All categories

2 years ago

A copy machine makes 136 copies in 4 minutes and 15 seconds. How many copies does it make per minute?

Mathematics

1 answer:

Dahasolnce [82]2 years ago

8 0

Answer:

The copy machine makes 32 copies per minute.

Step-by-step explanation:

Given that a copy machine makes 136 copies in 4 minutes and 15 seconds, to determine how many copies does it make per minute, the following calculation must be performed:

15 seconds = 0.25 minutes

136 / 4.25 = X

32 = X

Therefore, the copy machine makes 32 copies per minute.

You might be interested in

Identify the equation of the line with the given slope and Y intercept,

Sveta_85 [38]

Answer:

y = 6x - 7

Step-by-step explanation:

We can use the equation y = mx + b as a guide to help us solve this problem

The variables are given in the problem, so we just need to replace them with their respective variables, which give us:

y = 6x - 7

8 0

2 years ago

Read 2 more answers

What is a FREAKIN ratios

Goryan [66]

The quantitative relation between two amounts showing the number of times one value contains or it’s contained within the other.

5 0

3 years ago

Read 2 more answers

In a school, 22% of the students are sixth graders. What is the probability that a randomly chosen student will not be a sixth g

svlad2 [7]

If 22% are sixth graders, then the rest must not sixths graders.

100% of the school - 22% sixth grades = 78% are not sixths graders

8 0

3 years ago

Heights of young adult women in the United States are approximately Normal with a mean of 64 inches and standard deviation 2.7 i

sweet-ann [11.9K]

Answer:

The proportion of all young adult women in the United States are taller than 6 feet(72 inches ) is

$P( X > 72) =0.0015233$

Step-by-step explanation:

From the question we are told that

The mean is $\mu = 64 \ inches$

The standard deviation is $\sigma = 2.7 \ inches$

Generally 6 feet is equivalent to 6 * 12 = 72 inches

Generally the proportion of all young adult women in the United States are taller than 6 feet(72 inches ) is mathematically represented as

$P( X > 72) = P(\frac{X - \mu }{\sigma } > \frac{72 - 64 }{ 2.7 } )$

$\frac{X -\mu}{\sigma } = Z (The \ standardized \ value\ of \ X )$

$P( X > 72) = P(Z > 2.963 )$

From the z-table

The area under the normal curve to the right corresponding to 2.963 is

$P(Z > 2.963 ) = 0.0015233$

=> $P( X > 72) =0.0015233$

3 0

2 years ago

A medical test has been designed to detect the presence of a certain disease. Among people who have the disease, the probability

Oksi-84 [34.3K]

Answer:

a) 0.497

b) 0.0047

Step-by-step explanation:

a) The probability that the person actually has the disease

$\frac{0.06 *0.93}{0.06 *0.93 + 0.06 *0.94} = 0.497$

b) The probability that the person actually does have the disease $\frac{0.06 *0.07}{0.06 *0.06 + 0.93 *0.94} = 0.0047$

6 0

3 years ago