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3 years ago

13

The number of donuts produced by a machine is directly proportional to the time the machine runs . The machine produces 380 donu

ts in 20 minutes . How many donuts can the machine produce after running for 45 minutes?

1 answer:

mrs_skeptik [129]3 years ago

5 0

Answer:

855 donuts

Step-by-step explanation:

380/20 = 19 donuts per minute

19 × 45 = 855

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6 more than the product of a number x and 5 is 21

fgiga [73]

Answer:

x = 3

Step-by-step explanation:

6 <em>+</em><em> </em><em>5</em><em>x</em><em> </em>= 21

<em>5</em><em>x</em><em> </em><em>=</em><em> </em><em>1</em><em>5</em>

<em>x</em><em> </em><em>=</em><em> </em><em>3</em>

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3 years ago

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Kyle is practicing for a 3-mile race. His normal time is 23 minutes 25 seconds. Yesterday it took him only 21 minutes 38 seconds

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3 years ago

The volume of a cylinder can is 1.54 litre and area of base is 77cm^2 Find its height

goblinko [34]

Answer:

The height is 20 cm.

Step-by-step explanation:

First, we have to know that the volume formula is V = πr²h and the base area of cylinder is a circle. So we can let πr² be 77 cm² . Then we have to substitute the following values into the formula :

$v = 1.54 \: l$

$v = 1540 \: {cm}^{3}$

$v = \pi \times {r}^{2} \times h$

Let πr² be 77,

Let v be 1540,

$1540 = 77 \times h$

$77h = 1540$

$h = 1540 \div 77$

$h = 20 \: cm$

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3 years ago