What does the variable r represent in the equation 10r+4=8?
1 answer:
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Answer:
= 27.
Step-by-step explanation:
3 to the third power ( ) is the same as :
3 x 3 x 3 which would equal :
3 x 3 = 9 x 3 = 27.
Hope this helps,
Davinia.
answer: henri must make 160 brownies.
work:
set up as a system of equations.
=
now, cross multiply to solve.
25(x) = 40(100)
25x = 4,000
now divide 4000/25.
4000/25 = 160.
40 is 25% of 160, so he must make 160.