Answer:
Step-by-step explanation:
drama+yearbook=64
drama=10 more than yearbook
drama=10+yearbook
the equations are
x+y=64
x=10+y
solve
subsitue 10+y for x
10+y+y=64
10+2y=64
minus 10 both sides
2y=54
divide both sides by 2
y=27
subsitute back
x=10+y
x=10+27
x=37
37 people in yearbook club
27 in drama club
Answer:
90°
Step-by-step explanation:
cosx = y=1
Therefore cosx =1
For cosx= 1
x= 90°, 450°, 810° ... etc.
Now 0° ≤ x ≤ 360°
The only value that satisfies both relations is 90°
Therefore, x= 90°
Answer:
A
Step-by-step explanation:
Given
x² = 27 ( take the square root of both sides )
x = ±
= ±
= ± ×
= ± 3 → A