Answer:
x = 
Step-by-step explanation:
Applying altitude- on - hypotenuse theorem.
(leg of large Δ )² = ( part of hypotenuse below it ) × ( whole hypotenuse )
x² = 3 × (3 + 7) = 3 × 10 = 30 ( take square root of both sides )
x = 
8(5) - 4y = 39
40 - 4y = 39
-4y = -1, y = 1/4
Solution: y = 1/4
Answer:
B
Step-by-step explanation:
He's typing 40 words per minute.
110 words divided by 2.75 minutes.
40 x 4.25 minutes= 170
Answer:
0.8 kilowatt/hour
Step-by-step explanation:
divide 4/5, gives you .
The square root of 18 is 4.24