WILL MARK BRAINLIEST TIMED HELP!

The height of an arrow that is shot upward at an initial velocity of 40 meters per second can be modeled by h=40t-5t^2 where h is the height in meters and t is the time in seconds. Find the time it takes for the arrow to reach the ground.

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Answer 1

Answer:

its 8 seconds :)


Related Questions

please helpppppppppppppppppppppppppp

Answers

Answer:

C- Distrubituve

Step-by-step explanation:

(I hope im right!!)

Distributive is basically : a(b+c) = a x b + a x c

So c satisfies this

Solve (y–3)2 – 32 = 0, where y is a real number.
Simplify your answer as much as possible.
If there is more than one solution, separate them with commas.
If there is no solution, click "No solution."
y = 0
Х

Answers

Answer:

[tex] \sqrt{32} + 3[/tex]

[tex] - \sqrt{32} + 3[/tex]

Step-by-step explanation:

Use foil method

[tex](y - 3) {}^{2} [/tex]

[tex](y - 3)( y - 3)[/tex]

First multiply y and y

[tex]y \times y = {y}^{2} [/tex]

Next Multiply Outer term y and -3.

[tex]y \times - 3 = - 3y[/tex]

After that ), Multily inner tern -3 and y

[tex] - 3 \times y = - 3y[/tex]

Finally multiply -3 and -3 and you get 9.

Then combine all

[tex] {y}^{2} - 6y + 9 - 32 [/tex]

[tex] {y}^{2} - 6y - 23[/tex]

Now I'm going to complete the square. First get only the y value on the left side so we first set this equal to zero then move add 23 on both sides.

[tex] {y}^{2} - 6y - 23 = 0[/tex]

Add 23

[tex]y {}^{2} - 6y = 23[/tex]

Apply formula

[tex] (\frac{b}{2} ) {}^{2} [/tex]

where b is the coefficient.

plug it in

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

Which is -3 squared which equal 9.

Then add 9 on both sides

[tex] {y}^{2} - 6y + 9 = 23 + 9[/tex]

23+9=32

Now let factor the left side

the only number that adds to -6 and multiply to 9 is

-3 so we would rewrite the left side as

[tex](x - 3) {}^{2} = 32[/tex]

Now take the sqr root of 32

[tex] \sqrt{(x - 3) {}^{2} } = \sqrt{32} [/tex]

Then add 3 on both sides

[tex]x + - 3 + 3 = \sqrt{32} + 3[/tex]

A sqr root of a number can be positive or negative so

the answer is

[tex] - \sqrt{32} + 3[/tex]

[tex] \sqrt{32} + 3[/tex]

two lines of regression are 8x-10y_66=0,40x-18y-214 =0 find mean value of x and y

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Step-by-step explanation:

The answer in this picture:)

Write a word description of the set.
{10, 11, 12, 13, ...}

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this set of numbers counting by ones or the addition of one each time
It would be the addition of one.

Tall hedges are shading a rose garden. At the time the gardener wants the garden to be in sunlight, a four- foot vertical pole casts a five foot shadow. Suppose that we want to cut the hedges back only to a height of 8 feet. How far must the edge of the garden be from the base of the hedge if we do not want any part of the rose garden to be in the shade?

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Answer:

Step-by-step explanation:

A 4-ft pole casts a 5-ft shadow, so an 8-ft hedge casts a 10-ft shadow. Tge hedges must be 10 ft from the garden.

Which expressions are equivalent 3p +15 choose all that apply

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Answer:

Although you didn't give us the expressions, I'm assuming one of the correct answers would be 3(p+5) by factoring out a 3.

describe a family member in 3-5 sentences (use nouns) make it easy and simple please!!

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Ok! ———- is ———- because of ————. They have ———- hair color and ———— eye color. I think they are ———— because of ————. They like to —————- because —————.

The watch at Macys is $400. The store is having a sale and everything is 30% off. What is the final price of the watch?

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Answer:

The price of the watch is 280$

Step-by-step explanation:

We know that the original price is 400 dollers, and its on sale for 30%.

So we do 30% of 400 = 120$

finally we do, 400$ - 120$ = 280$

so the final price of the watch is 280$

hope this helps

The product of a number is 12 decreased by 13 is 611. find the number.

