Evaluate.
-(1.7)(-7.81)
A)9.51
B)-13.277
C)-6.11
D)13.277

Question

Quizplus · Accepted Answer

When multiplying a positive number and a negative number together, the result is always negative. Therefore, we can eliminate choices A and D. To find the product of (1.7) and (-7.81), we can use the rule that states when multiplying two numbers with decimals together, we multiply them as if they were whole numbers and count the total number of decimal places in both factors. In this case, the product would be 13.277, but since one of the factors is negative, the answer must be negative. Therefore, the best choice is B, -13.277. When multiplying a positive and a negative number, the product is negative. Thus, the answer cannot be A or D. To find the exact answer, you can multiply 17 and 781 together (since 7.81 is 781 divided by 100) and then add a negative sign. However, it's clear that this product will be greater than -6, so the only viable option is B.

Evaluate. -(1.7)(-7.81)