[tex]I need help can someone help? I’m really stuck and it’s so really soon! I need to show my work[/tex]

Answer:

a) The jumper opens the parachute in 7.5 seconds.

b) The jumper opens the parachute in approximately 7.706 seconds.

c) There are two possible choices for the function:

Case a): [tex]Dom\{h(t)\} = [0\,s,7.5\,s][/tex], [tex]Ran\{h(t)\}=[1000\,ft,1900\,ft][/tex]

Case b): [tex]Dom\{h(t)\} = [0\,s,7.706\,s][/tex], [tex]Ran\{h(t)\}=[950\,ft,1900\,ft][/tex]

Step-by-step explanation:

Note: The equation presented in statement is incorrect. The correct formula for free fall is:

[tex]h(t)=-16\cdot t^{2}+1900[/tex] (1)

Where:

[tex]t[/tex] - Time, measured in seconds.

[tex]h[/tex] - Height above the ground, measured in feet.

a) If we know that [tex]h(t) = 1000\,ft[/tex], then the final instant of the free fall stage is:

[tex]-16\cdot t^{2}+1900 = 1000[/tex]

[tex]16\cdot t^{2} = 900[/tex]

[tex]t = 7.5\,s[/tex]

The jumper opens the parachute in 7.5 seconds.

b) How long is the jumper in free fall if the parachute opens at 950 ​ft?

If we know that [tex]h(t) = 950\,ft[/tex], then the final instant of the free fall stage is:

[tex]-16\cdot t^{2}+1900 = 950[/tex]

[tex]16\cdot t^{2} = 950[/tex]

[tex]t \approx 7.706\,s[/tex]

The jumper opens the parachute in approximately 7.706 seconds.

c) There are two possible choices for the function:

Case a): [tex]Dom\{h(t)\} = [0\,s,7.5\,s][/tex], [tex]Ran\{h(t)\}=[1000\,ft,1900\,ft][/tex]

Case b): [tex]Dom\{h(t)\} = [0\,s,7.706\,s][/tex], [tex]Ran\{h(t)\}=[950\,ft,1900\,ft][/tex]

Answer:

B

Step-by-step explanation:

Because you have to separate the equation. So you get [tex]\frac{2x-4}{3}[/tex]>[tex]\frac{1}{5}[/tex] And [tex]\frac{2x-4}{3}[/tex]<6

Then you have to solve for x so you get x>[tex]\frac{23}{10}[/tex] and x>11

Then you find the intersection so the answer is B

Answer:

y=−3/2x+6

Step-by-step explanation:

perpendicular, so theres a lot of switching things

Answer:

y=2x+4

Step-by-step explanation:

Answer:

$80. Which means she spent $64 with the sale, but the original price is $80.

Step-by-step explanation:

16 is 20% of 80

Answer

The answer is $120.00

Options

What was the price of the bicycle when Mazie bought it?

$140.00

$149.80

$130.00

$120.00

Explanation

Multiply the price of the bike by the discount percentage

150 * 0.20 = 30

Subtract the number you just found from the original price

150 - 30 = 120

There is your answer

You could take a shortcut by doing the following

1 - 0.20 = 0.80

Then multiply the original value by the new percentage

150 * 0.80 = 120

Personally I like the first method because it makes more sense.

Answer:

A haircut costs $31

Coloring hair costs $93

Step-by-step explanation:

h = haircut

c = color

First equation: 1h + 2c = 217

Second equation: 2h + 1c = 155

Solve using elimination:

First, multiply both the equations so that they cancel the h's out:

First equation:

-1(2h + 1c = 155)

-2h - 1c = -155

Second equation:

2(1h + 2c = 217)

2h + 4c = 434

Then, put the equations together, and solve:

2h + 4c = 434

-2h - 1c = -155

3c = 279

c = 93

Find h:

2h + 1c = 155

2h + 1(93) = 155

2h + 93 = 155

2h = 62

h = 31

Hope this helped!

Answer:

x squared = 8x

Step-by-step explanation:

Move

8

x

to the left side of the equation by subtracting it from both sides.

x

2

−

8

x

=

0

Factor

x

out of

x

2

−

8

x

.

