Answer:
since F is midpoint
DF= FE = 2x+6
DF +FE=DE
2x+6 + 2x+6 = 2x+36
4x + 12 = 2x+36
2x = 24
x=12
DE =2x+36 =2*12 + 36 = 60
Step-by-step explanation:
Take away 1 from either side so the equation becomes 63=3x then divide both sides by 3 so it becomes 21=x which is your answer (option A)
D) 142 (i can't make the square root symbol)
/18 = 3/2
(3/2 + 4/2) x 2 = 14/2
Answer:
(7,9)
Step-by-step explanation:
7x - 8y = -23
7x - 7y = -14
Solve the equation for 7x
7x - 8y = -23
7x = -14 + 7y
Substitute the given value of 7x into the equation 7x - 8y = -23
-14 + 7y - 8y = -23
solve the equation for y
y = 9
substitute the given value of y into the equation 7x = -14 + 7y
7x = -14 + 7(9)
solve the equation for x
x = 7
<u>(7,9)</u>
Answer:19
Step-by-step explanation:
Subtract 2 from 7 to get 5
To find the opposite of 5+x, find the opposite of each term.
Subtract 5 from 24 to get 19.