Mathematics High School

An object is launched at 9.8 meters per second (m/s) from a 308.7-meter tall platform. The function that represents the object's height s at time t seconds after launch is
s(t) = −4.9t2 + 9.8t + 308.7,
where s is in meters. When does the object strike the ground?

Answers

Answer 1

this is the full answer for you're Q

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An Object Is Launched At 9.8 Meters Per Second (m/s) From A 308.7-meter Tall Platform. The Function That
An Object Is Launched At 9.8 Meters Per Second (m/s) From A 308.7-meter Tall Platform. The Function That
Answer 2

The time taken by the object to hit the ground will be 9 seconds.

What is a quadratic equation?

A quadratic equation is a polynomial with a degree of 2 or the maximum power of the variable is 2 in quadratic equations. It has two solutions as its maximum power is 2.

Given that an object is launched at 9.8 meters per second (m/s) from a 308.7-meter tall platform. The function that represents the object's height s at time t seconds after launch is

s(t) = −4.9t²+ 9.8t + 308.7

To find the time taken put the function equal to zero.

−4.9t²+ 9.8t + 308.7 = 0

t² - 2t - 63 = 0

t² - 9t + 7t - 63 = 0

t ( t - 9 ) +7 ( t - 9 ) = 0

( t - 9 ) ( t + 7 ) = 0

t = 9 and -7(ignore)

t = 9 seconds

Therefore, the time taken by the object to hit the ground will be 9 seconds.

To know more about a quadratic equation follow

https://brainly.com/question/2264627

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Related Questions

Write a quadratic function [tex]f[/tex] whose only zero is 12.

Answers

Answer:

f(x) = (x - 12)²

Step-by-step explanation:

If a quadratic function has only one zero, then it has multiplicity of two as it is a second degree polynomial and should have two roots. Since one root is a real number, the second root is also a real number being same as the first number.

The function could be:

f(x) = (x - 12)²

We know the rule for single zero of quadratic equations

[tex]\\ \sf\longmapsto g(x)=(x-n)^2[/tex]

[tex]\\ \sf\longmapsto g(x)=(x-12)^2[/tex]

Done

pleases help me! with my math hw!!! please do 2-26 evens only!!!! thx!! will give brainliest and extra points!!

Answers

I can’t read some of the questions but I got some.
4. 8*12=96 eggs
5. D
6. 190mm
7. 1/6 of a circle is shaded so 16.67%
8. 290
9. 500+2=502
10. 4700=(4*10^3)+(7*10^3)
23. 1240+186=1426
25. time would be 11:59 pm

Help me with this pls!!!

Answers

Weight in pounds is shown on the x-axis (bottom) of the graph, and the cost is shown on the y-axis (side) of the graph.

We can see that 2 pounds of pineapples is roughly worth $2.50.

To find the cost of 1 pound of pineapple, divide the cost by 2 and we will get $1.25.

Determine the equation of the line.

Answers

Answer:

y = 5x -10

Step-by-step explanation:

The y-intercept is -10, as in, the line on the y-axis is at -10

The slope is 5, as in, the line is moving up 5 and right 1. So it should be 5/1x but you don't need the 1. You could use it, but you don't need to. Here's what it would look like if you did use it:

y = 5/1x - 10

3 in
3 in
Perimeter:
Area:

Answers

Step-by-step explanation:

The area = 3 × 3 = 9

The perimeter = 2(3 +3) = 12

please give me a brainliest answer

Answer:

A= a^2, which is 9.

P= 4a, which is 12.

Which measurement is equal to 24 kilograms

Answers

Answer:

24000 grams

Hard to explain. Hope this helped! Please give brainliest.

Answer:

yep

Step-by-step explanation:

Can you pls help me??

Answers

Answer:

[tex] \sqrt{10} [/tex]

Step-by-step explanation:

use

a^2 +b^2=c^2

c² = a² + b²

c² = 3² + 1²

c² = 9 + 1

c² = 10

c = √10

Which method used to determine numbers of bacteria in a sample involves the preparation of a series of dilutions of the sample in sterile water, adding measured volumes of each dilution to melted nutrient agar plates, making pour plates, incubating, counting colonies, and multiplying colony counts by dilution factors to determine the number of bacteria in the sample

Answers

Answer:To obtain a readily counted and statistically accurate number of bacteria. When performing a standard plate count using the pour plate method, the dilutions are first made, and then measured aliquots of each dilution are cultured.

Step-by-step explanation:

PLEASE HELP. WILL GIVE A BRAINLY. What is the range of the function?

Answers

Answer:

c is the correct option.

Step-by-step explanation:

The graph curves at y = -2 and above thus for the range of the graph is c.

What is the equation of the line that passes through the point (-8,-7) and has a slope of 1?

Answers

Answer:

y = x + 1

Step-by-step explanation:

find the value of x using the triangle

Answers

X=13 is the awnser for this

Answer:

x=13

Step-by-step explanation:

See attached image. If you have any questions, let me know!

Find the value of X. Round the length to the nearest tenth.
A. 9.0 yd
B. 31.2 yd
C. 10.4 yd
D. 15.6 yd

Answers

Answer:

C. 10.4 yd

Cause why not?

Express the inequality using interval notation. PLEASE HELP DUE TONIGHT WILL GIVE BRAINLIEST

Answers

Answer:

Convert the inequality to interval notation.

