Mathematics High School

1) The height, h, in feet of a ball above the ground is given by h = -16t2 + 64t+ 80, where t is the time in seconds. How long does it take the ball to hit the ground? es A) 3 seconds B) 4 seconds 95 seconds D) 6 seconds​

Answers

Answer 1

Answer:

C) 5 seconds

Step-by-step explanation:

[tex]h = - 16t {}^{2} + 64t + 80[/tex]

When the ball hits the ground, the height is 0.

[tex]0 = - 16t {}^{2} + 64t + 80[/tex]

Factor out the greatest common factor: 16

[tex]0 = - 16(t {}^{2} - 4t - 5)[/tex]

Find numbers whose sum is -5 and product is - 4.

Those numbers are - 5 and 1: - 5 × 1 = - 5, - 5 + 1 = - 4

[tex]0 = - 16(t - 5)(t + 1)[/tex]

[tex]t - 5 = 0[/tex]

Or

[tex]t + 1 = 0[/tex]

So,

[tex]t = 5[/tex]

Or

[tex]t = - 1[/tex]

Since time cannot be a negative value the correct answer is 5 seconds.

Related Questions

Solve the pair of simultaneous equations
x = 4 - y
x = y + 2

Answers

(3,1)

x=3; y=1

Step-by-step explanation:

Algebraic

Answer:

The solution to this system of linear equations is (3, 1).

Step-by-step explanation:

Here we have two equations for x.  We can eliminate x by setting these two equations equal to one another, obtaining 4 - y = y + 2, or 2 = 2y

Then y must be 1.  Substituting this into the first equation, we get x = 4 - 1 = 3.

The solution to this system of linear equations is (3, 1).

Please answer 1 and 2
Will mark brainliest!!!!

Answers

Answer:

1. No they are not parallel

2. no they are not perpendicular

Step-by-step explanation:

1. the slope for p is  5/2 mean while the slope for o is 4/2 therefore they are not parellel because the slopes are different

2. the slope for m is 2/1 and the slope for k is 3/5. inorder for them to be parelle for slope for k would have to be -1/2 and m would be 2/1 OR the slope for k would be 3/5 and the slope for m would be -5/3

slope=5, y-intercetp=3

Answers

y=5x+3

Hope this helps

Answer:

y=−5x+3. Explanation: The y-intercept on a straight line graph is always the constant. In that the constant is the value of c

Step-by-step explanation:

I NEED ANSWER NOW PLEASE TELL ME HOW YOU GOT THE ANSWER PLEASE NO LINKS ITS DUE IN 10 MINS!

Answers

Answer:

644.972

Step-by-step explanation:

6x100=600

4x10=40

4x1=4

9x(1/10)=0.9

7x(1/100)=0.07

2x(1/1000)=0.002

add all of these values up. hope this helps!

Find m angle O Y X in the diagram above.
URGENT!!

Answers

Answer:

• Angle OYW or Angle WYO is 90°

• Angle OYX or Angle XYO is 90°

• Angle WYX is 180° [ A straight line ]

Step-by-step explanation:

Line WYX is a perpendicular bisector of radius lind of the circle.

[tex]{}[/tex]

expand: -4(2x + 2) +3​

Answers

Answer:

-8x-8+3

-8x-5

that is the answer for this question and I will send you the link to mp3 and

What is the probability that the reader is a young adult given that their favorite is Asimov or Brooks?​

Answers

Answer:

7/16

Step-by-step explanation:

80 is the given amount which would become the denominator then you get the number of young adults in those sections and add them up to equal 35

then simplify

45 + 30 = 100 - w


Answer:



Explanation:

Answers

Answer:

w = 25

Step-by-step explanation:

45+30 = 100 - w75 = 100 - ww = 100 - 75w = 25
In order to work out “w”, you could begin by working backwards, starting with 100, then doing the inverse operation (subtracting 30 then subtracting 45).

100 - 30 = 70 - 45 = 25.

100 - 25 = 45 + 30

w = 25

The width of the rectangle is 50% of its length. What is the area of the rectangle?

Answers

Answer:

area = length x half of length

Step-by-step explanation:

whatever the length of the rectangle is, replace it with 'length'

for example if the length was 6cm, it would be:

length x half of length = area

6cm x (6/2) = area

6cm x 3cm = area

18cm² = area

1/3(1/6 + 5/12) - 1/36

Answers

Answer:

1/6

Step-by-step explanation:

Apply the distributive property.

1/3 x 1/6 = 2/36

1/3 x 5/12 = 5/36

Add the products.

2/36 + 5/36 = 7/36

Subtract the result by the 1/36.

7/36 - 1/36 = 6/36

Simplify the fraction.

