Hey please help me answer this and explain your answer :)

Will give brainlst.

Answer:

0.72secs

Step-by-step explanation:

Given the height of the ball in air modeled by the equation:

h=−16t²+23t+4

Required

Total time it spent in the air

To get this we need to calculate its time at the maximum height

At the maximum height,

v = dh/dt = 0

-32t + 23 = 0

-32t = -23

t = 23/32

t = 0.72secs

Hence the total time it spend in the air will be 0.72secs

The total time for which the ball is in the air is 0.72 seconds and this can be determined by differentiating the given function.

Given :

A boy throws a ball into the air. The equation [tex]\rm h = -16t^2+23t+4[/tex] models the path of the ball, where h is the height (in feet) of the ball t seconds after it is thrown.

Differentiate the given function of height with respect to 't' in order to determine the value of 't'.

[tex]\rm h = -16t^2+23t+4[/tex]

[tex]\rm \dfrac{dh}{dt}=-32t+23[/tex]

Now, equate the above differential equation to zero.

-32t + 23 = 0

23 = 32t

t = 0.72 seconds

So, the total time for which the ball is in the air is 0.72 seconds.

For more information, refer to the link given below:

https://brainly.com/question/24062595

Answer:

3a = -12

hope it helps...

Answer: Hope this helps, I think I did the right math if not I'm sorry

2/6 x 1/6 = 1/18

Step-by-step explanation:

Answer:

sin 60° = 0.9

Step-by-step explanation:

sin 60° = cos 30°

cos 30° = 0.866025403

0.866025403 to one significant figure

0.866025403 ~ 0.9

~. means approximately.

therefore sin 60° = cos 30°

sin 60° = 0.9

Answer:

No solution

Step-by-step explanation:

Answer:

1 BEAT: Boba Fett

Step-by-step explanation:

This is a fight Mando wins, hands down. ... Boba grew up during the Clone Wars and became a renowned bounty hunter like his father.

Answer:

52x < $211

Step-by-step explanation:

If Roland uses $289 to purchase the laptop from the $500 that was given to him then he would be left with

500 - 289 = $211

With this he can purchase video games. Since each video game costs the same price of $52 then we can use the variable x to represent the number of games he can buy with the following inequality...

52x < $211

Answer: the large fishbowl hold up to 46 gallons of water

Step-by-step explanation:

Answer: the large fishbowl hold up to 46 gallons of water

Answer:

because a right angle's base is on the bottom

Step-by-step explanation:

sub to Pen Paper

Answer:

30x-6-6x-30

30x-30x-6-6

0-12

-12

Answer:

[tex]y = -4\frac{1}{2}[/tex]

Step-by-step explanation:

[tex]16-(3-4y) = 2(y+2)[/tex]

Distribute.

[tex]16 - 3 + 4y = 2y + 4[/tex]

Combine like terms.

[tex]13 + 4y = 2y + 4[/tex]

Subtract [tex]2y[/tex] from both sides.

[tex]13 + 2y = 4[/tex]

Subtract 13 from both sides.

[tex]2y = -9[/tex]

Divide both sides by 2.

[tex]y = -4\frac{1}{2}[/tex]

I hope this helps!

Answer:

Step-by-step explanation:

The equation is:

When y = 16.50, we can find x as:

Answer:

[tex]\boxed {y = 1.5x} \\ 16.5 = 1.5x \\ x = \frac{16.5}{1.5} \\ \boxed {x = 11}[/tex]

Value of x is 11.

9514 1404 393

Answer:

  1/2, 3/10

  1/21, 8/27

Step-by-step explanation:

Fractions are multiplied by multiplying the numerators and expressing that product over the product of the denominators:

 [tex]\dfrac{a}{b}\times\dfrac{c}{d}=\dfrac{ac}{bd}[/tex]

In several cases here, the numerator product has factors in common with the denominator product. Those can be cancelled, reducing the product fraction to lowest terms.

