To find the common difference subtract going from right to left.
29-18 = 11
18-7 = 11
7 - -4 = 11
- 4 - - 15 = 11
d = 11
Answer:
56
Step-by-step explanation: You have to substitute 6 for a because it says, "Which expression is equivalent to 7(a+2) when a=6"
7(a + 2)
7(6 + 2)
42 + 14
= 56
The formula is: A=1/2 h (base one + base two)
<span>Plug in your numbers and you will get the area.</span>
Answer:
Step-by-step explanation:
we know that
To put factor back into the square root, we have to put squared value
we have
Remember that
substitute in the expression above