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3 years ago

15% of 90 hours 15% of 90 hours

2 answers:

5 0

Okay, to do this, we need to do the Cross-Product Method. On one side, it will be x/90, and the other side will be 15/100. So, after we multiply 90 by 15, and also multiply 100 by x, out new equation is going to be 100x = 1350. After dividing 1350 by 100, we get 13.5

Answer: 15% of 90 hours is 13.5 hours.

Blizzard [7]3 years ago

4 0

Answer:

15 percent of 90 hours = 13.5 hours

What is 15% of 90?

Y is 15% of 90

Equation: Y = P% * X

Solving our equation for Y

Y = P% * X

Y = 15% * 90

Converting percent to decimal:

p = 15%/100 = 0.15

Y = 0.15 * 90

Y = 13.5

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Please help! (Pythagorean theorem stuff)

vova2212 [387]

Answer:

Pretty sure its 6

Step-by-step explanation:

The hypotenuse is double the length of the shortest side

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2 years ago

A large chocolate shake uses 8/9 of a pint of milk if the medium shake takes 1/7 of the amount of milk the large uses how much d

Dvinal [7]

Answer:

1/2 probaly

Step-by-step explanation:

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3 years ago

HELP ASAP FOR BRAINLIEST: The time required to finish a test in normally distributed with a mean of 60 minutes and a standard de

liubo4ka [24]

Answer:

The z-score = -3.7 and p (-3.7) = 0.00011 or 0.011%

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Mean of time to finish a test = 60 minutes

Standard deviation of time to finish a test = 10 minutes

Time that a student finishes the test = 23 minutes

2. What is the z-score for the student?

z-score = (Time that a student finishes the test - Mean of time to finish a test)/Standard deviation of time to finish a test

Replacing with the real values:

z-score = (23 -60)/10 = -37/10 = -3.7

z-score = -3.7 and p (-3.7) = 0.00011 or 0.011%

4 0

3 years ago

The grades of a statistics midterm are normally distributed with a mean of 70 and a standard deviation of 2. Without using a cal

butalik [34]

Answer:

.13.5%

Step-by-step explanation:

The probability that a student will receive a grade between 74 and 76 is calculated as follows:

µ+2σ=70+2(2)=70+4=74

µ+3σ=70+3(2)=70+6=76

From the above empirical rule it can be observed that 13.5% of observations fall in between 1 and 2 standard deviations above the mean.

Therefore, the probability that a student will receive a grade between 74 and 76 is 13.5%.

Thus, the correct options is A.13.5%.

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3 years ago

Bob's heart rate is 72 beats per

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1: 13,148,719.2 beats

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3: 7 days, 5 hrs, and 2 minutes

Hope this helped. Have a good day~

8 0

3 years ago