Rafael drops a ball from the third-story window. This equation represents the approximate height, h, in meters, of the ball above the ground after it falls for t seconds.

h = -5t² + 45

When is the ball at ground level?​

Answers

Answer 1

Answer:

3 seconds is when it will be at ground level.

Step-by-step explanation:

I'll explain it tmr, just reply if you want me to explain.


Related Questions

I’ll mark brainliest
Select the correct answer.
Which function is an odd function?
A. f(t) = cos(-21)
B. f(x)=csc(-921)
c f(t) = sec (533)
D. f(1) = cos(12)

Answers

Answer:

b

Step-by-step explanation:

What is the area of a semicircle that has a radius of 20 feet?

Answers

Answer:

[tex]200\pi[/tex] or 628.3185

Step-by-step explanation:

Area of a semicircle is equal to [tex]\frac{\pi r^{2}}{2}[/tex]. So, when the radius is 20, the area of the semicircle will be [tex]\frac{\pi (20)^{2} }{2} =\frac{400\pi }{2} =200\pi =628.3185[/tex].

Will Gove brainliest:)

Does this table represent a linear or nonlinear function? Explain.

Answers

Non linear because the y values are consistent in how they increase

-2x+2>3x-8

50 points

Answers

Given:

The inequality is

[tex]-2x+2>3x-8[/tex]

To find:

The solution of the given inequality.

Solution:

We have,

[tex]-2x+2>3x-8[/tex]

Isolate the variables terms on the left side.

[tex]-2x-3x>-2-8[/tex]

[tex]-5x>-10[/tex]

Divide both sides by -5 and change the inequality sign as we divide the equality by a negative value.

[tex]\dfrac{-5x}{-5}<\dfrac{-10}{-5}[/tex]

[tex]x<2[/tex]

Therefore, the correct option is D.

How many square feet of outdoor campot will we need for this hole?​

Answers

Answer:

10 ft. should be the answer if I did it correctly

Step-by-step explanation:

What is 70 + 4 rounded to the nearest ten?

Answers

Answer:

Step-by-step explanation:

We round the number up to the nearest ten if the last digit in the number is 5, 6, 7, 8, or 9.

We round the number down to the nearest ten if the last digit in the number is 1, 2, 3, or 4. If the last digit is 0, then we do not have to do any rounding, because it is already to the ten.

Answer:

70

Step-by-step explanation:

70+4= 74

Find the number in the spot (tens place/7) go next door see what you go (4) Five or more you raise the score, four or less you let it rest.

4 is four or less so you let it rest by replacing it with a zero.

Answer= 70

A teacher bought pencils for $14.99, but she knows the store bought them for $8.50. What is the percent markup to the nearest whole?

Answers

Answer:

20

Step-by-step explanation:

23 would be the answer but its rounding to the nearest whole

Somebody pls!! “Write the equation of the line in fully simplified slope-
intercept form.”

Answers

Answer:

y = 3/5x + 5

Step-by-step explanation:

Slope-intercept form is y = mx + b where m is the slope (rise / run of the line) and b is y-intercept (y value of where the line intersects with the y-axis.

The line is rising up 3 and run to the right 5 and so it's slope is 3/5. The line intersects with the y-axis at a y value of 5 and so it's y-intercept is 5.

Therefore, your answer in slope-intercept form is y = 3/5x + 5.

2. Use the figure at the right. In the figure, line m is parallel to line n. Level (3-4)
If m∠4 = 131°, find each given angle measure. Justify your answer.

a. m∠8 =


b. m∠5


c. m∠2


d. m∠1


e. m∠6


f. m∠7

Answers

Answer/Step-by-step explanation:

Given:

m<4 = 131°

a. m<8 = 180 - m<4 (linear pair)

m<8 = 180 - 131 (substitution)

m<8 = 49°

b. m<5 = m<4 (alternate exterior angle are congruent)

m<5 = 131° (substitution)

c. m<2 = m<5 (vertical angles are congruent)

m<2 = 131° (substitution)

d. m<1 = m<8 (vertical angles are congruent)

m<1 = 49° (substitution)

e. m<6 = m<1 (vertical angles are congruent)

m<6 = 49° (substitution)

f. m<7 = m<4 (vertical angles are congruent)

m<7 = 131° (substitution)

