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A. Convert as indicated.
1) - 35°C to °F
2) 14°F to °C
B. Translate each into mathematical expression.
3) the number x doubled
4) the difference of a number x and eight
5) the average of two numbers x and y
6) thrice the sum of x and y
7) one-half the difference of x and y
C. Translate into words.
8) V⁶⁵
9) 45 + r = 90
10) 52 c = 156
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Answer:
A. Convert as indicated.
1) - 35°C to -31°F
= -35 × 1.8 + 32
= -63 + 32
= -31
2) 14°F to -10°C
= (14 - 32) ÷ 1.8
= -18 ÷ 1.8
= -10
B. Translate each into mathematical expression.
3) the number x doubled
Answer: 2x
4) the difference of a number x and eight
Answer: x-8
5) the average of two numbers x and y
Answer: x+y
6) thrice the sum of x and y
Answer: 3(x+y)
7) one-half the difference of x and y
Answer: 2/(x-y)
C. Translate into words.
8) V⁶⁵
Answer: v to the sixty fifth power
9) 45 + r = 90
Answer: The sum of 45 and r is 90
10) 52 c = 156
Answer: Fifty two multiplied by c is one hundred fifty six