A soccer player uses her head to hit a ball up in the air from a height of 2 meters with an initial vertical velocity of 5 meters per second. The height h in meters of the ball is given by \large h=-4.9t^2+5t+2 , where t is the time elapsed in seconds. How long will it take the ball to hit the ground if no other players touch it?

Answers

Answer 1

Answer:1.32 s

Step-by-step explanation:

Given

The initial height of ball H=2 m

Initial velocity u=5 m/s

Height of ball at any instant is given by

[tex]H=-4.9t^2+5t+2[/tex]

The ball will hit the ground when h=0

[tex]-4.9t^2+5t+2=0\\4.9t^2-5t-2=0\\t=\dfrac{5\pm\sqrt{25+4(4.9)(2)}}{2\times 4.9}\\t=\dfrac{5\pm\sqrt{64.2}}{9.8}\\t=\dfrac{5+8.01}{9.8}=1.32\ s\quad\text{Neglecting negative value of t}[/tex]


Related Questions

Please help this is due today!

Graph the solution of 1/4x≤2. Please use a virtual graph or draw your own.

Answers

Answer:

The solution of [tex]\frac{1}{4}x \leq 2[/tex] is [tex]\mathbf{x\leq 8}[/tex]

Graph of the solution is attached in the figure below.

Step-by-step explanation:

We need to the graph the solution of [tex]\frac{1}{4}x \leq 2[/tex]

First we will solve to find value of x

[tex]\frac{1}{4}x \leq 2[/tex]

Multiply both sides by 4

[tex]\frac{1}{4}x\times 4 \leq 2\times 4 \\x\leq 8[/tex]

So, the solution of [tex]\frac{1}{4}x \leq 2[/tex] is [tex]\mathbf{x\leq 8}[/tex]

Graph of the solution is attached in the figure below.

The graph contains both number line and on graph paper also.

heeeeeeeelllllllppppppppp

Answers

64 dollars is the sale price:))))

Answer:

Easy its 64

Step-by-step explanation:

Next time put the eqation in a calculator it will give you the answer trust me

Which of the following is a solution to this inequality?

y > 1/2x + 2

A. (1,4)

B. (-1,1)

C. (2,3)

D. (0,2)

Answers

Answer:

A. (1,4)

Step-by-step explanation:

4.139=4+ ?/100+?/1000

Answers

4.139=4+1/10+3/100+9/1000

Prove that the value of the expression:
165+164 is divisible by 17

Answers

Answer:

329 divided by 17 is 19.3529411765 so round it 19.3529 turns in to 19.353

so take that and mutiply it by 17 then you will get 329

Step-by-step explanation:

Answer:

[tex]16^{2} (272)[/tex] is divisible by 17

Proof:

In order to solve this question we will have to factor  [tex]16^{5} + 16^{4}[/tex]. We will have to do that as follows.

[tex]16^{5} + 16^{4} = 16^{3} (16^{2} + 16) = 16^{2} (272)[/tex]

From here we know the the resulting number will be equal to [tex]16^{2} (272)[/tex] now we will need to know the following property. If "b" is divisible by "c" then "ab" (where a is any integer) will also be divisible by c. In our case one of the factors is 272, and it is divisible by 17, so that means that [tex]16^{2} (272)[/tex] will also be divisible by 17.

Translate the sentence into an equation.
The sum of 3 times a number and 6 is 7.
Use the variable b for the unknown number.

Answers

The answer is 3b+6=7

Find the least common multiple (LCM) for the pair of numbers.
20, 3
Need answers like now

Answers

Step-by-step explanation:

A method for this would be the tree diagram

20

/. \

10 x 2 ( u circle 2,times with 1 will times into itself)

/ \. (nothing goes into 2)

5x2 (same goes for 5 and the rest)

5x2x2= 20

3. (cant times into itself)

so 2x5x3 = 30

LCM = 30

yo i need the answer foh dis right ha ight help me dawgggg

Answers

Answer:

-1/3

Explanation:

Answer:

Ionk dis buhh i guess it's -1 sum damm i forgot

Step-by-step explanation:

Hope dis helps ighh

Pls help and show workings due ASAP

Answers

Answer:

m = 2/3

Step-by-step explanation:

slope is equal to rise/run

rise = y2 - y1 = 7 - 1 = 6

run = x2 - x1 = 3 - (-6) = 9

simplify 6/9 = 2/3

What is the slope of the line that passes through the following g points
(6,3) and (4,-2)

Answers

Answer:

2.5

Step-by-step explanation:

The slope of the line is; [tex]\frac{rise}{run}[/tex] and can be found using the formula;

[tex]\frac{y_{2} - y_{1}}{x_{2}-x_{1}}[/tex]

Given the points;

( 6, 3 ) and ( 4, -2)

Substitute the points in and solve;

[tex]\frac{(-2) - (3)}{(4) - (6)}[/tex]

[tex]\frac{-5}{-2}\\\\\frac{5}{2}\\\\= 2.5[/tex]

graph the line witg the equation y=-x-6​

Answers

Answer:

Attached is the graph. The x-intercept is -6, and the y-intercept is -6.

