4. The product of two consecutive integers is 90. Find the integers.
I. 9 and 10
II. -9 and -10
III. 2 and 45
IV. -2 and -45
A. I only
B. II only
C. I and II only
D. III and IV only
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4. The product of two consecutive integers is 90. Find the integers.
I. 9 and 10
II. -9 and -10
III. 2 and 45
IV. -2 and -45
A. I only
B. II only
C. I and II only
D. III and IV only
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Answer:
C. I and II only
Explanation:
Since the problem stated that the integers are consecutive, III and IV are automatically removed because 2 and 45 are not consecutive.
9 multiplied by 10 is equal to 90
-9 multiplied by -10 is equal to 90 (we'll follow the law of integers. in multiplication, if the sign of both integers are alike, the product will be positive.