Answer:
k = - 3
Step-by-step explanation:
Look at the picture*
There are twelve tubas in the band. And btw you should work on your spelling. I tutor. So if you want my help just message me.
The answer is -4 final answer
C. 4x + y = 21
4(3) + 9 = 21
12 + 9 = 21
21 = 21
Answer: This parabola has 0.3875 x-intercepts,
<span>representing the times when the dolphin's height above water is </span>
0 feet.
The x-intercept is the point where the graph crosses the x-axis, which is when the value is y=0.
The calculation for y=0 would be
<span>Y = -16x2 + 32x - 10
</span><span>0 = -16x2 + 32x - 10
</span>-8x2 + 16x - 5=0
-b +-√(b^2-4ac) /2a=
-16 +-√(16^2-4(-8)(-5)) /2(-8) =
-16+- √(256-160/ -16 =
-16+- √(96/ -16 =
-16+- 9.8/ -16 =
x1= 0.3875
x2= -1.6125
