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2 years ago

0.4 is 10 times as much as ?

2 answers:

8 0

<span>0.4 is 10 times as much as ? for answering this, we put x an unknown number such that 0.4 is 10 times as much as x, so it does mean 0.4 =10x, so for finding the value of x, we divids 0.4 by 10, x= 0.4/10=0.04. the answer is 0.4 is 10 times as much as 0.04Hope this helps. Let me know if you need additional help!</span>

grigory [225]2 years ago

5 0

0.4 is 10 times as much as 0.04

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A market research firm supplies manufacturers with estimates of the retail sales of their products from samples of retail stores

KengaRu [80]

Answer:

The 95% confidence interval for the difference of means is (7.67, 16.33).

The estimate is Md = 12.

The standard error is sM_d = 2.176.

Step-by-step explanation:

We have to calculate a 95% confidence interval for the difference between means.

The sample 1 (this year's sales), of size n1=36 has a mean of 53 and a standard deviation of 12.

The sample 2 (last year's sales), of size n2=49 has a mean of 41 and a standard deviation of 6.

The difference between sample means is Md=12.

$M_d=M_1-M_2=53-41=12$

The estimated standard error of the difference between means is computed using the formula:

$s_{M_d}=\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma_2^2}{n_2}}=\sqrt{\dfrac{12^2}{36}+\dfrac{6^2}{49}}\\\\\\s_{M_d}=\sqrt{4+0.735}=\sqrt{4.735}=2.176$

The degrees of freedom are:

$df=n_1+n_2-1=36+49-2=83$

The critical t-value for a 95% confidence interval and 83 degrees of fredom is t=1.989.

The margin of error (MOE) can be calculated as:

$MOE=t \cdot s_{M_d}=1.989 \cdot 2.176=4.328$

Then, the lower and upper bounds of the confidence interval are:

$LL=M_d-t \cdot s_{M_d} = 12-4.328=7.67\\\\UL=M_d+t \cdot s_{M_d} = 12+4.328=16.33$

The 95% confidence interval for the difference of means is (7.67, 16.33).

7 0

2 years ago

For each gym membership sold, the gym keeps $42 and the employee who sold it gets $8. What is the commission the employee earned

horrorfan [7]

Answer:

Commission of the employee = 16%

Step-by-step explanation:

It is given that:

Amount kept by gym = $42

Amount given to employee = $8

Total fee = 42 + 8 = $50

Commission rate = $\frac{Commission}{Total\ fee}*100$

Commission rate = $\frac{8}{50}*100$

Commission rate = 0.16 * 100 = 16%

Therefore,

Commission of the employee = 16%

4 0

2 years ago

Read 2 more answers

-7(-2a+6)=2a-6(-a+7)

Alenkinab [10]

Answer:

$a=0$

Step-by-step explanation:

$-7(-2a+6)=2a-6(-a+7)$

$14a-42=2a+6a-42$

$14a-42=8a-42$

$6a-42=-42$

$6a=0$

$a=0$

6 0

3 years ago

two cylindrical candles have a scale factor of 3:5. The larger candle has a volume of 40(3.14) cubic inches. Fund the volume of

joja [24]

$5 = 40\pi \\ 3 =( (40 \div 5) \times 3)\pi \\ = 24\pi$

7 0

3 years ago

What is 10 of 25%......................................

tia_tia [17]

the math behind it:
your equation looks like this: .25x = 10
then you divide both sides by .25 and then ur equation looks like this: x=40
by the way the variable x stands for the number you are looking for. and since x=40, the number you are looking for is 40
well i hope i helped!

3 0

2 years ago