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3 years ago

3. A line passes through (9, -9) and (10,-5).

Mathematics

1 answer:

viktelen [127]3 years ago

8 0

Answer:

the answer for number a is -14

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A ball is dropped from the ground. T represents the time in seconds. To find the time you can you the equation Y= -16t^2 +44t. H

bagirrra123 [75]

Answer:

2.75 seconds.

Step-by-step explanation:

We have been given that a ball is dropped from the ground. T represents the time in seconds.

To find the time when the ball was in air, we will equate height of ball with 0 and solve for t.

$-16t^2+44t=0$

Upon dividing both sides by 4, we will get:

$-4t^2+11t=0$

$-t(4t-11)=0$

$-t=0\text{ (or) }(4t-11)=0$

$t=0\text{ (or) }4t-11=0$

$t=0\text{ (or) }4t=11$

$t=0\text{ (or) }t=\frac{11}{4}$

$t=0\text{ (or) }t=2.75$

Since our given function is a downward opening parabola, so ball will be in air between both t-intercepts.

Since the ball touches the ground at 2.75 seconds, therefore, the ball would be in air for approximately 2.75 seconds.

4 0

3 years ago

Amanda's jewelery box is in the shape of a cube that has 6-inch edges what is the volume of Amanda's jewelry box

LekaFEV [45]

Since all the edges are 6, then it would be 216 as the volume.

4 0

4 years ago

A student spent 5/8 of an hour each evening reading a book about whales. If it took the student 10 evenings to finish the book,

Goshia [24]

Answer: 6hours and 25 minutes

5/8 of one hour is 37min and 5seconds
Multiple by the 10 evenings is 375
Divide by 60 (minutes in an hour)

7 0

3 years ago

find the median of the following data classes 100-150,150-200,200-250,250-300,300-350 and the frequency is 22,18,25,20,15

kaheart [24]

Answer:

Step-by-step explanation:

median = (N+1)/2

=(100+1)/2

= 50.5

cf just greater than 50.5 is 65 .So, median is 65.

3 0

3 years ago

Find the zeros of the function g(x) = 2x2 - 5x + 2.

sertanlavr [38]

G(x) = 2x² - 5x + 2 = 2x² - 4x - x + 2 = 2x · x - 2x · 2 - 1 · x - 1 · (-2)

= 2x(x - 2) -1(x - 2) = (x - 2)(2x - 1)

g(x) = 0 ⇔ (x - 2)(2x - 1) = 0 ⇔ x - 2 = 0 or 2x - 1 = 0

x = 2 or x = 0.5

8 0

3 years ago