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schepotkina [342]
3 years ago
14

Please help with my algebra homework and explain if you can : v= pi/3 rsquared h

Mathematics
1 answer:
Tanzania [10]3 years ago
6 0

To isolate the variable means to have it by itself on one side of the equation, where the variable equals an expression.

To isolate h, we will need to remove the variables and other terms "connected" to the h variable:

V = \dfrac{\pi}{3}r^2h

\dfrac{V}{r^2} = \dfrac{\pi}{3}h

\boxed{\dfrac{3V}{r^2\pi} = h}

By dividing terms "connected" to our h variable, we have isolated it one side of the equation.

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Amy and Ben share £21 between them in the ratio 5 : 2. How much does Amy get?
Alika [10]

Answer:

✑ \underline{ \underline{ \sf{First ,\: Let's \: learn \: about \: the \: ratio}}} :

Let us consider , there are 30 boys and 40 girls in a school. So, the ratio of number of boys to number of girls = \sf{ \frac{30}{40} =  \frac{3}{4}   = 3:4} and read as 3 is to 4. We can say , the ratio compares two of more quantities of same unit. Until two quantities have same units , it is meaningless to compare by ratio. So, to find the ratio of two quantities , it is necessary to express them in same unit or of same kind. Since , they are in division form. So ,ratio is unit less quantity. Thus , the ratio is a comparison of two quantities of the same kind in division which doesn't have any units. For example : \sf{ \frac{a}{b}} is a ratio and is read as ' a is to b ' in which ' a : is antecedent and ' b ' is called consequent.

✎ \underline{ \underline{ \sf{Now \: let's \: solve : }}}

☪ \underline{ \sf{Solution}} :

£ 21 is to be divided between Amy and Ben in the ratio 5 : 2. So, let Amy get £ 5x and Ben get £ 2x.

Then , According to the question , \text{5x +2x = 21}

Solve for x :

⇝ \sf{7x = 21}

⇝ \sf{ \frac{7x}{7}  =  \frac{21}{7} }

⇝ \sf{x = 3}

The value of x is 3. Now , substitute the value of x in 5x :

Amy received £ 5x = 5 × 3 = £ 15 .

☥ \boxed{ \boxed{ \tt{Our \: final \: answer \: is \bold{£ \: 15}}}}

Hope I helped ! ツ

Have a wonderful day / night ♡

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6 0
2 years ago
Ryan had 4 pieces of pipe that were each 1 1/3 yd long. He also had a piece of wood that was 4 1/6 yd long. Ryan needed to cut t
Andru [333]
4 pieces  of pipe,

4/3 yd long

25/6 yd long

5 pieces same length.

(25/6)/5 = 5/6 yd  is the length of each piece of woods.



3 0
3 years ago
Read 2 more answers
1.Kori spent $46.20 on 12 gallons of gasoline. What was the price per gallon?
spin [16.1K]

1: B $3.85

2: C The rabbit; 14 miles per hour

3: C 2 1/2 miles

1. Reason: To find the price per gallon, all you need to do is divide 46.20 by 12 to get 3.85

2. Reason: To find which animal is faster all you have to do is subtract the greater number, which is the rabbit that travels 35 miles per hour from the smaller number which is the fox that travels 21 miles.

Subtract: 35-21= 14. So the rabbit is faster by 14 miles.

3. Reason: If Randy walks 1/2 mile in every 1/5 hour, to find the much he will walk in a hour you could count up:

1/2 mile = 1/5 hour

1 mile = 2/5 hour

1 1/2 mile = 3/5 hour

2 mile = 4/5 hour

2 1/2 mile = 1 hour

So, Randy will travel 2 1/2 miles in a hour.

8 0
3 years ago
Which of the following tables represents a proportional relationship?
scoray [572]
I think it is option C, i am not sure tho.
7 0
2 years ago
Read 2 more answers
I need all the steps
BARSIC [14]

Answer:

ig

Step-by-step explanation:

(9-\sqrt{-8} )- (5 + \sqrt{-32}  ) \\(9-5) + (-\sqrt{-8}- \sqrt{-32}  )\\4 - \sqrt{-8} -\sqrt{-32}  \\4-2i\sqrt{2} -4i\sqrt{2} \\4-6i\sqrt{2}

5 0
3 years ago
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