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2 years ago

A cyclist travels 12 miles in 45 minutes. What is his average speed in mph?

Mathematics

2 answers:

gizmo_the_mogwai [7]2 years ago

4 0

Answer: 16 mph

Step-by-step explanation: To get speed in mph.

Divide the miles by the time. First we can change minutes to hours.

45/60 = 3/4 hour

12 divided by 3/4 hour is 12 ÷ 3/4

Invert the denominator and multiply:

12 × 4/3

16 mph

barxatty [35]2 years ago

3 0

Pretty sure it is 16 mph

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An electric bulb is sold in a box measuring 5 cm by 4 cm by 4 cm. If the shopkeeper receives them in a carton measuring 50 cm by

katen-ka-za [31]

Answer:

250

Step-by-step explanation:

Bulb box and carton both are of cuboidal shape.

For bulb box the dimensions are:

l = 5 cm, w = 4 cm, h = 4 cm

$V_{Bulb\: box} =lwh$

$\implies V_{Bulb\: box} =5(4)(4)$

$\implies V_{Bulb\: box} =80\: cm^3$

For Carton the dimensions are:

l = 50 cm, w = 20 cm, h = 20 cm

$V_{Carton} =lwh$

$\implies V_{Carton} =50(20)(20)$

$\implies V_{Bulb\: box} =20,000\: cm^3$

To find the number of bulbs packed in the carton, divide the $V_{Carton}$ by $V_{Bulb\: box}$

$Number \:of \:bulbs =\frac{V_{Carton}}{V_{Bulb\: box}}$

$\implies Number \:of \:bulbs =\frac{20,000}{80}$

$\implies Number \:of \:bulbs = 250$

So, 250 bulbs will be packed in one carton.

3 0

1 year ago

dentify all of the following solutions of square root of x minus 8 end root plus 8 equals x. (1 point)

viva [34]

Answer:gh

Step-by-step explanation:

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2 years ago

Question ok iterations help would be greatly appreciated!

Alexandra [31]

your answer would be A. I would hope this is right

6 0

2 years ago

Obtain the general solution of y ln x ln y dx + dy = 0

oksano4ka [1.4K]

Dy/dx = -y inx iny

(y in x in y) dx + dy = 0

(y in x in y ) dx = - dy

(in x )dx = - (1/ y in y) dy

you just need to integrate both sides

Hope this helps

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3 years ago

What is the surface area of a tank that has a length of 30 feet, a width of 15 feet?

Lady bird [3.3K]

Answer:

450

Step-by-step explanation:

Multiply the length (30) by the width (15)

30x15=450

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2 years ago