Pleaseee help i’m literally dying

B.

Step-by-step explanation:

= (x + y)(x - y)

So, if x + y = 7/10, and x - y = 5/14, = (7/10) * (5/14) = 35/140 = 1/4.

(1/2)^2 = 1/4

So, (B) (1/2)^2 is your answer!

Hope this helps!

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x