jaydajuliaC
jaydajuliaC
18-10-2016
Mathematics
contestada
if r = -4 find the value of 3r - 9.
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fromholland
fromholland
18-10-2016
3 × -4 -9=-21
you know r so its just fill in
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stellathewiz
stellathewiz
18-10-2016
The answer is -21. You fill in the r with -4 and you multiply 3 with -4 which is -12. Then subtract 9 from -12 which is the same as -12+-9 which is equaled to -21. Hope this helps.
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