Answer:
what this student did was distribute the x to all 3 numbers when what they should have done was just combine 7x and -2x, and the answer should be 5x +8
Step-by-step explanation:
By the student placing x on the outside they are making the equation seem as if 8 also had an x. However if we look at the original problem 8 does not have any variable so right away that was their first mistake. Instead they had to find the numbers that had similar values. In this case it is negative 2x and 7x. We combine those two to get 5x+8 we cannot combine these two because as said previously 8 doesnt have a variable. so the answer stays with the expression 5x+8
Answer:
A. 26°
Step-by-step explanation:
If ON =OL, then the two triangles are are similar.
The base angles must be equal.
We group the similar terms to obtain:
Divide through by 2 to get:
x=8
Substitute x=8
Answer:
362,880
Step-by-step explanation:
9*8*7*6*5*4*3*2*1=362,880. You multiply the number of players, but subtract one each time.
Answer:
C = 37.7 inches
Step-by-step explanation:
You are looking for the circumference.
Formula for the circumference-> C=2πr
variables:
c = circumference
r = radius
You have the diameter, which is 12 inches. Radius is half of the diameter. which means r is half of 12 (aka 6).
put the radius where the variable is in the formula.
C=2π(6)
you now have enough information to solve for circumference.
C = 2 * π * 6
C = 37.7