  [tex]\dfrac{3}{4}\times\dfrac{2}{3}=\dfrac{3\cdot2}{4\cdot3}=\dfrac{3\cdot2}{3\cdot2\cdot2}=\boxed{\dfrac{1}{2}}\\\\\dfrac{4}{5}\times\dfrac{3}{8}=\dfrac{4\cdot3}{5\cdot8}=\dfrac{4\cdot3}{4\cdot2\cdot5}=\boxed{\dfrac{3}{10}}\\\\\dfrac{1}{6}\times\dfrac{2}{7}=\dfrac{1\cdot2}{6\cdot7}=\dfrac{2}{2\cdot3\cdot7}=\boxed{\dfrac{1}{21}}\\\\\dfrac{4}{9}\times\dfrac{2}{3}=\dfrac{4\cdot2}{9\cdot3}=\boxed{\dfrac{8}{27}}[/tex]

Answer:

The Base is 150 and the Exponent is 4

Answer:

8 hours and 54 minuter

Step-by-step explanation:

1 hour is equal to 60 minutes

we have 8 hours and 0.9 hours

0.9*60=54 minutes

we have 8 hours and 54 minuter

Answer:

The last one

Step-by-step explanation:

First you need to figure out how many minutes are in 0.1 hours

you can do this by dividing 60 minutes by 10

you get 6

multiply 6 and 9 so that you can find out how many minutes 0.9 hours are

this leaves you with 54 minutes

so your answer is 8 hours and 54 minutes

Answer:

We conclude that:

[tex]h\left(3k-12.4\right)=3hk-12.4h[/tex]

Step-by-step explanation:

Given the expression

[tex]h\left(3k-12.4\right)[/tex]

Expanding the expression

Let us expand the expression

[tex]h\left(3k-12.4\right)[/tex]

Apply the distributive law: a (b - c) = ab - ac

here a = h, b = 3k, c = 12.4

so th expression becomes

[tex]h\left(3k-12.4\right)=h\cdot \:\:3k-h\cdot \:\:12.4[/tex]

                     [tex]=3hk-12.4h[/tex]

Therefore, we conclude that:

[tex]h\left(3k-12.4\right)=3hk-12.4h[/tex]

The students that are in the seventh grade is 60.

A percentage is a value or ratio that may be stated as a fraction of 100. If we need to calculate a percentage of a number, we should divide it's entirety and then multiply it by 100. The percentage therefore refers to a component per hundred. Per 100 is what the word percent means. It is represented by %.

Let the students that are in the seventh grade be x.

Since 12 students in the Environmental Club represent 20% of the students in the seventh grade. This will be:

20% × x = 12

0.2x = 12

Divide

x = 12 / 0.2

x = 60

Therefore, there are 60 students.

Learn more about percentages on

brainly.com/question/24877689

#SPJ1

Answer:

them some expensive pencils

the answer is 4/.12

:)

Answer:

Hence, multiple choice questions are arranged in increasing difficulty (questions 1 and 2 will be the easiest, questions 14 and 15 will be the hardest), but the difficulty level resets for the grid-in section (meaning questions 16 and 17 will again be "easy" and questions 19 and 20 will be very difficult).

What is the question??

Answer:

2

Step-by-step explanation:

Answer:

The Third Childs name was "June"

Step-by-step explanation:

Because  you said the first Childs name was "April" then the second one was "May", therefor you get "June" because It's "January, February, March, April, JUNE- on so on.

Answer:

Jhon

Step-by-step explanation:

tHe NaMe Is MenTiOnEd

Answer:

so i dont have to answer why thank you

Step-by-step explanation:

Answer:

8%

Step-by-step explanation:

Answer:20 percent

Step-by-step explanation:correct me if I’m wrong

Answer:

0.05

Step-by-step explanation:

Let blank be 'x'

1.456=1+0.4+x+0.006

1.456=1.406+x

x=0.05