Mathematics High School

The height, h, of a baseball thrown upward with an initial velocity of 10
feet per second from 6 feet above the ground is modeled by the function
h = -16x2 + 10x + 6, where x is the time in seconds. How long does it
take before the ball hits the ground?

Answers

Answer 1

Answer:

1 second

Step-by-step explanation:

use the general quadratic formula

Related Questions

A large bag of marbles contains red (R) and blue (B) marbles. Marbles are pulled one at a time, recorded, and placed back in the bag. Estimate the percentage of blue marbles in the bag.
R R R B R R R R R R B R R R B

A. 60%


B. 80%


C. 25%


D. 20%

Answers

The answer will be A.

Answer: 20%

Step-by-step explanation:

3/15= 1/5= 20%

A teacher is interested in students' opinions about an upcoming school dance. Which of the following techniques
uses systematic random sampling?
Survey the first 10 students who arrive.
Survey every 10th classroom as the teacher walks down the hallway.
Survey the 10th student arriving at school (with the number 10 being randomly chosen), then survey every 12th
student after that
O Survey the 10th student arriving at school (with the number 10 being randomly chosen), then survey every other
boy and every other girl after that.

Answers

Answer:

think its c but not sure

Step-by-step explanation:

 because it repeats its self to get i sample

Answer and Step-by-step explanation: yes it's C i got it right so did the person above me

There are 645 students at Tech Middle School, and
20% of the students are th graders, How rising
Students are 7th graders? ?

Answers

Answer:

.20

Step-by-step explanation:

The word percent literally means "Out of 100". With that being said, 20% can be written as a fraction, mixed number or whole number as follows: 1/5 (fraction), 20/100 (mixed number) or .20 (whole number).

3. Adam bought 3 pens and 4 pencils for $4.25. Lily bought 2 pens and 6 pencils for $4.50. How much is a pen? a pencil?​

Answers

Make two equations
Let x = pen
Let y = pencil
3x + 4y = 4.25
2x + 6y = 4.50
Make both coefficients equal
(3x + 4y = 4.25) * 2
(2x + 6y = 4.50) * 3
6x + 8y = 8.5
6x + 18y = 13.5
Subtract both sides
-10y = -5, y = 0.50
3x + 4(0.50) = 4.25
3x + 2 = 4.25
3x = 2.25, x = 0.75

Pen = $0.75
Pencil = $0.50

Can yall help me with this pls its due rn and im cryinggggg ill definetly give brainliesttt : (

Answers

Answer:

In the first box, put 24y

In the second box, put 16

Step-by-step explanation:

3y x 8 = 25y

8 x 2 = 16

Hope that helps! :)

<3 Cin

24y in the first and 16 in the second! you’re just multiplying :)

help I don't understand​

Answers

Answer:

Sequence: Reflection over the y-axis, then 1 to the right and 2 down to get the triangle ABC to A'B'C.

Step-by-step explanation:

Have a nice day!

Please help fast!

Solve 2/3x-1/5>1

X>?

Answers

Answer:

x > 9/5

Step-by-step explanation:

2/3 x - 1/5 > 1

15 × 2/3x - 15 × 1/5 > 15 × 1

10x - 3 > 15

10x > 18

x > 18/10

x > 9/5

Which number line shows the solution to the inequality 4x + 5 >9?

Answers

Answer:

C.

Step-by-step explanation:

PLEASE ANSWER ASAP WILL GIVE POINTS!!!!

Answers

B. 2EF3 + 3G2H --> 6GF + E2H3

A box contains 2 red marbles, 3 white marbles, 4 green marbles, and 1 blue marble find the probability of selecting a white marble in the first draw and a red marble in the second draw

Answers

Answer:

Answers

Selecting a green marble on the second

draw if the first marble is blue.

Answer:

Selecting a white marble on the first

draw and red marble on the second

draw.

Answer:

Selecting a red marbles on both draws.

Answer:

Selecting a red or white on the first

draw and green or blue on the second

draw.

Answer:  

Selecting a white marble on the first

draw and a white or blue on the second

draw.

