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3 years ago

10

Write an equation that shows the relationship 64% of y is 40. PLEASE HELP

2 answers:

DerKrebs [107]3 years ago

7 0

Answer:

64/100=40/y

Step-by-step explanation:

We use the simple equation of finding percentages, which would be the percentage (64) over 100 percent, as this is our total. If 64 percent of y equals 40, then the equation is 64/100=40/y. To solve for y, multiply 100 x 40= 4000, then divide by 64 to get the answer. Y=62.5

White raven [17]3 years ago

4 0

Answer:

$0.64*y = 40$

Step-by-step explanation:

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Need help with this problem.

tigry1 [53]

Answer:

C) $-\frac{47}{49}$

Step-by-step explanation:

By the cos double angle formula, we know $\cos(2\theta)=2\cos^2\theta-1.$ Substituting $\cos \theta$ into the formula, we get

$\cos(2\theta)=2(-\frac{1}{7})^2-1\\~~~~~~~~~~=\frac{2}{49}-1\\~~~~~~~~~~=\boxed{-\frac{47}{49}}$ .

The answer is C.

5 0

2 years ago

Among 21- to 25-year-olds, 29% say they have driven while under the influence of alcohol. Suppose that three 21- to 25-year-olds

Sophie [7]

Answer:

P(3) = 0.0244

P(3) = 2.44%

the probability that all three selected have driven while under the influence of alcohol is 2.44% or 0.0244

Step-by-step explanation:

Given;

The probability that they have driven while under the influence of alcohol is;

P = 29% = 0.29

the probability that all three selected have driven while under the influence of alcohol is;

P(3) = P × P × P

P(3) = 0.29 × 0.29 × 0.29

P(3) = 0.024389

P(3) = 0.0244

P(3) = 2.44%

the probability that all three selected have driven while under the influence of alcohol is 2.44% or 0.0244

5 0

3 years ago

10 different names are put into a computer and one of the names is Colin. On a Saturday the computer chooses 2 names at random.

aivan3 [116]

Answer:

19/100

Step-by-step explanation:

8 0

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Mark is in training for a bicycle race. He needs to ride 50 kilometers a week as part of his training. He rode 18.23 kilometers

kirill115 [55]

the answer is B-about 18km

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3 years ago

Translate the following into algebraic form: The difference of forty-seven and a number

JulsSmile [24]

Answer:

Number - 47

Step-by-step explanation:

difference means subtract

Number - 47

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3 years ago