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3 years ago

Solve V=ab+at, for a

Mathematics

2 answers:

Liula [17]3 years ago

7 0

V=ab+at

V=a(b+t)

a=V/(b+t)

statuscvo [17]3 years ago

4 0

V=ab+at -- factorise the right
V=a(b+t) -- divide by (b+t)
V/(b+t)=a

a=V/(b+t)

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Dean Halverson recently read that full-time college students study 20 hours each week. She decides to do a study at her universi

romanna [79]

Answer: The p-value is 0.154.

Step-by-step explanation:

Since we have given that

We claim that

Null hypothesis :

$H_0:\mu=20$

Alternate hypothesis :

$H_1:\mu$

Population mean = 20 hours

Sample mean = 18.5 hours

Sample standard deviation = 4.3 hours

Sample size n = 35

So, test statistic would be

$z=\dfrac{\bar{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\z=\dfrac{18.5-20}{\dfrac{4.3}{\sqrt{35}}}\\\\z=\dfrac{-1.5}{0.726}\\\\z=-2.066$

So, the p value would be 0.154.

Hence, the p-value is 0.154.

4 0

3 years ago

Find the quotient. Do not round. 55.328 ÷ 3.8 =<br> PLZ HELP NOW!!

Igoryamba

55.328 / 3.8 = 14.56

6 0

4 years ago

Captain Ishaan has a ship, the H.M.S. Khan. The ship is two furlongs from the dread pirate Luis and his merciless

fredd [130]

Answer:

Khan Academy's answer is 4/35.

Step-by-step explanation:

4/5 * 1/7 = 4/35

4 0

3 years ago

In a nursery class of 18 pupils, the average is

melamori03 [73]

Answer:

The sum of the age of pupils is 81

Step-by-step explanation:

Let sum of age of 18pupils = x

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Average = total/no. of pupil

4.5 = x/18

x = 81

8 0

3 years ago

Read 2 more answers

Jeff is baking a cake. The recipe says that he has to mix 32 grams of vanilla powder to the flour. Jeff knows that 1 cup of that

Sedaia [141]

Answer:

Jeff went over by 53.33 grams or $53\frac{1}{3}$ grams.

Step-by-step explanation:

Jeff is baking a cake. The recipe says that he has to mix 32 grams of vanilla powder to the flour.

Jeff knows that 1 cup of that particular vanilla powder has a mass of 128 grams.

He added $\frac{2}{3}$ of a cup of vanilla powder to the flour.

So, he added a mass of $\frac{2}{3} \times128= 85.33$ grams of vanilla.

As the recipe says, it needs 32 grams of vanilla so Jeff went over by $85.33-32=53.33$ grams.

Jeff went over by 53.33 grams or $53\frac{1}{3}$ grams.

8 0

3 years ago