Answer:
They are correct. :)
Step-by-step explanation:
Answer is 7.
55+5X=90
5X=90-55
5X=35
X=35/5
X=7
Since the angle
100
° is in the second quadrant, the reference angle formula is A
r
=
180
°
−
A
c. A
r
=
180
°
−
100
°
The reference angle is A
r
=
80
°
.
80
°
I believe equal to two because 5x+7 do 5X to both sides 7÷5 is 1.4
5^2 + 3^2 (equals to 34) ; That's the wrong expression
It should look like this : (5+3)^2 (which equals to 64)