A right angle has one 90° angle, and the sum of the angles of any triangle is always equals 360°.
Answer:
x = 7
Step-by-step explanation:
Let x be the number
x+16 = 23
Subtract 16 from each side
x+16-16 =23-16
x = 7
Answer:
The answer is (1/2)z - x - 3y
Step-by-step explanation:
∵ 
∵ 
∵ 
∵ 
∴ 
∴ 
∴ 
Answer:
150 for lower seats and 200 for higher seats
Step-by-step explanation:
Need two equations and then solve using substitution method:
Equation 1 for tickets sold:
$35x + $25y = $10,250
Equation 2 for quantity (number #) of tickets sold:
x + y = 350
Use substitution method:
y = 350 - x
35x + 25 (350 - x) = $10,250
35x + $8750 - 25x = $10,250
10x + $8750 = $10,250
- $8,750 -$8,750
10x = 1,500
x = 150
y = 350 - 150
y = 200
Check the answers:
$35 (150) + $25 (200) =
$5,250 + $5,000 = $10,250