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Answer:

Как дела лллллрпрорп

Step-by-step explanation:

6 54всм6нен

Select the best answer.

tan x tan x/2=

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Tan 2 x-2 tan x=0
Tan x (tan x-2 ) =0
A tan x=0 —> x=0 and x =K π
B tan x=2 —> x=63.43 +k180 deg

The best solution is,

tan(x)tan(x/2) = 1 - [(tanx + tanx/2 )/tan(3x/2)]

What is tangent function?

One of the six fundamental functions in trigonometry is the tangent function. As stated, Tan A = Opposite Side/Adjacent Side is the Tangent Formula. Tangent may be modeled using sine and cosine as follows: Tan A = Sin A / Cos A.

Given:

tan(x)tan(x/2)  = ?

We will use formula,

tanA×tanB = 1 - [(tanA + tanB )/tan(A+B)]

Substituting the values,

tan(x)tan(x/2) = 1 - [(tanx + tanx/2 )/tan(x+x/2)]

tan(x)tan(x/2) = 1 - [(tanx + tanx/2 )/tan(3x/2)]

Therefore, 1 - [(tanx + tanx/2 )/tan(3x/2)] is the solution.

To learn more about the tangent function;

https://brainly.com/question/22043858

#SPJ5

Find the area:
HELP PLEASE

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Answer:

Area = 30.3 ft²

Step-by-step explanation:

Area = area of a semicircle + area of a rectangle

= (½*πr²) + L*W

Where,

radius (r) = ½ of 4 = 2 ft

Length (L) = 6 ft

Width (W) = 4 ft

Plug in the values

Area = (½*π*2²) + (6*4)

Area = 30.3 ft² (nearest tenth)

Find the length of line AC. Use that length to find the length of line CD. What is the length of line CD? Round to the nearest tenth.
a. 2.3 cm
b. 4.0 cm
c. 10.7 cm
d. 18.6 cm

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Is it either C or D not 100% but it is one of those hope this helped

Answer:

C on edge 2021

Step-by-step explanation:

I need help I am confused

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Answer:

7/5 or 1 2/5

Step-by-step explanation:

I made the proper fractions into improper fractions.

Ex : 3 1/5 as an improper fraction is 16/5

Ex : 1 4/5 as an improper fraction is 9/5

16/5 - 9/5 = 7/5 or 1 2/5

IS THIS A FUNCTION ? YES OR NO ????

ILL GIVE 40 POINTS DONT LIE !!

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Answer:

no it is not a function. .

Answer:

Step-by-step explanation:

No, it does not pass the  vertical line test

What additional information must be known to prove the triangles similar to SAS?

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Answer:

Option A) is the right answer because for SAS property we need to verify that the sides are equal to each other in the triangles.

Help please !!

You obtain an correlation value of r = -0.42 between the percent of returning birds and the number of new adults that join a bird colony. Fill in the blank: The correlation is ____
and weakly linear.

1. Zero
2. Moderate
3. Positive
4. Strong
5. Negative

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i believe its moderate

A standard six-sided die is rolled.
What is the probability of rolling a number greater than or equal to 3? Express your answer as a simplified fraction or a decimal rounded to four decimal places.
Tables
Keypad

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Answer:

Step-by-step explanation:

There are six sides on the die...

1, 2, 3, 4, 5, 6

Greater than or equal to 3 includes 3, 4, 5, 6

This means 4 out of 6, or 4/6

4/6 simplified is 2/3

Hope this helps!

c. (4 points) The p-value for this study is 0.0002. Provide an interpretation of this p-value
("the p-value is the probability that...)

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Answer: yes

Step-by-step explanation:

Give me 3 equivalent fractions for 10/30

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Answer:

1/3, 100/300, 20/60

Step-by-step explanation:

Just multiply or divide the numerator and denominator with the same number.

Hope this helps you :)

Does the following graph display a function

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Answer:

NO because it fails the vertical line test.

Step-by-step explanation:

When you do the VLT, it should only touch the figure once but if you the VLT it touches the figure twice.