Tap for more steps...

x

(

x

−

8

)

=

0

If any individual factor on the left side of the equation is equal to

0

, the entire expression will be equal to

0

.

x

=

0

x

−

8

=

0

Set the first factor equal to

0

.

x

=

0

Set the next factor equal to

0

and solve.

Tap for more steps...

x

=

8

The final solution is all the values that make

x

(

x

−

8

)

=

0

true.

x

=

0

,

8

Answer:

k divided by three plus sixteen

Answer:

I'm so sorry all i can do is encourage you.

Step-by-step explanation:

I hope you get the right answer and have a nice day!

The standard form of the expression is x⁵+ 7x⁴ + 8x² - 9x - 5.

Polynomial is an expression consisting of indeterminates and coefficients, that involves only the operations of addition, subtraction, multiplication, and positive-integer powers of variables

To write the given expression in standard form, we need to arrange the terms in descending order of their exponents (from highest to lowest).

So we start by rearranging the given expression as:

x⁵+ 7x⁴ + 8x² - 9x - 5

Now the terms are ordered from highest to lowest exponent.

Now we need to rewrite the expression by collecting like terms and arranging the coefficients in descending order of exponent.

The standard form of the expression is:

x⁵+ 7x⁴ + 8x² - 9x - 5

Hence, the standard form of the expression is x⁵+ 7x⁴ + 8x² - 9x - 5.

To learn more on Polynomials click:

https://brainly.com/question/11536910

#SPJ3

i think its C

:) :) :) :) :) :) :)

Answer:

5x+120

Step-by-step explanation:

first you add the 2x x and x and x that would get you 5x and then add the 20 and 10 and 80 that would get you 120

Answer: C. 5(6) + 0.65y

Step-by-step explanation:

Process of elimination.

65% of y = 0.65y

A has 65y, completely incorrect.

B has 6y, also completely incorrect.

C has 0.65y, correct.

D has 1.65y, also completely incorrect.  

False:

A rotation is the action of rotating around an axis or center.

A slide means to move along a smooth surface while maintaining continuous contact with it.

Answer:

What is the following expresion?

Step-by-step explanation:

Answer:

C. 8 - ab

Step-by-step explanation:

all the other represents -8 multiply by a by b.

Answer:

x2+2=Y

Step-by-step explanation:

Answer:

x=3

Step-by-step explanation:

Divide both sides by 8.

Answer:

3

Step-by-step explanation:

8x3=24..............

Answer

d i think

Step-by-step explanation:

The slope would be 1.33

Answer:

The principal would like to assemble a committee

of 8 students from the 15-member student council.

How many different committees can be chosen?

1) 120 2) 6,435 3)

Step-by-step explanation:

The principal would like to assemble a committee

of 8 students from the 15-member student council.

How many different committees can be chosen?

1) 120 2) 6,435 3)

Answer:

Step-by-step explanation:

Remark

This problem only wants to know how many ways to select 7 starting from a base of 11.

Nothing else matters. Not grades, not gender, not age, not qualifications, not order -- nothing. Just 7 out of 11.

That problem is a combination and is written as

(11)/(7)

The formula used is

11! / (7! (11 - 7)! )

11! /( 7! 4!) = 11 * 10 * 9 * 8 * 7! / (7! * 4!) The 7! s cancel out

11 * 10 * 9 * 8 / 4 * 3 * 2 * 1 = 330

Answer:

0.26, 0.62, 2.06, 2.6, 6.2

9514 1404 393

Answer:

  d)  a(b + c) = ab + ac

Step-by-step explanation:

The distributive property explains how multiplication distributes over addition. It can be expressed by the equation ...

  a(b + c) = ab + ac

Answer:

7.1

Step-by-step explanation:

Answer:

13.5

Step-by-step explanation:

150% × 9 =

(150 ÷ 100) × 9 =

(150 × 9) ÷ 100 =

1,350 ÷ 100 =

13.5

My proof :

If 150% × 9 = 13.5 =>

Divide 13.5 by 9... ... And see if we get as a result: 150%.

Answer:

y=-4x+2

hope this helped

Answer:

he walked 11.0km the nearest tenth would be 10.0km

Step-by-step explanation:

hope this helps