84
b=Ah
-8 + b = 4 add 8 to both sides: b = 12
B=Area of the base
first you add 2 to the 8. the 2 crosses out itself so now you have b over 4 equals 10. then you multiply the 4 to the ten and the 4 the 4 crosses out itself and you end up with b= 40
4
A = bhThis actually means A = b multiplied by h.A = 8 multiplied by 4A = 32
b=Ah
12
-8 + b = 4 add 8 to both sides: b = 12
B=Area of the base
Evaluate -4(a+b) - 10a/b when a=8 and b=5
A = bh (multiply length x width).
A = 1/2 BH A = 24 = 1/2 BH 24 * 2 = BH 48 = BH H = B - 2 48 = B(B - 2) B2 - 2B = 48 B2 - 2B - 48 = 0 (B - 8)(B + 6) = 0 B = 8 or -6 Since the base cannot be negative, the base is 8 and the height is 6 (8 - 2)
3 + 5 = 4*b so 8 = 4*b Divide both sides by 4: 2 = b
4
The formula for the volume of a solid (not a sphere) is V=Bh, or the volume (V) equals the area of the base (B, or bh) multipied by the height of the solid (h).
a=-2 4b=-2 --> b=-1/2 c=8 (-2)(-1/2)(8)(3)= 24