Write a system of linear inequalities so the points (1, 2) and (4, −3) are solutions of the the system, but the point (−2, 8) is not a solution to the system.

Answers

Answer:

y ≤ -5/3x + 11/3

Step-by-step explanation:

line pass : (1,2) (4,-3)

slope (m) = (-3 - 2) / (4 - 1) = - 5/3

equation: (y-2) / (x-1) = -5/3               y-2 = -5/3x + 5/3

y = -5/3x + 11/3

(-2,8) : not solution    y ≤ -5/3x + 11/3

Answer:

y < -x + 4

y < x + 4

Step-by-step explanation:

To answer this problem, it is easiest to first plot the three points.

Then draw two lines that intersect below point (-2, 8) on the y-axis.

Then find the equations of the two lines, and write two inequalities based on the lines that intersect below the lines.

y < -x + 4

y < x + 4

(-24)+19= please let me know​

Answers

Step-by-step explanation:

(-24)+19

= 19 - 24

= -5 (Ans)

Answer:

[tex]\tt{} - 5 \\ [/tex]

Step-by-step explanation:

[tex]\tt{}( - 24) + 19 \\ \\ \tt{}19 - 24 \: \: \: \: \: \: \\ \\ \tt{} - 5 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \\ \\ [/tex]

There were 10 cupcakes on a plate and 7 kids who are trying to share it. How can they share the cupcakes ?

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They can split them in half and throw the rest out so no one gets jealous

someone help me lol..

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Answer:

1/3x + 3 is the correct answer, hope it help

Multiply 7/16 x 2 2/7reduced to lowest terms

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The product of the fraction reduced to the lowest term is 1

Product of fractions

Fractions are written as a ratio of two integers. Given the products of fractions below

7/16 x 2 2/7

Convert mixed to improper

7/16 x 16/7

Take the product

7/16 x 16/7 = 7/7 * 16/16

7/16 x 2 2/7 = 1

Hence the product of the fraction reduced to the lowest term is 1

Learn more on product of fractions here: https://brainly.com/question/6109670
#SPJ1

what is -10 as a percent

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-1,000%

Hope I helped you!Success!

-0.1 is your answer!

Select all of the expressions that are equivalent to 4 + w + 12w

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Answer:

Step-by-step explanation:

the selections that are equivalent to 4 + w + 12:

1st and 3rd

Annika is painting a rectangular wall. She paints 1/2of the wall yellow. Then, she changes her mind and paints 1/4 of the yellow part blue. What
fraction of the wall does Annika paint blue?

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Answer:

3/4

Step-by-step explanation:

(½-¼)+½=

¼+½=

¾

Nasa book po nmin yan

Given that IG FT which of the following statements is true

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Answer:

C

Step-by-step explanation:

Simplify the expression please with step
[tex] \sqrt{13 - 4 \sqrt{3} } [/tex]

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Answer:

[tex] \huge \boxed{ \boxed{ \red{2 \sqrt{3} - 1}}}[/tex]

Step-by-step explanation:

to understand thisyou need to know about:redicalsimplifying redicalPEMDASgiven:[tex]\tt \sqrt{13-4\sqrt{3}}[/tex]to do:

simplificationtips and formulas:(a-b)²=a²-2ab+b²√(a)²<=>|a|let's do:

[tex]step - 1 : define [/tex]

[tex] \tt \sqrt{13 - 4 \sqrt{3} } [/tex]

[tex]step - 2 : simplify[/tex]

[tex] \tt use \: the \: 1 \: formula : \\ \tt \sqrt{ 1 + 12 - 4 \sqrt{3} } \\ \tt \sqrt{1 - 4 \sqrt{3} + 12} \\ \tt \sqrt{ {(1)}^{2} - 2.1.2 \sqrt{3} + {(2 \sqrt{3}) }^{2} } \\ \sqrt{ \tt (1 - 2\sqrt{3} {)}^{2} } [/tex][tex] \tt use \: the \: 2 \: formula : \\ \tt |1 - 2\sqrt{3} | \\ \tt - (1 - 2 \sqrt{3} ) \\ - 1 + 2 \sqrt{3} \\ 2 \sqrt{3} - 1[/tex]

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