Please help!!!!!!!!!!!!!!!!!!!!!

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.

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Answer:

2

Step-by-step explanation:

Answer:

0.66666666666

Step-by-step explanation:

this is a real answer

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:

−10x4+17x2y−6y2-10x4+17x2y-6y2

or the second option

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:20 percent

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

Answer:

x equals 10

Step-by-step explanation:

you are moving the 5 from the hundredth value to the tenth, meaning it is becoming a higher number. for this one, just multiply by 10.

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

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.

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Answer:

1245.89

Step-by-step explanation:

fthgxdtyujbcxfdrtyuhjnb bcfdtyhjnbcxdftgyhjn cftyghjn vcfghjnbvfghj

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:

-14+21x

Step-by-step explanation:

Distrubute

-7 times 2= -14

-7 times 3x= -21x

Answer:

The answer is -14 + 21x

Step-by-step explanation:

Distribute -7 to 2 and -3x

-7 × 2 = -14

-7 × - 3x = 21x

= -14 + 21x

Answer:

4.5 > -2.7

Step-by-step explanation:

since 4.5 is a whole number, that automatically makes it bigger

Answer:

30x-6-6x-30

30x-30x-6-6

0-12

-12

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:

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.

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]

Answer:

No solution

Step-by-step explanation:

Answer:

x=3

Step-by-step explanation:

-5(-6-3x)+8=83

Distribute the -5 to both terms in the parentheses by multiplication, multiply the -5 by the -6 and the -3x.

30+15x+8=83

Add like terms, add the 30 and the 8.

38+15x=83

Subtract 38 from both sides to isolate the x on the left side.

15x=45

Divide by 15 on both sides to solve for x.

x=3

Answer:

maybe Add to eliminate y because signs are different

Answer:

c) y=2/3x+3

Step-by-step explanation:

im pretty sure this is right :)

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:

The Base is 150 and the Exponent is 4

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