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1/ A regulation for riding a certain amusement park ride requires that a child be between 30 inches and 50 inches tall. Which of the following inequalities can be used to determine whether or not a child's height h satisfies the regulation for this ride?

A) | h-10 | < 50
B) | h-20 | < 40
C) | h-30 | < 20
D) | h-40 | < 10
E) | h-45 | < 5

2/ A measuring cup contains 1/5 of a cup of orange juice. It is then filled to the 1 cup mark with a mixture that contains equal amounts of orange, grapefruit , and pineapple juices. What fraction of the final mixture is orange juice?

Please explain as you're solving. Thank you.

2007-09-14 11:30:05 · 3 answers · asked by Anonymous in Science & Mathematics Mathematics

3 answers

1/ All equalities are good except E which will not work for
short person. Just plug in 49.5" and 30.5" as a test.

2/ 44% Just work in ounces.

2007-09-14 11:53:05 · answer #1 · answered by ? 5 · 0 0

D) |h-40| < 10
40 is halfway between 30 and 50.
So The absolute value is the distance from 40 which could be +/- 10.

4/5 of a cup divided by 3 is 4 /15 of a cup.
So 1/5 +4/15 =3/15 +4/15 = 7/15 of a cup of OJ

2007-09-14 18:44:34 · answer #2 · answered by ironduke8159 7 · 0 0

plug numbers in. use numbers that fit the requirements (like 40 or 45) and numbers that do not (like 60 or 70) to check for right answer

2007-09-14 18:43:47 · answer #3 · answered by Ambino 4 · 0 0

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