I need help ASAP PLEASEEEEEEEE

Answers

Answer:

g has an average rate of change of zero at the intervals [-5,4] and [-2,2]

Step-by-step explanation:

When we talk of the average rate of change, we mean the change in y values divided by the change in x values

Once the change in y-values is zero, then over that interval, the average rate of change is zero

at the point t =- 5, g(t) = 6; at the point t = 4, g(t) = 6

As we can see here, within the interval [-5,4]; the average rate of change is 0

This same pattern is repetitive at points or ranges where we have same values for g(t)

such as;

[-2,2]

a coach ordered 6 soccer goals for $678. how much did each goal cost

Answers

Answer:

$113

Step-by-step explanation:

$678 / 6 =

$113 each

Hope that helps!

Could someone please help me with this question due in 3 minutes (ASAP)

Answers

Answer:

Area of a rectangulor pentagon =(1/2)(apothem)(perimeter)

apothem=6.5cm

perimeter=6.5

Step-by-step explanation:

If the radius of Brenda's bicycle wheel is 13 inches, approximately how many inches are there in the circumference of the wheel?

Answers

Answer:

There are approximately 82 inches

Step-by-step explanation:

Here, we want to calculate the circumference of the wheel

To do this, we are going to use the formula for the circumference of a circle

C = 2 * pi * r

C = 2 * pi * 13

= 26 * pi

C = 81.7 inches which is approximately 82 inches

The length of two sides of a right triangle are leg: 9 m and hypotenuse: 15 m. Find the length of the third side.

Answers

Answer:

Length of Third Side = 12 m

Step-by-step explanation:

You can use the Pythagorean Theorem to solve this: a² + b² = c² or c² - b² = a² in which a and b are legs, and c is the hypotenuse. We use the second equation to solve this: 15² - 9² = a² or 225 - 81 = a². This simplifies to 144 = a². To find a specifically, find the square root of 144, 12.

Hope it helps!

Find the point where the lines intersect: y = 3x and y = x + 16
A: (8,24)
B: (4,12)
C: (4,20)
D: (0,0)

Answers

The answer is A, using substitution you can change it to 3x = x+16 2x=16 x=8 then plug the x into the equation y=3(8) y=24 (8,24)

Please answer quick in test!

Answers

Answer:

The first one

Step-by-step explanation:

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1. Fred bought 7 new baseball trading cards to
add to his collection. The next
day his dog ate half of his collection. There are
now only 38 cards left.
How many cards did Fred start with ?

Answers

Answer:He has 74 baseball cards

Step-by-step explanation:

He has 38 baseball cards left, and since his dog ate half of it he must have had double the amount of cards. So 38 + 38 . This equals to 74.

Answer:3

Step-by-step explanation:

Find the length of the arc

Answers

Answer:

23.6 or 1 4 × π × 8 = 2 π  if its not right let me know

Step-by-step explanation:

What is the slope of the line?

A. 15

B. 30

C. 18

D. 25

Answers

Answer:

15

Step-by-step explanation:

15 is the difference between 15 and 30 where the 2 dots are at

What is this please anyone

Answers

The answer is 1.4 x 10^3 Or 1400
Rewrite the equation as
(2x7) x (10^6 x 10^4) then calculate from there to get your answer

Find the volume. Round your answer to the nearest tenth and show your work

Answers

V= 1/3 x π x radius squared x height

V= 1/3 x π x 2 squared x 9

V= 37.699

A bag contains colored skittles.

• 6 skittles are red
•12 skittles are green
•6 skittles are blue


A skittle will be randomly selected from the bag. What is the probability in decimal
form that the skittle selected will be green?

Answers

50%


Explanation: There are 24 skittles in total, 12 of then at green. 12 is half of 24, so, it would be 50%

Will give brainliest plz help me and explain how to do it

Answers

Answer:

exact form -108/5, decimal form -21.6, and mixed number form -21 and 3/4

Write the decimal as a percent.

