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RideAnS [48]
3 years ago
9

A local coupon mailer charges $11 for each of the first three lines of an ad, and $5 for each additional line. What is the price

of a 5-line ad?
Mathematics
1 answer:
Taya2010 [7]3 years ago
5 0

Answer:

$43

Step-by-step explanation:

There are 5 lines in the ad in total.

It costs $11 for each of the first three lines which gives us:

3 x 11 = $33

There are now 2 lines left. Each additional line apart from the first three costs $5 extra. This gives us:

2 x 5 = $10

If we add the original $33 with the extra $10, we get a grand total of $43.

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A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 430 gram setting. It is
Leto [7]

Answer:

t=\frac{435-430}{\frac{29}{\sqrt{23}}}=0.827    

The degrees of freedom are given by:

df=n-1=23-1=22  

And the p value taking in count that we have a bilateral test we got:

p_v =2*P(t_{(22)}>0.827)=0.417  

Since the p value is higher than the significance level of 0.05 we have enough evidence to conclude that the true mean is not significantly different from 430 the required value

Step-by-step explanation:

Information given

\bar X=435 represent the mean for the weight

s=\sqrt{841}=29 represent the sample standard deviation

n=23 sample size  

\mu_o =430 represent the value that we want to verify

\alpha=0.05 represent the significance level

t would represent the statistic

p_v represent the p value

System of hypothesis

We are trying to proof if the filling machine works correctly at the 430 gram setting, so then the system of hypothesis for this case are:

Null hypothesis:\mu = 430  

Alternative hypothesis:\mu \neq 430  

In order to cehck the hypothesis the statistic for a one sample mean test is given by

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

Replacing the info given we have this:

t=\frac{435-430}{\frac{29}{\sqrt{23}}}=0.827    

The degrees of freedom are given by:

df=n-1=23-1=22  

And the p value taking in count that we have a bilateral test we got:

p_v =2*P(t_{(22)}>0.827)=0.417  

Since the p value is higher than the significance level of 0.05 we have enough evidence to conclude that the true mean is not significantly different from 430 the required value

8 0
3 years ago
When will the equation p(b)=520(0.88)^b have a value less than 100?
yulyashka [42]

Answer:

The given equation will have value less than 100 whenever the value of b is greater than 12.89

Step-by-step explanation:

For the given equation, p(b) = 520 × 0.88^{b} to have a value less than 100 we can establish inequality as:

                     p(b) < 100

         or,  520 × 0.88^{b} < 100

         or, \frac{520}{520} × 0.88^{b} < \frac{100}{520}

         or, 0.88^{b} < \frac{1}{5.2}

         or, ㏒ ( 0.88^{b} ) < ㏒  (\frac{1}{5.2})

         or, b× ㏒ 0.88 < ㏒  (\frac{1}{5.2})

         or,  \frac{log (\frac{1}{5.2}) }{log (0.88)}   <  b

         or, 12.89 < b

Hence for the equation to have value less than 100, b must be greater than 12.89.

3 0
4 years ago
Plz help it’s due tomorrow
Grace [21]
X= 28

The right angle equals 90Degrees. The lower half says 62.
So 90-62 = 28
7 0
3 years ago
Read 2 more answers
Simplify -9mn^2 / 3m^4n
m_a_m_a [10]

Answer:

-3mn^2/m^4n......please mark me brainliest!!!have a blessed day

4 0
3 years ago
You score 84 points in 5 games. How many points do you score per game?
pentagon [3]

Answer:

16.8

Step-by-step explanation:

84 / 5 = 16.8

6 0
1 year ago
Read 2 more answers
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