Answer:
85° and 95°
Step-by-step explanation:
A linear pair of angles sum to 180° , then
3x + 10 + 4x - 5 = 180
7x + 5 = 180 ( subtract 5 from both sides )
7x = 175 ( divide both sides by 7 )
x = 25
Then
3x + 10 = 3(25) + 10 = 75 + 10 = 85°
4x - 5 = 4(25) - 5 = 100 - 5 = 95°
Answer:
She will have 6 pieces of ribbon
Step-by-step explanation:
She will have 0.64 inches of ribben left over
Twelve point nine plus eight equals twenty point nine (12.9 + 8 = 20.9)
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Answer:
sales tax= 9 %
Step-by-step explanation:
sales tax= cost x %tax
38.70 = 430 x %tax
%tax = 38.7/430 = 0.09 = 9 %
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19) 3/8
24 - 15 = 9
9/24 = 3/8
20) 3/28
8 total people running. We want to know the probability that both the president and vice-president are girls, so we have to assume that the president is a girl first.
3/8 x 2/7 = 6/56 = 3/28
21) Travis should play the game where he has to pick either an A or B out of a hat which contains letters A, B, C, D, and E. The probability of him drawing an A or B and winning is 2/5, or 0.4. If he plays the other game, then the probability of him winning is only 1/3, or 0.33.
Probability of rolling a 2 or 3 on a die = 2/6 = 1/3 (0.33)
Probability of picking an A or B = 2/5 (0.4)