6/36 = 1/6

-hope it helps

choose the number that is less than:3.15 x 10A.1.11 x 10B.9.9 x 10C.36,500D.3.26 x 10

Answers

The Answer is A……… hope this helps

What is 3.6% as decimal’s?

Answers

Answer:

.036

Step-by-step explanation:

.036 = 3.6%

converting percent to decimal:  remove the percent sign and move the decimal point two places to the left

Answer:

0.036

Step-by-step explanation:

To convert to a decimal, divide the percent number by 100.

3.6 ÷ 100=0.036

Therefore, the decimal form is 0.036

What another number is divider to pi 3.14

Answers

The another number is divider to pi 22/7

The another number is divider to pi 22/7

I'M MARKING BRAINLIEST PLEASE HELPPPPP

Answers

Answer:

option a is the correct answer

Step-by-step explanation:

bye

7/11 x 7/15 x 3 multiply and write your answer as a fraction in the simplest form.

Answers

Answer: 49/55

7/11 x 7/15 x 3

49/165 * 3

147/165

49/55

The answer is 49/55!

Solve the following system of equations using elimination.

5x+y=24
-5x-4y=-56

Solve for y:


Solve for x:

Answers

I believe that this is the right answer

GCF and LCM: word problems. Kiara is printing orange and green forms. She notices that 6 orange forms fit on a page, and 2 green forms fit on a page. If Kiara wants to print the exact same number of orange and green forms, what is the minimum number of each form that she could print? no links pls​

Answers

Answer:

6

Step-by-step explanation:

The LCM of 6 and 2 is 6.

A number minus 33 is at least -5

Answers

Answer:

28

Step-by-step explanation:

Put in calculator 28-33= -5

Eight children can fold 5 paper cranes in 6 minutes.


(i) How long will it take 36 children to fold 120 paper cranes?

Answers

36 girls can fold 120 paper crane s

Will give brainliest
No need to give explanation.
No links!!

The system of equations has

Answers

Answer:

One Solutions I think

Step-by-step explanation:

What is the perimeter of a rectangle whose length is twice the width? Width = 7 cm.

Answers

Answer:

42 cm is the perimeter

Step-by-step explanation:

Brainleast answer mo nalang

Answer:

P = 42 cm

Step-by-step explanation:

The perimeter (P) is the sum of the 4 sides of the rectangle with opposite sides being congruent.

Given width = 7 cm then length = 2 × 7 = 14

P = 7 + 7 + 14 + 14 = 42 cm

I have no clue

Question 7

Answers

Answer: 27[tex]a^{-6}b^{3}[/tex]

Step-by-step explanation:

you can isolate the separate terms so you get

3^3 x a^(-2x3) x b^3 = 27 a^-6b^3

Which equation represents the function shown on the graph?

y = x
y = x
y = 2x
y = 4x

Answers

Answer:

x = 0, y = 0

Step-by-step explanation:

Please help me on this question!

Answers

-8 to 8

Step-by-step explanation:

f(x) is the same as y when discussing functions. Therefore we look for the places where the line is above or touching the x axis

Here is a balanced Hanger. Each triangle weighs 2.5 pounds, each circle weighs 3 pounds, and x represents the weight of each square. Select all equations that represent the hanger

Answers

Answer:

c if am wrong please correct me

wich of the following functions maps 3 to -5?

Answers

Answer:

A

Step-by-step explanation:

Consider all options and find f(3):

A.

Then

Not -5, so this option is false.

B.

Then

This option is true.

C.

Then

Not -5, so this option is false.

D.

Then

Not -5, so this option is false.

5. Identify the type of function and the degree of the function: f(x)=6x +3x² -11
A. Quadratic, degree 3
B. Quadratic, degree 2
C. Cubic, degree 6
D. Quartic, degree 11

Answers

Answer:

B. Quadratic, degree 2

Step-by-step explanation:

ALl you have to see is the degree. The degree is the largest exponent of the expression. The largest exponent here is 2 and since there is only one answer with a degree of two, the answer is b.

Answer:

B

Step-by-step explanation:

the largest exponent is 2 i.e the degree is 2

Need the answer right now please help meeeeeeee

Answers

answer

2.5

Step-by-step explanation:

that is what I got so

what is 57/100- 3/10

Answers

Answer:

27/100

Step-by-step explanation:

make 3/10 into an equivalent fraction with a denominator of 100

therefore, multiply both 3 and 10 by 10 to get:  30/100

57/100 - 30/100 = 27/100

Answer:27/100 Step-by-step explanation:57/100 - 3/10=> 57/100 - 30/100=> 27/100Therefore, 27/100 is your answer.Conclusion:

Hoped this helped

[tex]BrainiacUser1357[/tex]

if 240 slices of cake are shared into the same ration 3:5 among the boys and girls how many slices will each students recieve

Answers

7 slices each your welcome r
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