Which proportion models this problem?

1 answer:

7 0

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The best and most correct answer among the choices provided by the question is C. x over 520 = 5 over 13.

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A potato gun is a device made out of plastic pipe that launches a potato using compressed air. They can be great fun, and even e

snow_tiger [21]

Answer:

The potato is 224 feet in the air after 2.75 second on the way up and after 5 seconds on the way back down.

Step-by-step explanation:

Given : A potato launched by a particular potato gun has a height described by $h ( t ) =-16 t^2+124 t+4$ .

To find : When is the potato 224 feet in the air?

Solution :

When the potato is 224 feet in the air i.e. $h(t)=224$

Substitute in the equation $h ( t ) =-16 t^2+124 t+4$ ,

$224=-16 t^2+124 t+4$

$16t^2-124 t+220=0$

$4t^2-31t+55=0$

Applying quadratic formula, $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

Here, a=4, b=-31 and c=55

$t=\frac{-(-31)\pm\sqrt{(-31)^2-4(4)(55)}}{2(4)}$

$t=\frac{31\pm\sqrt{81}}{8}$

$t=\frac{31\pm9}{8}$

$t=\frac{31+9}{8},\frac{31-9}{8}$

$t=5,2.75$

The potato is 224 feet in the air after 2.75 second on the way up and after 5 seconds on the way back down.

5 0

2 years ago

Find f(-3) PLEASE HELP

Artemon [7]

Answer:

Step-by-step explanation:

When the point on the x-axis is on -3, the point on the y-axis is 2. Therefore, f(-3) is equal to 2.

If this helps please mark as brainliest

6 0

2 years ago

Read 2 more answers

Your family goes to a Southern-style restaurant for dinner. There are 5 people in your

AURORKA [14]

$x-number\ of\ people\ who\ ordered\ chicken\\5-x-number\ of\ people\ who\ ordered\ steak\\\\13x+18(5-x)=80\\13x+90-18x=80\\13x-18x=80-90\\-5x=-10\ \ \ \ \ |:-5\\x=2\\\\5-2=3\\\\a)\ 3\ of\ them\ ordered\ steak\\b)\ 2\ of\ yhem\ ordered\ chicken$