A. 2x+y=25; x+y=20
x represents cheese wafers and y represents chocolate wafers.
B. I will choose elimination since there is y and y. I can multiply one equation by -1 to get y and -y, which cancels out.
2x+y=25
-x-y=-20
Add equations
x=5
Plug x in
5+y=20
y=15
Final answer: 5 cheese wafers, 15 chocolate wafers
Step-by-step explanation:
By Linear Pair Theorem,
110⁰ + 5x⁰ = 180⁰
5x⁰ = 70⁰ ------- (1)
x⁰ = 14⁰
We know that adding the angles of the triangle lying on the same side, equals the opposite exterior angle, i.e.,
5x⁰ + 40⁰ = 2y⁰
From 1,
70⁰ + 40⁰ = 2y⁰
110⁰ = 2y⁰
y⁰ = 55⁰
<em>Hope it helps :)</em>
Answer: he fly 107.76 miles per hour for each hour
Step-by-step explanation:
Charles Lendbergh had his first solo flight across the Atlantic Ocean. He flew 3,610 miles in 33.5 hours.
Speed = distance /time
If he flew about the same number of miles each hour, it means that the number of miles that he flies in each hour would be
3610/33.5
= 107.76.miles per hour.
