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2 years ago

If a = b, then a - c ____ equals b - c. Select one: a. always b. sometimes c. never

Mathematics

1 answer:

FromTheMoon [43]2 years ago

8 0

Always

a=b

subtract c from each side

a-c = b-c

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3 years ago

The two sides of a right triangle that are not the hypotenuse are called

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3 years ago

Sinx + cos2x + sin3x + 1 =0

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3 years ago

A college football coach has decided to recruit only the heaviest 15% of high school football players. He knows that high school

Alla [95]

Answer:

The coach should start recruiting players with weight 269.55 pounds or more.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 225 pounds

Standard Deviation, σ = 43 pounds

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

Formula:

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

We have to find the value of x such that the probability is 0.15

$P( X > x) = P( z > \displaystyle\frac{x - 225}{43})=0.15$

$= 1 -P( z \leq \displaystyle\frac{x - 225}{43})=0.15$

$=P( z \leq \displaystyle\frac{x - 225}{43})=0.85$

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

$P(z < 1.036) = 0.85$

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Thus, the coach should start recruiting players with weight 269.55 pounds or more.

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3 years ago

Calvin saved 1/4 of the price of the car he wanted to buy which fraction is 1/4 A 2/12

Wewaii [24]

Answer:

1/4 = 5/20

Step-by-step explanation:

1/4 = 5/20

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3 years ago

Read 2 more answers