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Katena32 [7]
3 years ago
9

Find 250% of 800How did you work the problem out?!!

Mathematics
2 answers:
baherus [9]3 years ago
4 0
Find 100% which is 800

100% (800) X2= 1600

Find 50% of 800 which is 400

1600+400=2000

OR

250%=2.5 in decimals

800X2.5=2000
zaharov [31]3 years ago
3 0
250% is 2.5 multiply 800 by 2.5 and you should get 2000
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An 18-meter-tall cylindrical tank with a 4-meter radius holds water and is half full. Find the work (in mega-joules) needed to p
Sliva [168]

Answer:

W = mgh

W = 226290 x 9.8 x 9

W = 19958778Joules

W= 19.958778MegaJoules

Step-by-step explanation:

Work to full the tank is

W = mgh.

m is the mass of the water.

But density = mass/volume, where volume is the volume of the complete the remaining half full of water to fill the cylindrical tank.

mass = density x volume.

Volume of cylinder = πr2h

Volume to fill the cylinder = (πr2h)/2.(half of total volume)

Volume = (22x4x4x9)/(7x2). Height used is 18/2 = 9m

Volume = 226.29m3.

Mass = density x volume= 1000 x 226.29 = 226290kg

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W = mgh

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W = 19958778Joule = 19.958778MegaJoules

7 0
2 years ago
If someone can help me out :D!
Nataliya [291]
Hello

Answer:

28.378

Explanation:

8 0
2 years ago
Read 2 more answers
consuela's living room is a rectangle with an area of 360 square feet. the width of the living room is 5/8 its length. what is t
Aleks [24]
Area of Consuela's rectangular living room = 360 square feet
Let us assume the the length of the living room = x
Then
width of the living room = (5/8) * x
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Then
Area of the rectangle = Length * Width
360 = x * (5x/8)
360 = 5x^2/8
2880 = 5x^2
x^2 = 2880/5
x^2 = 576
x^2 = (24)^2 inches
x = 24
Then
The length of the rectangle is = 24 inches
And 
The Width of the rectangle is = 24 * (5/8) inches
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3 0
3 years ago
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dangina [55]

Answer:

Coefficient

Step-by-step explanation:

If it is 10a^3 (10 times the variable "a" cubed), then 10 is the coefficient.

3 0
2 years ago
A piggy bank contains 3 pennies, 4 nickels, 4 dimes and 9 quarters. Two coins
xeze [42]

Answer:

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Explain Step By Step Answer

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