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Natali5045456 [20]

3 years ago

14

A parachutist is 800 feet above the ground when she opens her parachute. She then falls at a constant rate of 5 feet per second.

Select the equation that represents this situation.
h = -800t + 5

y = -5x + 800

h = 5t - 800

y = 800x + 5

1 answer:

jeyben [28]3 years ago

4 0

The answer is y=-5x+800, x being the # of seconds she's been in the air, and y being how far above the ground she is.

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you spend at most $10 at the mall you want to buy a book that costs $6.75 and a cold drink how much can you spend on the drink?

Aneli [31]

You can make an equation: 6.75 + x = 10
6.75 is the amount you spend on the book, x is the amount you can spend on the drink, and 10 is the total cost.

Solve for x to find how much you can spend on the drink.
6.75 + x = 10
Subtract 6.75 from both sides to isolate x.

x = 3.25

You can spend $3.25 on the drink.

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3 years ago

The perimeter of a rectangle is 15x+17y. if the length is 7/2x+7y, then find the width of the rectangle

Alexxandr [17]

Answer:

A

Step-by-step explanation:

Length : $\frac{7x}{2} + 7y$

Perimeter: $15x + 17y$

Perimeter = 2(Length + Width)

15x + 17y = 2( $\frac{7x}{2} + 7y$ + Width)

15x + 17y = 7x + 14y + 2(Width)

15x + 17y -7x -14y = 2(Width)

8x + 3y = 2(Width)

Width = $\frac{8x + 3y}{2}$

Width = 4x + 3y/2

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3 years ago

If 0.142857142857......is expressed in the form m/n, then what is the value<br>of (2m + n)?

frosja888 [35]

Answer:

The value will be: 1,285,713

Step-by-step explanation:

We have the number:

N = 0.142857...

Such that we have 6 decimals after the decimal point that repeat infinitely.

Then let's start by multiplying our number by 1,000,000 (same number of zeros as decimals after the decimal point)

Then we get:

1,000,000*N = 142,857.142857...

Now let's subtract N from both sides:

1,000,000*N - N = 142,857.142857... - 0.142857...

999,999*N = 142,857

Now let's isolate N

N = 142,857/999,999

Here is our number expressed in the form m/n, where:

m = 142,857

n = 999,999

Then the value of (2*m + n) is:

(2*142,857 + 999,999) = 1,285,713

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Anyone waanna talk on Instagram

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Ok sure and one more thing are you smart at geometry like 100% smart

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