Gcf/ greatest common factor and / LCM least common multiple Mang Andoy is going to put in trays of 6 eggs and 12 eggs. What is the smallest number of eggs that Mang Andoy can put using the tray. 1. What is asked? _________________________________ 2. What are given facts? _________________________________ 3. How will you solve the problem? ___________________________ 4. How is the solution done? ______________________________ 5. What is the answer to the problem? ___________________________

Answers

Answer with explanantion:

1. What is asked? The smallest number of eggs that Mang Andoy can put using the tray.

2. What are given facts?  Two kinds of tray (One can have 6 eggs , other can have 12 eggs)

3. How will you solve the problem? We need to find LCM of 6 and 12.

4. How is the solution done?

Prime factorization of 6 and 12:

6=2 x 3

12 = 2 x 2 x 3

LCM(6,12) = 2 x 2 x 3 = 12

5. What is the answer to the problem? The smallest number of eggs that Mang Andoy can put using the tray = 12

heres yo go mattty lolololololol

Answers

Answer:

x = 16

Step-by-step explanation:

71 - 15 = 56

56 ÷ 14 = 4

[tex]\sqrt{16}[/tex] = 4

Check work:

[tex]\sqrt{16}[/tex] = 4

14 x 4 = 56

56 + 15 = 71

Simplify the expression below using the distributive property

Answers

Answer:

-84-12i

Step-by-step explanation:

The one you have is the answer :)

What is the binomial expansion of (x+2y)^7

Answers

Answer:

......................................................................

The area of a rhombus is 16 cm 2 . If the length of one diagonal is 4 cm, find the
length of the other diagonal.

Answers

Given:The area of a rhombus is 16 cm². If the length of one diagonal is 4 cmTo Find:the length of the other diagonal. Solution:

Let, the length of the other diagonal be X

According to the Question:

We know that:

▶ Area of rhombus = ½ × d1 × d2

16 = ½ × 4 × d2

d2 = 32/4

8 cm

_________________________

Hope it helps u!!

Anyone know the answer?

Answers

Answer:

4.5

Step-by-step explanation:

4.5 is your answer ....&..&.&.8

Evaluate the algebraic expression 6g - 11 for g = – 5

Answers

Answer:

Step-by-step explanation:

6g - 11=(6 x -5) - 11

=-30 - 11

=-41

A rectangle of sides 5 cm and 2 cm is cut out from a bigger rectangle of sides 14 cm and 7 cm to form a new shape as shown below.
What is the perimeter of the new shape formed?

a. 46 cm
b. 40 cm
c. 22 cm
d. 20 cm

Answers

Answer: a. 46 cm

Step-by-step explanation:

(7 + 14) × 2 + 2× 2 = 46 (cm)

The perimeter of the new shape formed when a smaller rectangle is cut out is 46 cm

Given:

Smaller rectangle

length = 5 cm

width = 2 cm

perimeter of smaller rectangle = 2(length + width)

= 2(5 + 2)

= 2(7)

= 14

Larger rectangle

length = 14 cm

width = 7 cm

perimeter of larger rectangle = 2(length + width)

= 2(14 + 7)

= 2(21)

= 42 cm

perimeter of new shape = perimeter of larger rectangle + 2 × 2

= 42 + 4

= 46 cm

Therefore, the perimeter of the new shape formed when a smaller rectangle is cut out is 46 cm

Learn more about perimeter of a rectangle:

https://brainly.com/question/17297081

help pls will give brainless

Answers

Answer:

(3). h = 4√6 units ; (5). x = 3√21 units

Step-by-step explanation:

(3). "h" is geometric mean

h² = 6 × 16 = 96

h = 4√6 units

(5). h = √(7 × 20) = √140 = 2√35

x² = 7² + 140 = 189

x = 3√21 units

I WILL BRAINLIEST !!!

Mike is mixing paint for his walls. He mixes
1/6 gallon blue paint and
4/9 gallon green paint in a large container.

What fraction represents the total amount of paint Mike mixes?

Answers

Answer:  11/18

=======================================================

Explanation:

We need to add the fractions, but first we need to get each fraction to have the LCD (lowest common denominator) of 18

18 is the LCM of the denominators 6 and 9

The fraction 1/6 turns into 3/18 when multiplying top and bottom by 3

The fraction 4/9 turns into 8/18 after multiplying top and bottom by 2

Therefore,

(1/6) + (4/9) = (3/18) + (8/18) = (3+8)/18 = 11/18

So Mike has a total of 11/18 of a gallon of paint when combining the two given amounts 1/6 a gallon of blue paint and 4/9 of a gallon of green paint.