(-∞, 0) ∪ (7, ∞)

The square root of the sum of 69 and 31 is an/a_____?
A.Rational Number
B.Irrational Number
C.Both rational and irrational
D.Neither rational nor irrational​

Answers

Answer:

A. Rational number

Step-by-step explanation:

If you add both 69 and 31 it will give you 100. The square root of 100 is 10 and therefore it is a rational number

answer the equation please <33

Answers

Answer: Total cost = 4m

Step-by-step explanation:

Each meal is $4, so the total would be the number of meals times $4/meal: Total = 4m

Answer:

dₙ = (m-1)*4

Step-by-step explanation:

d1: initial dollar   d1=0

dₙ = (m-1)*4

d₁ = (1-1)*4 = 0

d₂ = (2-1)*4 = 4

d₃ = (3-1)*4 = 8

easy one - giving brainly if correct!​

Answers

Answer:

option 4 is the right answer

Answer:

The last option is right

Mrs. Blake needs to hire a babysitter. Kelsey charges $6 per hour plus a $5 fee. Lauren charges $4 per hour, plus a $10 fee. Mrs. Blake set up this equation to figure out for what amount of time both babysitters charge the same.

6h + 5 = 4h + 10

What is the correct sequence of steps to solve Mrs. Blake’s equation?
A. Subtract 6h from both sides. Subtract 5 from both sides. Divide each side by –2.
B. Subtract 4h from both sides. Subtract 5 from both sides. Divide each side by 2.
C. Subtract 4h from both sides. Add 5 to both sides. Divide each side by 2.
D. Subtract 4h from both sides. Subtract 5 from both sides. Divide each side by 6.

Answers

Answer: The answer is B.

Step-by-step explanation: I took the test (:

Answer:

b

Step-by-step explanation:

The sum of a number and seven more than the number is 43. What is the number?

Answers

Answer:

18 is the number good luck

Step-by-step explanation:

18+25=43

Answer:

18,25

Step-by-step explanation:

May I please receive help?

Answers

Answer:

The answer is in the included image

1. How much simple interest is earned on $3,000 in 9 years at an interest rate of
4.5%?


Can anyone help please? This is due tomorrow and I don’t understand this

Answers

Answer:

I = $1,215

Step-by-step explanation:

Principal (P ) = $3,000

interest rate (R ) = 4.5% or 0.045

time (in years) ( t )= 9

Use the simple interest formula:

I = P × r × t

I = $3,000 × 0.045 × 9

I = $1,215  

Therefore, the simple interest earned on a $3,000 investment after 9 years is $1,215.

What expression is equivalent to 4 to the power of 4 times 4 to the power of -9

Answers

4^4 * 4^(-9) = 4^(4-9) = 4^(-5) or 1/(4^5)

Let fat be the explanatory variable and calories be the response variable; which scenario best describes ŷ = 121 + 1.42x?
The amount of calories in a cheeseburger increases by 1.42 for every one gram of fat. The calorie amount estimated by this model is 121 if there are zero grams of fat.
The amount of calories in a cheeseburger increases by 121 for every one gram of fat. The calorie amount estimated by this model is 1.42 if there are zero grams of fat.
The amount of fat in a cheeseburger increases by 121 grams for every one calorie.
The fat amount estimated by this model is 1.42 grams if there are zero calories.
The amount of fat in a cheeseburger increases by 1.42 grams for every one calorie.
The fat amount estimated by this model is 121 grams if there are zero calories.
The amount of calories in a cheeseburger increases by 1.42 when there are zero grams of fat.
The calorie amount estimated by this model is 121 if there is one gram of fat.

Answers

Using linear function concepts, it is found that the correct option is:

The amount of calories in a cheeseburger increases by 1.42 for every one gram of fat. The calorie amount estimated by this model is 121 if there are zero grams of fat.

A linear function is modeled by:

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

In which:

m is the slope, which represents by how much y changes when x changes by 1.b is the y-intercept, which is the value of y when x = 0.

In this problem:

The explanatory variable fat is the input.The response variable calories is the output.

The equation is:

[tex]y = 121 + 1.42x[/tex]

The slope is of 1.42, which means that the amount of calories increases by 1.42 when the amount of fat increases by 1 gram.The y-intercept is of 121, which means that if there are 0 grams of fat, there will be 121 calories.

Thus, the correct option is:

The amount of calories in a cheeseburger increases by 1.42 for every one gram of fat. The calorie amount estimated by this model is 121 if there are zero grams of fat.

A similar problem is given at https://brainly.com/question/16302622

5 find the missing length

Answers

Answer:

A i belive

Step-by-step explanation:

which expression is equivalent to the given expression after using the distributive property? 9 + 5 + 7x² + 3x²y + 2x²​

Answers

Answer:

9 and 5 I guess enjoy.

.

Step-by-step explanation:

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Please help!! If you can, thanks so much :))

Answers

Answer:

The answer to the question is (2,-3).

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Answers

Answer:

46.6 is 69.5522% of 67

Step-by-step explanation:

brainliest plz

I HAVE MORE PLS HELP IT’S DUE TOMORROW

Answers

Answer 1:

[tex]y = \frac{9}{5} - \frac{6x}{5}[/tex]

Answer 2:

[tex]y = 3 - \frac{8(x+7)}{7}[/tex]

Note:

User stated an explanation was not needed.

Someone please help me with this problem! Will mark brainliest!

Answers

Answer:

I need a question, then I will help

Step-by-step explanation:

Where is the question at, I can help you with it easy.!

Please tell me the answer by process​

Answers

Answer:

1680/10= 168

168/2= 84

84 is the answer

Step-by-step explanation:

1680/10 bc u have to get rid of the volume height and that leaves two bases

168/2 bc u only need one side NOT two bc of the book covers one base not two

The dimension of a cube are 3 x cm, 6xm 7xm. Then find the volume of the cube.​

Answers

Answer:ce  6x^2=216

Step-by-step explanation:

since this is a cube, the length, width, and height are the same, so they can all be replaced with one variable, x. When simplified, the equation reads 6x^2=216

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