Answer:
x=1
Step-by-step explanation:
-2(5x+4)-3x+3=-18
Distribute the -2
-10x -8-3x+3 = -18
Combine like terms
-13x -5 = -18
Add 5 to each side
-13x-5+5 = -18+5
-13x=-13
Divide by -13
-13x/-13 = -13/-13
x =1
Step-by-step explanation:
x is the number.
(x + 5) - 2x : the sum of the number and 5 decreased by twice the number.
or simplified without the brackets
x + 5 - 2x = 5 - x
it is not clear if you need the general expression showing both conditions (the first up there), or the then simplified result
5 - x
Tap on the picture above.
Answer:
- 1.875 seconds to reach the maximum height
- 62.25 ft
Step-by-step explanation:
The problem can be solved by putting the equation into vertex form.
s - 6 = -16(t^2 -15/4t)
s -6 -16(15/8)^2 = -16(t^2 -15/4t +(15/8)^2) . . . . add the square of half the x-coefficient inside parentheses and equivalent amount on the other side of the equation
s -62.25 = -16(t -15/8)^2 . . . . write as a square, simplify the constant
s = -16(t -1.875)^2 +62.25 . . . . put in vertex form
The vertex of the downward-opening parabola is at (t, s) = (1.875, 62.25).
1. It took 1.875 seconds for the ball to reach its maximum height.
2. The ball went up to 62.25 feet.
Answer: She finished 3:16
Step-by-step explanation:
This is because 1:00 <u>plus</u> 2 hours is 3:00 and 3:00 <u>plus</u> 16 is 3:16
