Answer:
2.5 seconds.
Step-by-step explanation:
Find the value of t when the height is 28 feet:
-16t^2 + 56t + 4 = 28
-16t^2 + 56t - 24 = 0
-8(2t^2 - 7t + 3) = 0
-8(2t - 1)(t - 3) = 0
t = 0.5, 3 seconds.
So on the upward journey the rock is at 28 feet at 0.5 second after the throw and at 3 seconds it is at 28 feet again while it is falling back.
Therefore the period when it is at least 28 feet above the ground is 3.0 - 0.5 = 2.5 seconds.
Answer: y=(-3x+7)/2
Isolate y.
2y= -3x+7
y= (-3+7)/2
Answer: x=(-2y+7)/3
Isolate x
3x=-2y+7
x=(-2y+7)/3
Answer: 6x+4y=14
Idk if that counts but multiply the whole equation by 2.
Answer:
c (-2,1)
Step-by-step explanation:
use y= and substitute into 2nd equation which will give you x. Then take x value and substitute into first equation which will give you y value and theres your answer
Answer:
"half of the 12-inch quesadilla" is larger
Step-by-step explanation:
The "inch size" is the diameter of the circular quesadilla.
The area of circle is given by 
We also know radius is half of diameter.
<u>HALF OF 12-INCH QUESADILLA:</u>
12in diameter = 6 inch radius, the area is:
Half of this is:
<u>ENTIRE 6-INCH QUESADILLA:</u>
6 inch diameter means 6/2 = 3 inch radius
The area of this is:
<u>So, we can say that "half of the 12-inch quesadilla" is larger.</u>
