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4 years ago

What is half of 2 3/4? And how do I find it

Mathematics

2 answers:

Romashka-Z-Leto [24]4 years ago

7 0

To find half of a number, divide it by 2.

2 3/4 ÷ 2

To divide, convert the mixed fraction into an improper fraction.

2 3/4 = 11/4

The problem becomes

11/4 ÷ 2/1

To divide, multiply by the reciprocal of the fraction on the right.

11/4 · 1/2 = 11/8

Answer:

$\frac{11}{8}$ or $1\frac{3}{8}$

drek231 [11]4 years ago

6 0

You have to change it into a improper fraction then you divide it by 1/2 and you should get your answer

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Researchers report that on average freshman who live on campus gain 15 pounds during their first year in college. You survey 10

neonofarm [45]

Answer: 1.460

Step-by-step explanation:

Given : Researchers report that on average freshman who live on campus gain 15 pounds during their first year in college.

Let $\mu$ represents the population mean .

Then, the set of hypothesis will be:-

$H_0: \mu=15$

$H_a:\mu\neq15$

We assume that this is normal distribution.

Sample size : n = 10, which is a small sample (n<30) ,s o we use t-test.

Sample mean : $\overliene{x}=16.2\ lbs$

Standard deviation : $\sigma=2.6$

The test statistic for population mean for small sample is given by :-

$t=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

$t=\dfrac{16.2-15}{\dfrac{2.6}{\sqrt{10}}}=1.45951276623\approx1.460$

Hence , the value of test statistic = 1.460

4 0

3 years ago

How many solutions in 3(6x-2) = 2(9x-3)

Andreyy89

Answer:

Infinite solutions

Step-by-step explanation:

Distribute the numbers

3(6x-2) = 18x - 6

2(9x-3) = 18x - 6

18x - 6 = 18 - 6

Since both sides of the equal sign are the same, that means you can plug any number into x, and it will always be a valid answer.

7 0

3 years ago

If you were a physicist trying to determine the gravitational constant and you were able to measure the force of gravity exerted

Marat540 [252]

F = Gm1m2 / d^2

Gm1m2 = fd^2

G = fd^2 / m1m2

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3 years ago

A lawyer owns 4 pairs of pants, 5 dress shirts and 6 ties. How many days can the lawyer go without wearing the same combination

RideAnS [48]

6 x 4 x 5 = 120 days

Answer is 120 days.

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4 years ago

Read 2 more answers

Two different cars each depreciate to 60% of their respective original values. The first car depreciates at an annual rate of 10

Gnesinka [82]

Answer: The approximate difference in the ages of the two cars is 2 years

Step-by-step explanation:

Now, since the first car (Car A) depreciates annually at a rate of 10% and is currently worth 60% or 40% less than its original value, we can calculate the number of years it took the car to depreciate to just 60% of its original worth:

= Current value/rate of depreciation

= 60%/10%

= 6 years

So, if the car depreciates by 10% every year from the year it was worth 100% of it's original value, it will take 6 years for the car to now worth just 60%

In the same manner, if the second car (Car B) is depreciating at an annual rate of 15% and is likewise currently worth just 60% or 40% less than its original value, we can calculate the number of years it will take the car to depreciate to 60% of its original worth.

= Current worth/ rate of depreciation

= 60%/15%

= 4 years

So, if the car (Car B) is depreciating at a rate of 15% per annum, the car will depreciate to just 60% in a period of 4 years.

Therefore, if the 2 cars are currently worth just 60% of their original values (recall that it took the first car 6 years and the second car 4 years to depreciate to their current values), the approximate difference in the ages of the two cars assuming they both started depreciating immediately after the years of their respective manufacture is:

= 6 years - 4 years

= 2 years

8 0

3 years ago