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3 years ago

Dion has a collection of 15 model cars he wants to display them in an array how many ways can he arrange the cars

Mathematics

1 answer:

miv72 [106K]3 years ago

8 0

Answer:

IN 3 Ways

Step-by-step explanation:

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727.29 - 248.50 = 478.79

500-478.79 = 21.21

$21.21 is the least amount of money he needs to deposit

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3 years ago

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Lindsay has some yellow and red flowers in a vase. The ratio of yellow to red flowers is 4 : 7. The number of yellow flowers in

Naddik [55]

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3 years ago

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Simplify: √8x^5+ x√18x^3<br>÷x^2√50x

Sergeu [11.5K]

Answer:

10x^2 √2x

Step-by-step explanation:

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2 years ago

What is the slope of the line passing through the point A and B, as shown on the graph below

IRISSAK [1]

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Step-by-step explanation:

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2 years ago

A model rocket is launched with an initial velocity of 200 ft per second. The height h, in feet, of the rocket t seconds after t

Solnce55 [7]

Answer:

2.10 s, 10.40 s.

Step-by-step explanation:

We know that the height of the rocket is given by the function:

$h=-16t^2+200t$

We are asked to find the time for which the height of the rocket will be 350 ft. So, for that moment, we know the height but we don't know the time; however, we know that the equation can help us to find the time, doing h=350:

$350=-16t^2+200t$

The last is a quadratic equation, which can be put in the form $at^2+bt+c=0$ and solved applying the formula:

$t=\frac{-b+-\sqrt{b^2-4ac} }{2a}$

So, let's put the equation on the form $at^2+bt+c=0$ adding $16t^2$ and subtracting $200t$ to each side of the equation; the result is:

$16t^2-200t+350=0$

So, we note that a=16, b=-200, and c=350.

Then,

$t_1=\frac{200-\sqrt{200^2-4*16*350} }{2*16}=2.10$

$t_2=\frac{200+\sqrt{200^2-4*16*350} }{2*16}=10.40$

According to the equation, that are the times for which the height will be 350 ft; that is because the rocket is going to ascend and then to fail again to the ground.

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3 years ago