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3 years ago

Sam has 9 yellow pencils in his desk. Three fourths of his pencils are yellow How many pencils does Sam have in his desk

Mathematics

2 answers:

polet [3.4K]3 years ago

7 0

Sam has 12 pencils in total.

Crank3 years ago

6 0

Sam has exactly 12 pencils in his desk.

Demonstration:

2/3 of 9 is 3. add 3 to 9, you get 12.

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According to the US Bureau of Labor Statistics publication News, self-employed persons with home-based businesses work a mean of

worty [1.4K]

Answer:

The answer is below

Step-by-step explanation:

Given that mean (μ) = 23 hours, standard deviation (σ) = 10 hours

a) The population is a group of self employed home based workers while the variable is the number of hours worked per week.

b) The mean of the distribution of sample means (also known as the Expected value of M) is equal to the population mean μ.

$\mu_x=\mu=23\ hours$

The standard deviation of the distribution of sample means is called the Standard Error of M, it is given by:

$\sigma_x=\sigma/\sqrt{n} =\frac{10}{\sqrt{100} }=1$

c) $\mu_x=\mu=23\ hours$

$\sigma_x=\sigma/\sqrt{n} =\frac{10}{\sqrt{1000} }=0.32$

d) The sample size has no effect on the mean, hence increasing the sample size does not change the mean.

The square root of sample size is inversely proportional to the standard deviation therefore increasing the sample size reduces the standard deviation.

5 0

3 years ago

Is (1, 2) a solution of 6x-y > 3?

nikdorinn [45]

Answer:

yes

Step-by-step explanation:

6(1)-2>3

6-2>3

4>3

3 0

3 years ago

The sum of four consecutive odd number is 72.Find the number

ArbitrLikvidat [17]

Answer:

15, 17, 19, and 21

Step-by-step explanation:

make the equation

x+x+2+x+4+x+6=72

simplify

4x+12=72

x+3=18

x=15

3 0

2 years ago

Read 2 more answers

Laura takes very good care of her vehicles. She owns a blue van and a red truck. Although she bought them both new, she has owne

MrRissso [65]

The age of the van owned = 12 years

The age of the truck owned = 29 years

Step-by-step explanation:

Here, the given question is INCOMPLETE.

Laura takes very good care of her vehicles. She owns a blue van and a red truck. Although she bought them both new, she has owned the truck for 17 years longer than she has owned the van. If the sum of the ages of the vehicles is 41 years, how old is the van and how old is the truck?

Let us assume the number of years Laura has owned the van = S years

So, according to the question:

The number of years she has owned truck = S + 17 years

Now, Sum of the age of ( Truck + Van) = 41 years

⇒ (S + 17 years) + (S years) = 41 years

or, 2 S + 17 = 41

or, 2 S = 4 1 -1 7 = 24

or, S = 24/2 = 12 years

or, S = 12 years

Hence the age of the van owned = 12 years

The age of the truck owned = S + 17 = 12 + 17 = 29 years

6 0

3 years ago

A company invests $32000. after 4 years of growth at the same rate each year, the investment is worth $42692. find the annual gr

Nostrana [21]

Answer:

R = 33.35%

Step-by-step explanation:

that is the solution above

6 0

1 year ago