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Crazy boy [7]
3 years ago
11

Solve the given inequality and graph the solution on a number line -x/2 + 3/2 < 5/2

Mathematics
1 answer:
Daniel [21]3 years ago
3 0
The correct answer is x>-2.  The graph is attached.

To solve this:

-x/2 + 3/2 < 5/2

Subtract 3/2 from both sides:
-x/2 + 3/2 - 3/2 < 5/2 - 3/2
-x/2 < 2/2
-x/2 < 1

Multiply both sides by 2:
(-x/2)*2 < 1*2
-x < 2

Divide both sides by -1:
-x/-1 < 2/-1

Remember to flip the the symbol since you divide both sides by a negative:
x > -2

To graph the inequality, we draw a number line, making sure we have -2 on it.  We circle -2 and leave it open, since it is strictly greater than.  Then we shade the line to the left.

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A basketball player makes 70% of the free throws he shoots. Suppose that he tries 15 free throws.
Volgvan

Answer:

a.) .95

b.) The expected number of baskets is 10.50.

c.) 1.7748

Step-by-step explanation:

a.) This is a binomial distribution as there are two possibilities: makes a free throw or doesn't. This means that you can use the binomial function on a calculator to figure out the answer. Use the binomial CDF function on a calculator and the number of trials=15, probability of success=.7, lower bound=0, upper bound=7. Once you have evaluated the answer, .0500, it will need to be subtracted from1, as you want everything not included in this section. The answer to part a is thus 1-.0500=.95.

b.) The expected value is calculated by taking the total number of shots and multiplying it by the probability of making the shot: 15×.7=10.5 shots.

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