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2 years ago

Maggie's brother is 11 years younger than three times her age. The sum of their ages is 41.

Mathematics

1 answer:

brilliants [131]2 years ago

3 0

Answer:

Maggie is 13 years old.

Step-by-step explanation:

The explanation is attached.

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45% of what number is 27?

gtnhenbr [62]

45% of what number is 27

0.45x = 27
x = 27 / 0.45
x = 60 <== 45% of 60 = 27

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3 years ago

What number is between 1/1000 and 1/10000

Alex777 [14]

I believe the answer is D.

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3 years ago

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Suppose the weights of the Boxers at this club are Normally distributed with a mean of 166 pounds and a standard deviation of 5.

lesya [120]

Answer:

0.1994 is the required probability.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 166 pounds

Standard Deviation, σ = 5.3 pounds

Sample size, n = 20

We are given that the distribution of weights is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Standard error due to sampling =

$=\dfrac{\sigma}{\sqrt{n}} = \dfrac{5.3}{\sqrt{20}} = 1.1851$

P(sample of 20 boxers is more than 167 pounds)

$P( x > 167) = P( z > \displaystyle\frac{167 - 166}{1.1851}) = P(z > 0.8438)$

$= 1 - P(z \leq 0.8438)$

Calculation the value from standard normal z table, we have,

$P(x > 167) = 1 - 0.8006= 0.1994 = 19.94\%$

0.1994 is the probability that the mean weight of a random sample of 20 boxers is more than 167 pounds

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3 years ago

What is 3.82 to the nearest whole number

Klio2033 [76]

4 !!! Since you round up

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3 years ago

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a discounted concert ticket costs $14.50 less than the original price p.You pay $53 for a discounted ticket.Write an equation th

Ahat [919]

Answer:

$53.00 + $14.50

= 67.50

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-Adan

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4 years ago