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3 years ago

80,531 rounded to nearest thousand

Mathematics

2 answers:

mario62 [17]3 years ago

5 0

Answer:

81,000

Step-by-step explanation:

Find the number in the thousand place 0 and look one place to the right for the rounding digit 5. Round up if this number is greater than or equal to 5 and round down if it is less than 5. So the answer is 81,000

Vlad [161]3 years ago

4 0

Answer:

81,000

Step-by-step explanation:

go to whatever place it is asking you to round nearest to the if it is 5 or more you round up 4 or less it stays the same.

Saying for this -" 5 or more raise the score, 4 or less let it rest"

^round up^ ^stays the same^

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Answer:

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3 years ago

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2 years ago

Read 2 more answers

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.

4 0

3 years ago

Please help i am very confused

Elena L [17]

Answer:

the mean is the average, so you would add up all the numbers and then divide by the amount of numbers

so the answer would be 67.5

8 0

3 years ago