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3 years ago

PLEASEEEEE HELP BIT FINALS TEST!!!! PLSSS :(

Mathematics

1 answer:

boyakko [2]3 years ago

8 0

Answer:

The 1st, 3rd, and the 4th

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Ill give brainliest

Savatey [412]

C. For sure. Hope it helps

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2 years ago

At a local swimming pool, the diving board is elevated h = 9.5 m above the pool's surface and overhangs the pool edge by L = 2 m

beks73 [17]

<h2>Answer:</h2>

$s_{y}=u_{y}t+\frac{1}{2}a_{y}t^{2}\\9.5=4.9t^{2}$

and,

$v_{x}=1.39a_{x}+2.5$

<h2>Step-by-step explanation:</h2>

In the question,

Taking the elevation of pool along the y-axis, and length of the board along the x-axis.

On drawing the illustration in the co-ordinate system we get,

lₓ = 2 m

uₓ = 2.5 m/s

and,

$h_{y}=9.5\,m$

So,

From the equations of the laws of motion we can state that,

$s_{y}=u_{y}t+\frac{1}{2}a_{y}t^{2}$

So,

On putting the values we can say that,

$s_{y}=u_{y}t+\frac{1}{2}a_{y}t^{2}\\9.5=(0)t+\frac{1}{2}(9.8)t^{2}\\t^{2}=\frac{9.5}{4.9}\\t^{2}=1.93\\t=1.39\,s$

Now,

The <u>equation of the motion in the horizontal</u> can be given by,

$v_{x}=u_{x}+a_{x}t\\v_{x}=2.5+a_{x}(1.39)\\So,\\v_{x}=1.39a_{x}+2.5$

<em><u>Therefore, the equations of the motions in the horizontal and verticals are,</u></em>

$s_{y}=u_{y}t+\frac{1}{2}a_{y}t^{2}\\9.5=4.9t^{2}$

and,

$v_{x}=1.39a_{x}+2.5$

6 0

3 years ago

According to the number line, what is the distance between points A and B? 6 units 7 units 12 units 14 units

IgorLugansk [536]

Answer:

hope this helps :)

Step-by-step explanation:

6 0

3 years ago

Helppppppp!!!!!!!!!!!

kifflom [539]

It’s 8 imma just type random letters cause it has to be longer than 20 letters jfjf

3 0

3 years ago

A store offers a discount of 20 ℅to customers who spend more than $100.If a customer's total bill was $450,what will the custome

kotegsom [21]

Answer:

$360

Step-by-step explanation:

This is because 20% of $450 is $90. You subtract the $90 from $450 and you get your answer!

5 0

3 years ago