Answer:
50
Step-by-step explanation:
25 ----------- 1/2 h (half and hour)
x ------------- 1 h
---------------------------------
25 * 1h = x * 1/2h
25 = x/2
50 = x
he can solve 50 problems in 1 hour
Answer:
56 is the answer
Step-by-step explanation:
Answer:
Step-by-step explanation:
Answer:
y = 1.2x - 3 (slope intercept form)
or
5y-6x = -15 (standard form)
Step-by-step explanation:
Two parallel lines have the same slope, which means that our line's slope, will also be 1.2.
we can use the formula to find the equation of the line:
y-y1 = m (x-x1)
y1 - y coordinate of a point on the line
x1 - x coordinate of the same point on the line
m - slope
and we get:
y+3 = 1.2 (x-0)
y = 1.2x - 3 (slope intercept form)
or
5y-6x = -15 (standard form)
This is a power of a point problem.
So we have DA*DB = DY*DZ
or 3x*(3x+8) = x*(32+x)
9x^2 + 24x = 32x + x^2
8x^2 -8x = 0
(we can eliminate 0 as an option)
8x - 8 = 0
8x = 8
x = 1
DA = 3*1
DA = 3