Elena used math facts as an anchor to find the sum of 5 and 7. Her work is shown
In which step did her first error occur?
Step 1: The phrase "sum of" means addition,
Step 2 5+5 = 10
Step 3 Since 7 is 2 more than 5, 2 more need to be
added to 10
Step 4. Therefore, 5 + 7 = 8.
O Step 1
O Step 2
O Step 3
O Step 4

19.side- angle- side

20. angle- side- angle

step-by-step explanation:

(- 1, 0 )

step-by-step explanation:

an x- intercept is where the function crosses the x- axis.

to find the x- intercept/s look for the value of x when f(x) = 0

from the given table there are 3 values of x where f(x) = 0

when x = - 1, x = 2, x = 3

the one that is listed is (- 1, 0 )

you probably already have the answer but anyways it's b. 15.0

step-by-step explanation: