Mathematics High School

A soccer ball is kicked from the ground with an initial upward velocity of 90 feet per second. The equation h=-16t^2+90t gives the height h of the ball after t seconds.

a. Find the maximum height of the ball.

b. How many seconds will it take for the ball to reach the ground?

Answers

Answer 1

The ball reaches a height of 126.58 ft after 2.8125 seconds

Step-by-step explanation:

The maximum height of a parabola can always be found by looking for the vertex. You can find the x value (or in this case the t value) of a vertex by using -b/2a in which a is the coefficient of x^2 and b is the coefficient of x.

-b/2a

-(90)/2(-16)

-90/-32

2.8125 seconds

Now to find the height, we input that value in for t

h = -16t^2 + 90t

h = -16(2.8125)^2 + 90(2.8125)

126.58 feet

Related Questions

please help! Complete the function for this graph.

Answers

Answer:

y = - 2|x - (-2)| + 1  

Step-by-step explanation:

The general form of an absolute value function is y = a|x – h| + k, where a ≠ 0.

The value of a determines whether the graph opens up or down.  If a is negative, the graph opens down. This holds true, as the value of a = -2

The given graph for the absolute function has a vertex (h, k) of (-2, 1). This is the maximum point of the graph.  

Therefore, the missing values on the given equation is the value of the vertex.  It has to be written as  y = - 2|x - (-2)| + 1 because the equation on your given problem is formatted according to the general form of the absolute value function,  y = a|x – h| + k.  

solve for X.

-3 + 6 = 2x - 24

a: -30
b: -6
c: 6
d: 30

Answers

Answer:

The answer should be 13.5. but it was not given.

Step-by-step explanation:

[tex] - 3 + 6 = 2x - 24 \\ 3 = 2x - 24 \\ 24 + 3 = 2x \\ 27 = 3x \\ \frac{27}{3} = x \\ 13.5 = x \\ [/tex]

Ill give you brainly if I get it correct.

Answers

Answer:

142 degrees.

The angle of a straight line is 180. The angle of EAB is given as 38 degrees. 180 - 38 = 142.

Answer:

[tex]3x - 15 = 2x + 10 \\ 3x - 2x = 10 + 15 = 2 5 \\ x = 25 \\ 3x + 15 =75 - 15 = 60 \\ ebf = 3x - 15 + 38 = 60 + 38 = 98[/tex]

cqn you please help me out​

Answers

Answer:

I mightc be able to help you out.

Last year the depth of the river was 4.2 feet deep. This year it dropped 7%. Find the depth of the river this year to cross it.

Answers

Answer:

7/100 × 4.2 = 0.294ft

(find 7% of 4.2 ft)

4.2-0.294= 3.91 ft

(subtract 7% from 4.2ft)

FINAL ANSWER: depth of river this year is 3.91 ft


Victor's Video Arcade pays its employees $7.95 per hour for weekday hours and $9.25 per hour for weekend hours. How much will an employe
working six consecutive days for seven hours per day if the employee starts working on a Monday? $_.00
rations with Rational Numbers (Calculator Inactive)
tor's Video Arcade pays its employees $7.95 per hour for weekday hours and $9.25 per hour for weekend hours. How much will an employe
working six consecutive days for seven hours per day if the employee starts working on a Monday? $ X 463
V 343.00on 1
on with Rational Numbers (Calculator Inactive)
Video Arcade pays its employees $7.95 per hour for weekday hours and $9.25 per hour for weekend hours. How much will an employee earn
king six consecutive days for seven hours per day if the employee starts working on a Monday? $_.00
ions with Rational Numbers (Calculator Inactive)
; Video Arcade pays its employees $7.95 per hour for weekday hours and $9.25 per hour for weekend hours. How much will an employee earn working six consecutive days for seven hours per day if the employee starts working on a Monday?

Answers

Answer:

i can't understand ur question

Miles and Ella have an equal number of stickers. They find ________more stickers which brings the total number of stickers to ________.How many stickers do Miles and Ella ha

Answers

They didn’t give you any numbers ??

Answer:

I just made my own numbers I put 6 in the first black and 18 in the next. the boxes just say what happened

Step-by-step explanation:

Miles and Ella have an equal number of stickers. They find ____6____more stickers which brings the total number of stickers to ____18____.How many stickers do Miles and Ella ha

MILES AND ELLAS STICKERS

FOUND STICKERS

TOTAL STICKERS

If -13(q+4) is equal to 7q+16 what’s is q

Answers

Answer:

q = - 3.4

Step-by-step explanation:

- 13(q + 4) = 7q + 16 ← distribute parenthesis on left side

- 13q - 52 = 7q + 16 ( subtract 7q from both sides )

- 20q - 52 = 16 ( add 52 to both sides )

- 20q = 68 ( divide both sides by - 20 )

q = - 3.4

For BRAINILY please help

Answers

Answer:

z=55 degree

Step-by-step explanation:

because the sides are equal let say the numbers x

2x+70=180

2x=180-70

2x=110

x=55

branlist please

i need help can some one help

Answers

Answer:

18/24 or 75%

Step-by-step explanation:

Okay so you already know that he got 16/24 which means that there were 8 questions that were wrong because 24-16= 8

So he has 16 points that we know of and 8 questions that he got wrong.

If he lost 1/4 of a point when he got it incorrect 1/4= 0.25

0.25 x 8 = 2points

So he got to points

16+ 2= 18 so now it is 18/24

If you have to show Out for 100% it would be 75%

Hope it helped!

Which table represents a linear function.

Answers

Answer:

The one you have selected is correct.

Step-by-step explanation:

Answer:

its b

Step-by-step explanation:

its b


will give brainliest




Which translation vectors could have been used for the pair of figures ?​

Answers

Answer:

Step-by-step explanation:

Base on the question where as asking to state the translation vectors could have been used for the pair of figures, base on my research, I would say  that the answer would be arrow pointing to the right.

i bought a 5 pack of wite t shirts for 26$ what is the price per shirt

Answers

Answer:

exhausted shirt is $5.20.

Answer:

5.2

Step-by-step explanation:

over here they said that for 5 t-shiets it is 26$

so,

for 1 t-shirt it will be 26÷5= 5.2

so price per t-shir will be 5.20$

PLS MARK BRAINLIEST

I want need help because I’m having trouble on this question Evaluate: 2-4 =

Answers

Answer:

the answer is 16 if that is to the fourth power

Answer:

D. 1/16

Step-by-step explanation:

[tex]b^-^n = 1/b^n[/tex]

so it is

[tex]1/2^4 = 1/16[/tex]

Have a nice day!

I BEG YOU I WILL GIVE BRAINIEST PLSSS
Marjorie wrote �� + �� using the GCF and the distributive property as �(� + ��) while Bobby wrote the expression as ��(� + �). Who correctly rewrote the expression using the GCF and why?

Answers

Answer:

its for the points  U w U

Step-by-step explanation:


Can someone please help me solve for x

Answers

Answer:

x = 8

Step-by-step explanation:

These two angles both containing an x are equal. They are called vertically opposite angles.

2x + 62 = 5x + 38               Subtract 2x from both sides

2x-2x + 62 = 5x -2x + 38   Combine

62 = 3x + 38                       Subtract 38 from both sides

62 - 38 = 3x - 38  + 38       Combine

24 = 3x                                Divide both sides by 3

24/3 = 3x/3                         Combine

8 = x

I’m generally not sure about how to solve this. I have more questions posted like this one if you would like to help! If anyone see’s this and would like to answer, please do as fast as possible.

Answers

Answer:

Below.

Step-by-step explanation:

First a reflection over the y-axis takes:

The point A (2, 0) to (-2, 0).

B goes to (-4,2) and C goes to (-6,0).

Then the rotation moves:

(-2,0) to A' (0, -2)

(-4, 2) to B' (-2, -4)

(-6,0) to C' (0, -6)

guys pls help me!!!!!!!

Answers

They would both be 92
Because the 88 and the angle next to it should make 180. So 180-88=92 and b and c are vertical angles so they would be the same.

Will mark 50 points for whoever answers correctly !

Answers

Answer:

Correctly !

Step-by-step explanation:

20/48=40/48 which proportions is true?

Answers

Answer:

is it multiple choice what are the options??

There are many possible answers to this question, there is not enough information.

But I can figure this much.

20/48 = 40/48

[FALSE]

8/5 minus 1/6 = i dont know the answer sorry

Answers

Answer:

Step-by-step explanation: 8/5-1/6

Find a common denominator

48/30-5-30=43/30

The metric system is based on multiples of 100. Please select the best answer from the choices provided A.True B.False

Answers

Answer:

true

Step-by-step explanation:

i think

A Bike rental place rents bikes for $22 plus $8 per hour. Mary paid $67 to rent a bike. Write and solve an equation to represent how many hours she rented the bike.

