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Mathematics 18 Online
OpenStudy (anonymous):

Evaluate ab - 5.3 if a = -3 and b = 2.8

OpenStudy (noseboy908):

just substitute -3 for a and 2.8 for b and solve.

OpenStudy (anonymous):

I got -38.1, and it's wrong. Any help please?

OpenStudy (noseboy908):

ok. Here's what it should look like substituted: "(-3)(2.8) - 5.3" Now solve

OpenStudy (anonymous):

-13.7 is that correct?

OpenStudy (noseboy908):

correct. Hen Hao

OpenStudy (anonymous):

Thanks @noseboy908

OpenStudy (noseboy908):

anytime.

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