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Kisachek [45]
3 years ago
14

Can someone help me on how to do this i have a whole worksheet of this and i have no clue what to do

Mathematics
1 answer:
ss7ja [257]3 years ago
4 0

Answer:

a & b.    in 1 sec the object reaches a maximum height of 16 feet

c.      2 sec. the object will hit the ground

Step-by-step explanation:

h = -16t^{2} +32t.

When graphed, you would get a parabola that opens down.  The vertex is the key to the problem.  The vertex (t, h) will give you the maximum height and the time to reach that height.

So,  t = -b/2a = -32/-16(2) = 1

      h(1) = -16(1^{2}) + 32(1) = -16 + 32 = 16

Therefore, the vertex is (1, 16)

So, in 1 sec the object reaches a maximum height of 16 feet

let h = 0 for when the object hits the ground

-16t^{2} +32t = 0

-16t(t - 2) = 0

t = 0  or t = 2

After 2 sec. the object will hit the ground

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A piece of paper is chosen from a bag that contains 10 pieces of paper numbered 1 through 10. Find the probability that the pape
motikmotik

Answer:

1/5

Step-by-step explanation:

7 0
3 years ago
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In March, there will be two conferences: one for math and one for history. So far, 7 people have signed up for the math conferen
otez555 [7]

Answer:

After 4 days, the number of people attending both conferences be the same.      

Step-by-step explanation:

We are given the following in the question:

Maths conference:

Number of people already signed = 7

Number of people who sign up each day = 2

Thus, the number of people who will sign up for maths conference in x days will be given by the linear function:

 f(x) = 7+2x

History conference:

Number of people already signed =11

Number of people who sign up each day = 1

Thus, the number of people who will sign up for maths conference in x days will be given by the linear function:

 g(x) =11+x

Both conference will have same number of people when

f(x) = g(x)\\\Rightarrow 7 + 2x = 11+x\\\Rightarrow x = 4

Thus, after 4 days, the number of people attending both conferences be the same.

5 0
2 years ago
What is the slope in slope-intercept form for this graphs?
s2008m [1.1K]

Answer:

Step-by-step explanation:

since the line crosses the y axis at -4  we know that b in the slope intercept form is -4 . now we just need the slope..  and slope is rise over run  or y/x... soooo   .....

looking at the graph I see that the point (-1,4) and (0,-4) look like they are points on the graph..  

soooo....

the rise is -8 when the run is 1 or  -8/1  or just -8

use the slope intercept form  y = mx + b

y= -8x + (-4)

y = -8x -4    :)

7 0
2 years ago
Find the final amount of money in an account if $7, 200 is deposited at 2.5 % interest compounded
andreev551 [17]

The final amount is $7,615.27

A = P(1 + r/n)^t

Where,

A = Final amount

P = principal = $7, 200

r = interest rate = 2.5% = 0.025

n = number of periods = 4

t = time = 9 years

A = P(1 + r/n)^t

= 7,200(1 + 0.025/4)^9

= 7,200(1 + 0.00625)^9

= 7,200(1.00625)^9

= 7,200(1.0576769512798)

= 7,615.2740492152

Approximately,

A = $7,615.27

brainly.com/question/14003110

7 0
2 years ago
Alicia walks 4 miles in 1 hour and can speed walk 5 miles in 1 hour. What percent of Alicia's average speed walking rate is her
RSB [31]

Answer:

The % Alicia speed walking is 125 % of average walking

Step-by-step explanation:

Given as :

Distance cover by Alicia while walking = 4 miles

Time taken                                               = 1 hour

So, Speed of Alicia while walking = \frac{Distance}{Time}

Or,                                            S 1  =  \frac{4 miles}{1 hour}

I.e                                              S 1  =  4 mph

And

Distance cover by Alicia while speed walk  = 5 miles

Time Taken                                                      = 1 hour

So, Speed of Alicia while speed walking = \frac{Distance}{Time}

Or,                                            S 2  =  \frac{5 miles}{1 hour}

I.e                                              S 2  =  5 mph

Or,   % Rate = \frac{5}{4} ×100 = 125

Hence The % Alicia speed walking is 125 % of average walking  Answer

4 0
3 years ago
Read 2 more answers
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