + \frac{9}{20} * \frac{9- 1}{20- 1}$

$P(Same)=\frac{5}{20} * \frac{4}{19} + \frac{6}{20} * \frac{5}{19} + \frac{9}{20} * \frac{8}{19}$

$P(Same)=\frac{20}{380} + \frac{30}{380} + \frac{72}{380}$

$P(Same)=\frac{20+30+72}{380}$

$P(Same)=\frac{122}{380}$

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

4 0

3 years ago

Aliyah had some candy to give to her four children. She first took ten pieces for herself and then evenly divided the rest among

9966 [12]

Answer:

Step-by-step explanation:

Each child received two pieces.

So total pieces received by 4 children = 4*2 = 8

Total pieces = 10 + 8 = 18

3 0

3 years ago

Read 2 more answers