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4 years ago

An elephant eats about 2,500 pounds of food in 10 days. About how much food does an elephant eat in 1,000 days.

Mathematics

1 answer:

swat324 years ago

5 0

You want to find out how much food the elepahnt eats in one day. So divide 2500 by 10.

2500/10= 250 pounds.

Then multiple the answer by 1000 days.

250 x 1000= 250,000 punds eaten in 1000 days.

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Round 35295 to the nearest thousand

Alex_Xolod [135]

35000, rounding down from five.

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3 years ago

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A hiker starting at point P on a straight road wants to reach a forest cabin that is 2 km from a point Q, 3 km down the road fro

pantera1 [17]

Answer:

2.19 km

Step-by-step explanation:

If x is the distance she walks down the road before turning, then the total time is:

t = x/8 + √((3 − x)² + 2²) / 3

t = x/8 + √(9 − 6x + x² + 4) / 3

24t = 3x + 8√(13 − 6x + x²)

24t = 3x + 8(13 − 6x + x²)^½

Take derivative of both sides with respect to x.

24 dt/dx = 3 + 4(13 − 6x + x²)^-½ (-6 + 2x)

When t is a minimum, dt/dx = 0.

0 = 3 + 4(13 − 6x + x²)^-½ (-6 + 2x)

-3 = 4(13 − 6x + x²)^-½ (-6 + 2x)

3 / (6 − 2x) = 4(13 − 6x + x²)^-½

3 / (24 − 8x) = (13 − 6x + x²)^-½

(24 − 8x) / 3 = (13 − 6x + x²)^½

(24 − 8x)² / 9 = 13 − 6x + x²

576 − 384x + 64x² = 117 − 54x + 9x²

459 − 330x + 55x² = 0

Solve with quadratic formula.

x = [ 330 ± √((-330)² − 4(55)(459)) ] / 2(55)

x = (330 ± √7920) / 110

x = 2.19 or 3.81

Since 0 < x < 3, x = 2.19.

7 0

3 years ago

Mario drew a model to represent one third of the space in his bookcase. how could mario draw a model to represent all the space

Maksim231197 [3]

He could of drew it open

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Why can you use cross products to solve the proportion 18/5 = x/100 for x ?

Tcecarenko [31]

Answer:

Yes, you can use cross products to solve for x in this proportion. Also, x is 360.

Step-by-step explanation:

Yes, you can use cross products to solve for x in that proportion.

Here's how you do it :

$\frac{18}{5} = \frac{x}{100}$

We cross product, getting :

18 * 100 = 5 * x

1800 = 5x

Divide by 5 on both sides to get x by itself.

360 = x

Yes, you can use cross products to solve for x in this proportion. Also, x is 360.

Hope this helps, please mark brainliest if possible. Have a great day.

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3 years ago

The volume of a cube with sides of length s is given by v = s3. find the rate of change of the volume with respect to s when s =

Tpy6a [65]

I think the unit is cm^2

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