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IgorLugansk [536]
3 years ago
12

The red race car drives 21 miles in 15 minutes. Find the miles per hour

Mathematics
1 answer:
irina [24]3 years ago
3 0

Answer:

1.4mph

Step-by-step explanation:

21 miles÷15minutes= 1.4 miles per hour

1.4 miles per hour ×15 minutes= 21miles

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The number of mosquitoes at the beach has increased by 50% every year since 2012. In 2012, there were 2,500 mosquitoes. How many
xxTIMURxx [149]

Answer:

Step-by-step explanation:

2012 = 2500

2500 x .50 = 1250

2500 + 1250

2013 = 3750

3750 x .50 =

3750 + 1875

2014 = 5625

5625 x .50 = 2812.5

5625 + 2812.5

2015= 8437.5

8437.5 x .50 = 4218.75

8437.5 + 4218.75

2016= 12656.25

12656.25 x .50 = 6328.125

12656.25 + 6328.125

2017= 18984.375

18984.375 x .50 = 9492.1875

18984.375 + 9492.1875

2018= 28,476.5625‬

3 0
3 years ago
What errors are shown here? Check all that apply.
Inessa05 [86]

Answer:

-The arrows should be a length of 6

-The arrows should point in the negative direction

-The arrows should start at zero

Step-by-step explanation:

Hope this helps!

3 0
4 years ago
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Which inequality is equivalent to -4g>24
ValentinkaMS [17]

Answer:

look at picture above please

8 0
3 years ago
Help me please !!!will give brainliest
Pachacha [2.7K]

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1. C

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6 0
3 years ago
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An observation from a normally distributed population is considered "unusual" if it is more than 2 standard deviations away from
Liula [17]

Answer:

Step-by-step explanation:

Given that an observation from a normally distributed population is considered "unusual" if it is more than 2 standard deviations away from the mean. There are several contaminants that can harm a city's water supply. Nitrate concentrations above 10 ppm (parts per million) are considered a health risk for infants less than six month of age.

We can say 1.59 and 2.52 if taken average would be the mean

Mean = 2.01

The deviations on either side = 2.52-2.01 = 0.41

This can be taken as 2 std dev

So std dev  = 0.205

Hence we can take nitrate concentration is normal with mean = 2.01 and std deviation is 0.205

N(2.01, 0.205)

8 0
4 years ago
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