I hope this helps you
2x and 8x+40 complementary angles
their sum is 180
2x+8x+40=180
10x=140
x=14
Answer:
3.6 hours
Step-by-step explanation:
The computation of the number of hours will the battery last is given below:
Given that
The capacity of her battery is 2 by 5
And, it declines 1 by 9 for every hour
So,

= 3.6 hours
Answer:
i'm pretty sure ∠ ECF and ∠FCE work
y-2 = 38
parallel side have the same length in a parallelogram
add 2 to each side
y =40
17 = x+3
parallel side have the same length in a parallelogram
subtract 3 from each side
14 =x
opposite angles are equal in a parallelogram
124 = 2u
divide by 2
u = 63
angles on the same side add to 180
124+ v-3 =180
121+v=180
v = 59
Cancelling out both the -6 we get 12=0 which is not true, hence the equation is incorrect.