Answer both pls. True or false? explain

Answers

Answer:

False

Step-by-step explanation:

It is not because a linear function make a straight line, since it contains [tex]x^{2}[/tex] is is not linear. It creates a parabola.

I think the answer you’re looking for is
- FALSE
-I hope this helps! Enjoy the rest of your day

HELP PLEASEEEE
The diameter of Jupiter is about 10 times the diameter the Earth . Which object in the solar system has a diameter that about 10 times the diameter of Jupiter ? A)Saturn B)Sun C) Moon D) Mercury

Answers

Answer: B: Sun.

Step-by-step explanation: Jupiter is the largest mass in our solar system, other than the sun. Everything else is too small.

The object in the solar system has a diameter that is about 10 times the diameter of Jupiter is B: Sun.

What is the fundamental principle of multiplication?

Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.

We have been given that the diameter of Jupiter is about 10 times the diameter of the Earth.

We know that Jupiter is the largest mass in our solar system, other than the sun. other planets are too small.

Diameter of Jupiter = 1.43 x [tex]10^5[/tex]km

Diameter of Earth = 1.27 x 1[tex]0^4[/tex]km

Diameter of Jupiter = 10 (Diameter of Earth)

Ratio = Jupiter/Earth

Ratio =  1.43 x [tex]10^5[/tex]/1.27 x 1[tex]0^4[/tex]km

Ratio = 11.3

Since all the other planets are small; only the sun has the largest diameter than Jupiter.

Learn more about multiplications;

https://brainly.com/question/14059007

#SPJ6

Find the value of x...X=?

Answers

Answer:

The value of  x° = 134°

Step-by-step explanation:

Given the angles of a quadrilateral

100°51°75°x°

We know that the sum of interior angles in a quadrilateral is 360°.

so

100° + 51° + 75° + x° = 360°

226° + x° = 360°

subtracting 226° from both sides

226° + x° - 226°  = 360° - 226°

x° = 134°

Therefore, the value of  x° = 134°

VERIFICATION:

100° + 51° + 75° + 134° = 360°

360°= 360°

Solution:

→ 100° + 51° + 75° + x = 360°

→ (100° + 51° + 75°) + x = 360°

→ 226° + x = 360°

→ x = 360° - 226°

→ [ x = 134° ]

Thus, the value of x is 134°.

What is the recursive formula for this arithmetic sequence? 5, 9, 13, 17..​

Answers

Step-by-step explanation:

Every term that has another term preceding it is 4 more than the previous term.

The recursive formula is a(n) = a(n - 1) + 4.

Please help! This is due soon!

Answers

Answer: [tex]\sqrt{\frac{A}{\pi } }[/tex] = r

Step-by-step explanation:

The goal in this problem is to isolate the single variable, r. The original equation is A = pir^2. The first step to attempt to get r on its own is to divide each side of the equation by pi.

A = pir^2

A/pi = pir^2/pi

A/pi = r^2

Next, find the square root of each side to get r on its own:

A/pi = r^2

sqrt(A/pi) = sqrt (r^2)

[tex]\sqrt{\frac{A}{\pi } }[/tex]  = r

(PLEASE HELP I WILL GIVE BRAINLIEST) Joey received a score of 80% on his math test. He solved 32 problems correctly. How many total problems were on the math test?

Answers

Answer:

40

Step-by-step explanation:

32/80 = 0.4

0.4 x 100 = 40

Answer:

40

Step-by-step explanation:

it just is

Can someone help me calculate angles?

Answers

Answer:

1.45

2. 135

Explanation:

1.  With a triangle all angles have to add up to 180, so what you would do is add up both angles we already know (43+92=135), then we subtract the sum from 180, (180-135=45) now you know the third angle.

2.  Just like a triangle, when finding angles on a line, it has to add up to 180. We already know that point M has an angle of 45 from the last problem, so all we have to do is subtract 45 from 180 (180-45=135). THats the measurement on TMS

Find the coordinates for the midpoint of the segment with endpoints given.
(12, 4) and (-8, 8)
O (2,6)
O (10,6)
O (2, 2)

Answers

Answer:

(2, 6)

Step-by-step explanation:

( [tex]x_{1}[/tex] , [tex]y_{1}[/tex] )

( [tex]x_{2}[/tex] , [tex]y_{2}[/tex] )

Coordinates of midpoint are

( [tex]\frac{x_{1} +x_{2} }{2}[/tex] , [tex]\frac{y_{1} +y_{2} }{2}[/tex] )

~~~~~~~~~~~~~~

(12, 4)

(- 8, 8)

( [tex]\frac{-8+12}{2}[/tex] , [tex]\frac{8+4}{2}[/tex] ) = (2, 6)

Help me please!

Correct answer get's brainliest :D

Answers

answer:

step by step explanation:

make all numbers the same decimal,fraction or percentage and then compare

3/8=37.5%

-2.8=20.8%

0.053=5.3%

-2.8%

ascending means from smallest to biggest so the answer would be 0.053

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