3 years ago

I need to know how to solve this question

Mathematics

1 answer:

FinnZ [79.3K]3 years ago

4 0

9 + v = 0
2v + 5 = 0

v = -9
v = -5/2

The final solutions are
v1 = -9 and v2 = -5/2

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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.

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3 years ago

Which points on this vertical number line best represent the locations of 2.5 and minus 3 over 2 ?

rodikova [14]

Answer:

ok listen when looking at the graph the answer is easy its b

Step-by-step explanation:

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3 years ago

Questions 1,2, and 3 please. These are the last questions in the packet and I'm sorta stuck on them. Could anyone help explain h

Delicious77 [7]

Where are the questions?

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4 years ago

5/9 is rational or irrational

Elenna [48]

Rational hope this helps

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3 years ago

A carpenter is refinishing two cupboards. She must add the areas of the cupboards to determine the amount of plywood she needs.

Vesna [10]

You are given the area of both cupboards.

The total area would be found by adding the two areas together:

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Combine like terms:

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The area of both cupboards would be 7a^2+20

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4 years ago