Step-by-step explanation:

Which of the following are parallel to
y = 3x – 2
(Choose all that apply)


y = 5 – 3x

Y= 3x

y = 3x – 1

y = 3x – 4

y = -3x

Answers

y = 3x
y = 3x - 1
y = 3x - 4

i’m pretty sure in order for lines to be parallel, they have to have the same slope but different y- intercepts

Answer:

y=3x-1,y=3x-4

Step-by-step explanation:

y=mx+c

where is gradient, parallel lines have same gradient

y=5-3x

=-3x+5

m=-3

y=-3x

m=-3

y=3x-1

m=3 ,the gradient is equal to the original equation

y=3x-4

m=3,the gradient also equal to the given equation

A bookcase contains these books. 36 cookbooks 17 autobiographies
39 novels 22 reference books One book is selected at random from the bookcase. Based on the information, which statement is true?
A The book is twice as likely to be a cookbook as a reference book.
B The book is just as likely to be a novel as it is to be an autobiography or a reference book.
C. The book is more likely to be a cookbook than a novel.
D. The item is half as likely to be a reference book as a novel.

Answers

Answer:

A

Step-by-step explanation:

5k(k-9)=0 solve for k

Answers

Step-by-step explanation:

5k²-45= 0

5k²= 0 +45

k²= 45/5

k²= 9

or

k = 9/2 = 4.5

Adealer gained a 10% profit by selling an article for birr 330.00 .What was the original price of the article

Answers

Answer:

$297

Step-by-step explanation:

Given data

Percent profit=10%

sales price= $330

% profit= (sales price-cost price)/sales price* 100

let the cost price be x

Substitute

10= (330-x)/330* 100

cross multiply

10= (33000-100x)/330

10*330= 33000-100x

3300=33000-100x

3300-33000=-100x

-29700=-100x

29700=100x

x=29700/100

x=297

Hence the cost price is

cost price=$297

Last Saturday, Emily and Lauren went to the ice cream shop. Enter an expression showing how much they spent together if Emily spent $4.53 and Lauren spent d dollars.

Answers

Answer:

With the information provided, you can say that the total amount they spent together would be equal to the result of adding up the amount Emily spent plus the amount Lauren spent, which would be:

Amount Emily spent: $4.53

Amount Lauren spent: d

The expression is:

x=4.53+d, where:

x is the amount they spent together

d is the amount Lauren spent

Find the perimeter of the figure to the nearest hundredth.
12 in.
5 in.
5 in.
9 in.
perimeter: about
in.

Answers

Answer:

50.28 inches

Step-by-step explanation:

From the Image, we can find the length of the arc of the semi-circle by dividing the circumference of the resulting circle by 2

Radius= 9in

C= 2πr

C=2*3.142*9

C=2*3.142*9

C= 56.556 inches

Hence the length of the arc is

=56.556/2

=28.278 inches

The perimeter of the shape

=28.278+5+12+5

=50.28 inches

Answer:

its actualy 50.26, but follow what the guy before me did.

Step-by-step explanation:

 

A store at the mall is having a sale of 30% off all coats, "c". The expression 0.7c describes the discounted price in dollars for a coat. Which expression also describes the discounted price in dollars, for a coat?
A. 0.7c
B. c - 0.7c
C. c - 0.3c
D. c - 0.3

Answers

Answer:

c

Step-by-step explanation:

Help? I don’t understand it mainly cause HOW ARE YOU SUPPOSED TO

Answers

Answer:

83

supplementary is two angles that add up to 180 so 180 - 97= 83

The weight of 4 eggs is shown. Identify the constant of proportionality of total weight to number of
eggs.
The weight of 4 eggs is 188 g

Answers

Answer:

47g

Step-by-step explanation:

Dillon deposited 3/4 of his paycheck
into the bank. The deposit slip shows how much he deposited.($46.50)
Write and solve an equation to find the amount of his
paycheck.
Equation:
Solution:

Answers

Answer:

His paycheck was $62.

Step-by-step explanation:

3/4 x = 46.5

x = 46.5 * 4/3

x = 62

Equation: 3/4 x = 46.5

Solution: x = 62

The length of a rectangle is 9 centimeters more than half
the width. Find the length if the perimeter is 60 centimeters.

