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murzikaleks [220]
3 years ago
9

I need this answers ASAP! A board game costs $28. You buy it at a 20% discount. You have to pay a sales tax of 13%. How much did

you pay?
Mathematics
1 answer:
andriy [413]3 years ago
8 0

Answer:

$26.04

Step-by-step explanation:

I did this course already

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The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 year
puteri [66]

Answer:

z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29  

Step-by-step explanation:

information given

\bar X=10.6 represent the sample mean  

\sigma=4.1 represent the population standard deviation

n=45 sample size  

\mu_o =12 represent the value that we want to test  

\alpha=0.05 represent the significance level for the hypothesis test.  

z would represent the statistic

p_v represent the p value for the test

Hypothesis to test

We want to test if the true mean is less than 12, the system of hypothesis would be:  

Null hypothesis:\mu \geq 10  

Alternative hypothesis:\mu < 10  

The statistic is given by:

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

Replacing the info given we got:

We can replace in formula (1) the info given like this:  

z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29  

8 0
3 years ago
Write this trinomial in factored from 6a^2-17a+7
timama [110]

Answer:

(3a-7) (2a-1) is the answer

Step-by-step explanation:

8 0
3 years ago
Susan open an account with $100. She deposits $100.00 every year to an account that earns simple interests at a rate of 5%. If s
NemiM [27]

Answer:

$20

Step-by-step explanation:

multiply 100.00 x 5% which is 100x 0.05, then it will give you 5.

add 5, 4 more times which will give you 20

3 0
3 years ago
I need help solving this equatioion. <br> (2xy)(3y)
aniked [119]

Step-by-step explanation:

So first we will multiply

(2xy)(3y)

=

6x {y}^{2}

7 0
3 years ago
I promise its easy ok
Soloha48 [4]

Answer:

1)1/3

2)3

Step-by-step explanation:

rise over run then reduce

6 0
3 years ago
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