Solve the system of equations x - 2y = 3 and 7x + 6y = -45 by combining the equation

1 answer:

3 0

I know some of those really going to mathematics two weeks and all that stuff I’m gonna come bring him right now he’s gonna answer 783

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4. Gordon worked 621 hours in the last six months. He worked the same number

Sunny_sXe [5.5K]

Answer:

103.5 hours

Step-by-step explanation:

621/6 = 103.5 hours each month

4 0

2 years ago

The probability of none will have high blood pressure if twenty percent of Americans age 25 to 74 have blood pressure .If 16 ran

andriy [413]

Answer:

The probability that none will have high blood pressure is 0.0281

Step-by-step explanation:

The correct question is as follows;

Twenty percent of Americans ages 25 to 74 have high blood pressure. If 16 randomly selected Americans ages 25 to 74 are selected, find each probablility. a. None will have high blood pressure

This is a binomial problem. We shall solve in that line

The probability of success is 20% or 0.2 [(Americans ages 25 to 74 have high blood pressure)] p = 0.2

The probability of failure q is thus 1-p = 1-0.2 = 0.8

The probability of none is thus;

P(X= 0) = 16C0 p^0 q^16

= 16C0 * 0.2^0 * 0.8^16 = 0.0281

8 0

3 years ago

A baseball player hit 73 home runs in a season. Of the 73 home runs, 25 went to right field, 25 went to right center field, 8

Elenna [48]

Answer:

A baseball player hit 73 home runs in a season.

Of the 73 home runs, 25 went to right field, 25 went to right center field, 8 went to center field, 10 went to left center field, and 5 went to left field.

(a) the probability that a randomly selected home run was hit to left center field = $\frac{10}{73}=0.1369$ = 13.69%