Answer:
42a+36
Step-by-step explanation:
6(7a+6)
Distribute
6*7a + 6*6
42a+36
7a-4=3a+27+4a
7a-4=7a+27
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Answer:

Step-by-step explanation:
The fact that the figure is a cube means all sides, faces, and corners are equal.



Answer:
15 miles
Step-by-step explanation:
12 + ( 1/4 x 12) = ?
12 + 3 = 15
1/5 of a foot
Simply subtract the height of Pancho’s sandcastle (3/5 of a foot) minus the height of his sister’s sandcastle (2/5 of a foot) to find a difference of 1/5 of a foot, meaning Pancho’s sandcastle was 1/5 of a foot taller than his sister’s sandcastle.