2 years ago

[(25 - 11) + (15-9)] *5

Mathematics

2 answers:

Vitek1552 [10]2 years ago

8 0

The answer is 75. This just needs to be at least 20 characters long lol

Katarina [22]2 years ago

7 0

The answer would be 75
Explanation:

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Simplify the expression

kozerog [31]

10[(6 + 4) / 2]
10[10/2]
10 * 5
50 <==

8 0

2 years ago

A human heart beats an average of 80 beats per minute.How many beats is this in an hour?express your answer in scientific notati

nlexa [21]

Answer:

4,800

Step-by-step explanation:

Sorry I don't know how to explain it scientifically but I know how to do the calculations

1) Theres 60 minutes in an hour

2) 80x60= 4,800 beats

4 0

3 years ago

A researcher obtained M = 27 for a sample of n = 36 scores selected from a population with µ = 30 and σ = 18. This sample mean c

dusya [7]

Answer:

True

Step-by-step explanation:

Given that:

M = 27, sample of n = 36 scores, µ = 30 and σ = 18.

The z score is used in statistics to determine by how many standard deviations the raw score is above or below the mean. If the z score is positive, the raw score is greater than the mean and if the z score is negative the raw score is less than the mean. The z score is given as:

$z=\frac{x-\mu}{\sigma}$