All categories

3 years ago

A car's speed is 45 miles per hour. How far will it go in 4 hours and 20 minutes?

Mathematics

2 answers:

shusha [124]3 years ago

4 0

195 miles

45x4=180

45 divided by 3=15

180+15=195

bulgar [2K]3 years ago

4 0

45 x 4 = 180

60 (minutes in 1 hour) divided by 45 =.75 miles per minute

.75 multiplied by 20 = 15

Total 180 + 15 = 195 miles

Or 4hrs x 60min = 240min
240+20= 260 (convert all into minutes)

260 multiplied by .75=195

You might be interested in

The ages of 11 students enrolled in an on-line macroeconomics course are given in the following steam-and-leaf display:

blsea [12.9K]

Answer:

The standard deviation of the age distribution is 6.2899 years.

Step-by-step explanation:

The formula to compute the standard deviation is:

$SD=\sqrt{\frac{1}{n}\sum\limits^{n}_{i=1}{(x_{i}-\bar x)^{2}}}$

The data provided is:

X = {19, 19, 21, 25, 25, 28, 29, 30, 31, 32, 40}

Compute the mean of the data as follows:

$\bar x=\frac{1}{n}\sum\limits^{n}_{i=1}{x_{i}}$

$=\frac{1}{11}\times [19+19+21+...+40]\\\\=\frac{299}{11}\\\\=27.182$

Compute the standard deviation as follows:

$SD=\sqrt{\frac{1}{n}\sum\limits^{n}_{i=1}{(x_{i}-\bar x)^{2}}}$

$=\sqrt{\frac{1}{11-1}\times [(19-27.182)^{2}+(19-27.182)^{2}+...+(40-27.182)^{2}]}}\\\\=\sqrt{\frac{395.6364}{10}}\\\\=6.28996\\\\\approx 6.2899$

Thus, the standard deviation of the age distribution is 6.2899 years.

7 0

3 years ago

It is x miles from James City to Huntley and y miles from Huntley to Grover. How many miles is it from James City to Grover? To

OverLord2011 [107]

21.106 mi is the answer

6 0

3 years ago

If the sum of seven odd consecutive numbers is 231, find the middle number.

qaws [65]

This is your answer, good luck buddy

8 0

3 years ago

Read 2 more answers

Find the sum of -3x^2-x-10 and 10x^2+x-10

Jobisdone [24]

Answer:

7x^2-20

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Ur getting paid $360 per day.....get sick and leave after 1/5 of the day

zheka24 [161]

Answer:

You would earn $72 that day.

Step-by-step explanation:

$360 / 5 = $72

$72 * 5 = $360

Hope this helps!

8 0

3 years ago

Read 2 more answers