Answers

Answer:14 width length 16

Step-by-step explanation: 14 is the width if u double it you get 28 and yo need 32 more so 14 / 2 + 9 = 16 and double that gets 32 soo boom

What expression is equivalent to 6(3x + 7)

Answers

6(3x + 7)

X = 2

auihaiodg[aijg[aoidjg[aiogj[aiosjdg[ioajsg[io [aioj[oisdjg[i ajs[ia [iogja[ idfg[aidj fg[iajag[piojdg[ isj [i ja[j [ija [i j

Answer:

18x+42

Step-by-step explanation:

Hello, to find an equivalent expression to your problem, you would distribute 6 to 3x+7 (Remember, distribute means multiply). After distributing, you get the answer which is 18x+42.

wo
Points A, B, C, and D are plotted on the number line.
ABC D
tott
-0.6 -0.4 -0.2
-0.8
Which point is plotted at -0.45?
A

Answers

Answer:

D.

Step-by-step explanation:

The answer is D because it is "-0.4" it doesn't show the 5 at the end but that doesn't mean that its not there.

Hope this helped :)If you have anymore questions please ask.

I need 5

This is the picture..

Answers

Answer:

What are the options?

CPCT?

Ms. Gonzales is investing $17000 at an annual interest rate of 6%
compounded continuously. How much money will be in the account after
16 years? Round your answer to the nearest hundredth (two decimal
places).

Answers

Answer:

$30444.41

Step-by-step explanation:

→ Work out compound interest

(100 + 6) ÷ 100 = 1.06

→ Multiply the amount by the money

17000 × 1.06

→ Find how many years it is for

17000 × 1.06¹⁰ = 30444.41

A triangle has sides with lengths of 12 centimeters, 16 centimeters, and 20 centimeters. Is it a right triangle?

Answers

Answer:

yes

Step-by-step explanation:

The bases are right triangles with side lengths of 12 centimeters, 16 centimeters, and 20 centimeters.

Answer:

yes

Step-by-step explanation:

If you use the formula [tex]a^{2} +b^{2} =c^{2}[/tex] you get 20 which confirms that is a right triangle

if y=5 x=9 find m and solve y=m+3x​

Answers

Answer:

- 22

Step-by-step explanation:

Given

y = 5 and x = 9

then

y = m + 3x

5 = m + 3 * 9

5 = m + 27

m = 5 - 27

m = - 22

hope it helps :)

the answer would be -22

Can sides of a triangle have lengths 1, 13, and 14 ???

Answers

Answer: Yes it can!

Step-by-step explanation:

This is called a scalene triangle, where all 3 sides are different lengths.

helpppp needed


tysm for everyone helping btw :)

i put points at 35 xx

Answers

Answer:

10ft.

Step-by-step explanation:

1yd = 3ft.

3yd = 9ft. + 1ft= 10ft.

Answer:

I think the answer is 3.04800

or just 10ft.

A light post is 4 ft tall and cast a shadow of 5 ft. Find the distance between
the top of the post and the end of the shadow.

O 9 ft
O 6.4 ft
O 3 ft
O 4 ft

Answers

Answer:

6.4 ft

Step-by-step explanation:

Let “a” be the light post height

Let “b” be the length of the shadow

Let “c” be the distance from the top of the light post to the end of the light post’s  shadow.

Then:

(a X a) + (b X b) = c X c

The Pythagorean Theorem will work pretty well here:

(4 X 4) + (5 X 5) = 16 + 25 = 41

The square root of 41 is: 6.4023

So, about 6.4 ft from the top of the post to the end of the shadow

Answer:

6.4ft

Step-by-step explanation:

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What are two possible changes to environmental factors that could cause the population in area B to experience positive population growth that would allow it to reach the same carrying capacity as the population in area A? All of the following are examples of executive checks on the legislative branch EXCEPT-The President removing members of Congress from office when they disagree with him-Carrying out a law in a way other than Congress intended-The Vice President breaking a tie in the Senate-Calling a special session of Congress Which of the following protocols help IP in multicast service?Select one:ORARPO CMPO ARPO IGMP Can you please help me with these questions in this link!https://www.geogebra.org/classroom/ayzub3c4 SPANISH ASSIGNMENT! FIFTEEN POINTS.Pls, don't go to other answers and just paste because I need something new.Know the requirements for your presentation.In one sentence, say which room is your favorite and why. 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