QUESTION BELOW.................................

Mathematics

2 answers:

Aleksandr [31]3 years ago

8 0

4^-3 equals 1/64. Hope this helps!

Valentin [98]3 years ago

5 0

The correct answer is A. -3
4^-3 = 0.015625
0.015625 converted to a fraction is 1/64
Hope this helps!

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A ball is shot straight up from the top of a 15-story building. The motion of the ball could be described by the function: h(t)=

viktelen [127]

Answer:

After 4 seconds the height is 480 meters.
The maximum height is 484 meters.
The ball hits the ground after 10 seconds

Step-by-step explanation:

The height after four seconds is h(4) = -16 * r² + 144*4+160 = 480

The maximum height of the ball is the value it takes at its vertex 'v = -b/2a'. In this case a = -16 and b = 144, so the v = -144/-32 = 4.5. The maximum height of the ball as a result is h(4.5) = -16 (4.5)² + 144*4.5 + 160 = 484

To find the moment the ball hits the ground, we need to find when h takes the value 0 by using the quadratic formula, with a = -16, b = 144 and c = 160.

$r_1,r_2 = \frac{-144 \, ^+_- \sqrt{144^2-4*(-16)*160}}{2*(-16)} = \frac{-144 \, ^+_- \sqrt{30976}}{-32} = \frac{-144 \, ^+_- 176}{-32} = -1, 10$

Since t cant take negative values, then the correct value is 10. The ball hits the ground after 10 seconds.

7 0

3 years ago

PLEASE HELP ME !! GEOMETRY REFLECTIONS!! PLEASE EXPLAIN

mr_godi [17]

The reflected image 1 is the image of reflected in the mirror line y=0 and the reflected image under y =2 is reflected and the mirror line y is equal to 2 hence the answer is (5,2)...

the number that belongs to the green box is 5