Answer:
-1/4
Step-by-step explanation:
I think it is 51.5, cause 412÷8 =51.5
Answer:
I dont know how to do this
Answer:
12 inches
Step-by-step explanation:
So you know that the perimeter of a picture frame (a rectangle) is 2 widths plus 2 lengths.
Let x= lengths and w= widths
From the question we already know that w=7, so we can set up an equation that says:
2x + 2w = 38
2x + 2(7) = 38
2x+14 = 38
2x +14 -14 = 38-14
2x = 24
2x/2 = 24/2
x= 12
Since x= lengths =12
the length of the frame is 12 inches.
Answer:
42
Step-by-step explanation:
Area of a triangle is base times height divided by two
21 times 4 equals 84
84 divided by 2 = 42