20= .......?%

Answers

Answer:

20%

Step-by-step explanation:

find the solution of given expression

[tex] \sqrt{64\times 9} [/tex]

Answers

Answer:

[tex]\sqrt{64\cdot \:9}[/tex]

[tex]=\sqrt{576}[/tex]

[tex]=\sqrt{24^2}[/tex]

[tex]=24[/tex]

!!20 Points and brainliest if you answer it!!
A group of students were surveyed regarding their enjoyment of country and Jazz music. 8 students enjoyed both types of music, glving a total of 32 students who enjoyed country music, and 14 who enjoyed Jazz. How many total students were questioned in this survey?

A. 54
B. 38
C. 26
D. 46​

Answers

Answer:

46

Step-by-step explanation:

Answer:

D is correct

Step-by-step explanation:

question in the picture

Answers

c= 50+75t

it is less expensive to purchase the $750 software

HELP HELP PLS
What was the outcome of the Spanish-American War?
A: The united states gained Cuba and Bahamas.
B: The united states gained the Philippines, Puerto Rico, and Guam
C: The united states gained Alaska and Hawaii
D: The united states gained Panama and Columbia

Answers

A I think if not for sure b

April, x, slept 9 hours; Evelyn slept 2/3
less than that.
Evelyn slept _______________ hours. Write the equation as both a decimal and fraction.

Answers

Answer:

she slept for 3 hours

Step-by-step explanation:

its actually simple so we know that April slept for 9 hours bug Evelyn only slept 2/3 of 9 hours and if you add 1/3 and 2/3 you get 3/3 which equals a whole so all you have to do is devide 9 into 3 and you get 3 parts with 3 now you add 3 and 3 together and that equals 6 and that was two parts you added which is equaled to 2/3 so all you have to do now is subtract 9-6 and you leave with three which is 1/3 so we come to the final answer she slept for three hours

sorry for such a long explanation

Can you prove the figure is a parallelogram based on the given information? Explain.​

Answers

Answer:

yes it is a parallelogram

Step-by-step explanation:

it is a parallelogram as opposite sides are equal and parallel

Answer:

Step-by-step explanation:

From the given figure, we know that opposite sides are parallel

If two pair of opposite sides are parallel, then it is a parallelogram.

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ALGEBRAIC EXPRESSION:1.Subtract q from p2.Multiply p by q3.Divide 20 by p4.8 times p5.The sum of p and q6.Add 15 to p7.Subtract 25 from q(pls help me am just new to this lesson) A car weighs 11000 N on Earth. What is its mass?A) 300 kgB) 1122 kgC) 0 kgD) 107,800 kg 1. The institution of slavery was formally abolished in the United States by thea. Compromise of 1850b. Emancipation Proclamation of 1863C. creation of the Freedmen's Bureau in 1865d. ratification of the 13th amendment in 1865 A day at the spa costs $125. You leave a 20% tip. How much tip did you leave? A rectangular prism has a length of 5 centimeters, a height of 6 centimeters, and a width of 9 centimeters. What is its volume, in cubic centimeters?Please help :( Pls help me with the graph , the choices are below How are fossil fuels formed from geologic processes? . In what two Kansas cowtowns did Wyatt Earp serve as a lawman a basketball player made 62 out of 100 attempted free throws. what percent of free throws was made? what is 6 divided by 1,932 4. Find the following function values. (3)/ (3) ( (2)) f(f'(-4)) g(x+2) HELP!!!!! See attached! Solve the inequality A car traveling at 72 kilometers per hour. Find the cars speed in one meter per second? The physical process that leads to a reduction in the amount of arable land and crop output is __________. pls help will give brainliest TRUE OR FALSE 2. Somnambulism is a psychologically induced altered state of consciousness.3. Unconscious information processing occurs simultaneously on many paralleltracks.4. Your subconscious mind is just the "tip of the iceberg" according to psychologistslike Sigmund Freud. HELP PLSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS Will give brainiest to whoever answers correctly and I will make this question worth a lot of points what are the two main types of chemical bonds?