Multiply the bracket by 5
I used PEMDAS
P= parenthesis
E= exponents
M=multiplication
D= division
A= addition
S= subtraction
7r+2= 5(r-4)
7r+2= 5r-20
Move 5r to the left hand side . Positive 5r changes to negative 5r
7r-5r+2= 5r-5r-20
2r+2=- 20
2r+2-2= -20-2
Move positive 2 to the right hand side. Changes to negative -2
2r+2-2= -20-2
2r= -22
Divide by 2 for 2r and -22
2r/2= -22/2
r= -11
Answer is r= -11
Answer:663
Step-by-step explanation:
Answer:24
Step-by-step explanation:
simplify 1 * x to x
x/2=12
multiply both sides by 2
x=12 * 2
simplify 12 * 2 to24
x=24
Answer:
2. x > 17
3. x ≤ 7
4. a < 4
5. t ≥ -2
Step-by-step explanation:
Answer:
Step-by-step explanation:
All pyramids have a volume as one-third of a prism with the same base area and the same height.
This will make the formula for the volume 
. We already know the height of the pyramid is 10, but the area of the base for this rectangle would be its length and its width. Let's calculate this:
Let's put these values back into the formula:
