Answer: x=9
Step-by-step explanation:
2x+10=28
2x=18
x=9
Answer: (C)The square root of terms separated by addition and subtraction cannot be calculated individually.
Step-by-step explanation:
400x to the power of 2 + 480x + 144
Answer:
80 square yards
Step-by-step explanation:
We know we have a width of 8 yards and a perimeter of 36.
how I figured it out was:
36=(8*2) * (x*2)
8*2=16
36-16=10
So now we know the length and width.
area of a rectangle is lw (length * width)
10*8=80.
Step-by-step explanation:
first you have to do the subtraction in the parentheses so it's 8+3(4) and then you multiply the 3 by 4 (only the 3 because the 8 isn't next to the multiply) and then you have 12, add 8 and it's 20
