81.

multiply everything with 2

x is the number of 1.50 and 2.50 wrenches he bought. do the calculations for the rest of them
83.

multiply with 4

x is the amount of half dollars in the pile of coins. do the calculations for the quarters.
86.

x is the amount of peaches cans, do the calculations for the rest.
Answer:
30 degrees ???
Step-by-step explanation:
Answer:
312cm2
Step-by-step explanation:
Area of the triangles:
A =1/2bh
A=1/2(10*12) = 1/2*120=60.
There are two triangles. 60*2=120. 120 is the area of both triangles.
Area of the rectangle:
16*12=192.
120+192=312cm2
1530 ÷ 29.24 = 52.3256
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