#4 .
x + 8 - 8 = 7 - 8
It's "Subtraction property of equality"
It's correct
Answer:
y=-1/4x+3
Step-by-step explanation:
The answer is
X=10 or X= -4
12 inches = 1 foot
thus 47 feet 3 inches = (47+3/12) feet =47.25 feet
for question 1
Area of Base B =45×25 = 1125 cm²
perimeter of base P = 2(45+25) = 140 cm
Height = 15 cm
Using the formula
Surface area = 2B + Ph
A = 2×1125 + 140×15= 4350 cm²
Voume = Bh = 1125×15= 16875 cm³
For question 2,
Area of base = 7× 5/2= 17.5 cm²
Perimeter of base = (7+7+7) = 21 cm
Surface area = 2B + Ph
Surface area of prism = 2×17.5+ 21×10 = 245cm²
Volume = Bh = 17.5×10 = 175 cm³
