1 The temperature of a substance is -29.9 F. The temperature decreases by 8.7 and then again by 17.8". Emilia writes two strategies to find the final temperature of the substance. Strategy 1: Evaluate the expression -30-8-17-0.1 1.5. Strategy 2: Evaluate the expression -29 8 17-1-0.4. Which TWO statements are TRUE? A. Evaluating -29.9 8.7- 17.8 is the same as evaluating -30-8-17-0.1 – 1.5, so Strategy 1 is correct. B. Evaluating -29.9-8.7- 17.8 is the same as evaluating -29 – 8-17 1-0.4, so Strategy 2 is correct. C. Strategy 1 would be correct if the -30 is replaced with -29. D. Strategy 2 would be correct if the I is replaced with 2. The final temperature of the substance is -56.4 F. E.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter1: Variables, Expressions, And Integers
Section1.6: Subtracting Integers
Problem 47E
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1 The temperature of a substance is -29.9 F. The
temperature decreases by 8.7 and then again by
17.8". Emilia writes two strategies to find the final
temperature of the substance.
Strategy 1: Evaluate the expression
-30-8-17-0.1 1.5.
Strategy 2: Evaluate the expression
-29 8 17-1-0.4.
Which TWO statements are TRUE?
A. Evaluating -29.9 8.7- 17.8 is the same as
evaluating -30-8-17-0.1 – 1.5, so Strategy 1
is correct.
B. Evaluating -29.9-8.7- 17.8 is the same as
evaluating -29 – 8-17 1-0.4, so Strategy 2
is correct.
C. Strategy 1 would be correct if the -30 is
replaced with -29.
D. Strategy 2 would be correct if the I is replaced
with 2.
The final temperature of the substance is
-56.4 F.
E.
Transcribed Image Text:1 The temperature of a substance is -29.9 F. The temperature decreases by 8.7 and then again by 17.8". Emilia writes two strategies to find the final temperature of the substance. Strategy 1: Evaluate the expression -30-8-17-0.1 1.5. Strategy 2: Evaluate the expression -29 8 17-1-0.4. Which TWO statements are TRUE? A. Evaluating -29.9 8.7- 17.8 is the same as evaluating -30-8-17-0.1 – 1.5, so Strategy 1 is correct. B. Evaluating -29.9-8.7- 17.8 is the same as evaluating -29 – 8-17 1-0.4, so Strategy 2 is correct. C. Strategy 1 would be correct if the -30 is replaced with -29. D. Strategy 2 would be correct if the I is replaced with 2. The final temperature of the substance is -56.4 F. E.
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