English, 07.10.2019 10:00 liaholmes8

You have a large number of friends coming over and they all get thirsty. your first friend asks for 1/2 a cup of water. your second friend asks for 1/4 a cup of water. your third friend asks for 1/8 a cup of water, etc.

how many cups of water do you need to serve your friends?

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First things first, convert all the fractions to ones with the same denominator. 2,4, and 8 can all be divided (or go into) 8 evenly. Make 8 the common denominator. To get the new numerator, multiply the same number as you did to get the new denominator.
1/2-->4/8 (4 multiplied by 2, which is the original denominator, gave you 8 as the new denominator. Now, multiply 4 times 1, which is the original numerator to get the new numerator of 4.)
1/4-->2/8 (2 multiplied by 4, which is the original denominator, gave you 8 as the new denominator. Now, multiply 2 times 1, which is the original numerator to get the new numerator of 2.)
1/8-->1/8 (Since 8 is already the denominator, no changes need to be made.)
Now that you have the common denominators, add the numerators. When you have common denominators, you are allowed to add or subtract the numerators as is.
4/8 + 2/8 + 1/8 = 7/8. (4+2+1=7)
You need 7/8 cups of water to serve your friends.

Answer from: superstarsara5ouh83x

The answer is not exactly known but it is less than 1 cup of water.

Answer from: Quest

love

explanation:

Answer from: Quest

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm. the wire diameter is d = 0.9 mm. the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

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write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2) in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

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