Answers

Answer:

8x+22=67

Step-by-step explanation:

work out the value of x. 3x? x?

Answers

Answer:

x = 67.5

Step-by-step explanation:

Exterior angles always add up to 360 degrees. We have a defined right angle which takes 90 off of our 360, giving us 270 degrees. If we have x as an individual angle and also as x 3 times, then x is appearing 4 times. To find x, we divide our 270 degrees by 4 to get 67.5  . We can check this using a reversive property by multiplying 67.5 by 4 and then adding 90.

360 - 90 = 270

270 / 4 = 67.5

67.5 = x

Solve the equation. Then check your solution.


15 (negative 42 x + 40) = 15 (negative 8 x + 244)

a.

â€"6

c.

6

b.

0.7

d.

3




Please select the best answer from the choices provided



A

B

C

D

Answers

Answer:

I think so b is the option

Connie Hamm demonstrates microwave ovens at a home décor center . She is paid $35.00 per demonstration for the first 10 demonstrations and $ 45.00 for each demonstration over 10. Also , for every microwave sold , she earns $ 20.55 . What is Hamm's commission on a day in which she makes 12 demonstrations and 4 sales ?​

Answers

Connie will make $522.20 I believe
$35.00 x 10 = $350
$45.00 x 2 = $90
$20.55 x 4 = $82.20
350+90+82.20 = $522.20

The graph shows the function f(x) = x^2 in blue and another function g(x) in red. which of the following could the equation for g(x)?

Answers

you didn’t post the picture buddy boi

g(x)=1/5x² is the equation for blue graph.

What is Graph?

Graph is a mathematical representation of a network and it describes the relationship between lines and points.

The equation of the red quadratic graph is f(x)=x²

This is the parent quadratic function or the base of the quadratic functions.

This red quadratic graph has been dilated by a certain scale factor  to obtain the blue graph.

Recall that, when the scale factor is a fraction, such that 0<k<1 the graph is stretched horizontally.

The dilated graph then becomes wider than the parent function.

From the given function equations, the possible value of k can only be k=1/5

Therefore the blue graph has equation g(x)=1/5x²

Hence, g(x)=1/5x² is the equation for blue graph.

To learn more on Graph click:

https://brainly.com/question/17267403

#SPJ2

Pls help :) need asap :)

Answers

Answer:

Step-by-step explanation:

It is not a function, a vertical line passes through two graphed points.

(-1,3) and (-1,2)

Can someone help me do this

Answers

The 3 inside angles should add up to 180. The one next to the 130 is 50 degrees.

180 = 50 + (16x + 4) + (14x + 6)

180 = 30x + 60

120 = 30x

x = 4
x = 4

First, we can see that the top angle is 130°, that means the other side of the angle is 50° because that straight line must equal 180°.

Next, we know that the inside of a triangle must equal 180°. We know that one of the angle’s is 50°, that means we need to plug in the numbers and solve the other angles until the total of all three angles is 180°.

If we plug in 4 for x, this is what we get…
14(4) + 6 = 62°
16(4) + 4 = 68°

Now we know all three angles, but we can add to check…
50° + 62° + 68° = 180°

Therefore, x = 4!

Determine whether the ordered pair is a solution of the linear equation y = 11r - 4 (0 -4)

Answers

Hi there!  

»»————-　★　————-««

I believe your answer is:  

Yes, it is a solution.

»»————-　★　————-««  

Here’s why:  

⸻⸻⸻⸻

I am assuming that 'r' is supposed to be 'x'.

⸻⸻⸻⸻

[tex]y=11r-4\\------------\\\rightarrow -4 = 11(0) - 4\\\\\rightarrow -4 = 0 -4\\\\\rightarrow \boxed{-4=-4}[/tex]

⸻⸻⸻⸻

The ordered pair is a solution. You can also tell that it is a solution because the equation given is in slope-intercept form, and '-4' is in b's spot.

⸻⸻⸻⸻

[tex]y = mx+b[/tex]

⸻⸻⸻⸻

»»————-　★　————-««  

Hope this helps you. I apologize if it’s incorrect.  

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