9514 1404 393
Answer:
40°
Step-by-step explanation:
Since DP is an angle bisector, the angles it creates are congruent:
∠1 = ∠2 = 20°
The requested angle is the sum of the measures of angles 1 and 2:
∠FDE = ∠1 + ∠2 = 20° +20°
∠FDE = 40°
Simple interest is found by multiplying the amount of money deposited, the rate ( like .05 per month ) , and the time it will be in the bank ( one moth, 5 months, a year, etc. ).
I'm 1000% positive this is correct.
Hope I helped you learn something new today!
Basically expand
use FOIL (a way to remember distributive property)
first outer inner last
that is th eorder to multiply them
First: x times 2x=2x²
Outer: x tmes 9=9x
Inner: -8 times 2=-16x
last: -8 times 9=-72
add them
2x²+9x-16x-72
2x²-7x-72
Answer: 75
solve:
For gym A
total cost= membership fee+monthly fee
membership fee=25
monthly fee=25
cost of x month=25x
total cost=25+25x
for gym B
membership fee=10
total cost=55+10x
now total cost are same
25+25x=55+10x
15x=30
x=30/15
x=2.
2 months
and amount =25+25*2=75