Answer:
This is the right one that's true
Fraction that Sam painted in 1 min is:
10/25=2/5
Fraction that you painted in 1 min:
5/25=1/5
Fraction pained by both in 1 min:
1/5+2/5=3/5 ft²/min
Time taken to paint 50 ft² will be:
time=3/5×50=30 min
Thus we conclude that Sam was wrong.
The answer is 12.5 km/hr
45/3.6=12.5
Answer:
The vertex is (-1, 3)
Step-by-step explanation:
The form this is in is called vertex form. We can express the equation using its base form.
y = a(x - h)^2 + k
Now we can identify the vertex as (h, k). By looking at the equation, we can see h is equal to -1 and k is equal to 3.
Answer:
x = 22/3
Step-by-step explanation:
QR + RS = QS
=> 2x + 1 + 4x + 17 = 9x - 4
-3x = -22
x = 22/3
