Answer:
its B= 79/80
Step-by-step explanation:
i divided 79 by 80 and got .87 repeating
(brainliest???)
Answer:
The maximum height of the marshmallow is 49 feet.
Step-by-step explanation:
The vertex form of a parabola is
.... (1)
Where, (h,k) is vertex of the parabola is a is constant.
The given function is
..... (2)
Where, h is height of the marshmallow (in feet) and t is the time (in seconds) after he throws the marshmallow.
From equation (1) and (2), we get

The value of a is -16, which is less than 0. So, the given function is a downward parabola.
The vertex of a downward parabola is the point of maxima.
The value of h is 14 and the value of k is 49. So, the vertex of the parabola is (14,49). It means the maximum height of the marshmallow is 49 feet in 14 seconds.
Therefore the maximum height of the marshmallow is 49 feet.
Answer:
600
Step-by-step explanation:
Andrew has 280 points. We are told that he is 20 points short of 50% proficiency.
280 + 20 = 300
Now we know that 300 is 50% of the maximum amount of points.
As 50% is equal to 1/2, we know that 300 is 1/2 of the total. To find the total, we must double 300, resulting in 600.
Hope this helps!
D = sqrt (x2 - x1)^2 + (y2 - y1)^2
(2,-3)...x1 = 2 and y1 = -3
(5,-4)...x2 = 5 and y2 = -4
now we sub and solve
d = sqrt (5 - 2)^2 + (-4 - (-3)^2)
d = sqrt (3^2 + (-1^2)
d = sqrt (9 + 1)
d = sqrt 10
d = 3.16 <==