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lakkis [162]
3 years ago
13

Solve the system by the elimination method. 16x-3y=-1 -8x+y=3

Mathematics
1 answer:
mojhsa [17]3 years ago
7 0
Send me your email I will send the working.

The answers:
x = 1
y = -5

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A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 434 gram setting. It is
yan [13]

Answer:

No, there is not sufficient evidence to support the claim that the bags are underfilled

Step-by-step explanation:

A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 434 gram setting.

This means that the null hypothesis is:

H_{0}: \mu = 434

It is believed that the machine is underfilling the bags.

This means that the alternate hypothesis is:

H_{a}: \mu < 434

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

434 is tested at the null hypothesis:

This means that \mu = 434

A 9 bag sample had a mean of 431 grams with a variance of 144.

This means that X = 431, n = 9, \sigma = \sqrt{144} = 12

Value of the test-statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{431 - 434}{\frac{12}{\sqrt{9}}}

z = -0.75

P-value of the test:

The pvalue of the test is the pvalue of z = -0.75, which is 0.2266

0.2266 > 0.01, which means that there is not sufficient evidence to support the claim that the bags are underfilled.

7 0
2 years ago
Students were surveyed about what summer camp they would be attending.
FinnZ [79.3K]

Answer:

5% with the information I'm provided with. I need more info

if that's wrong

Step-by-step explanation:

3 0
2 years ago
For his phone service, Chris pays a monthly fee of $25, and he pays an additional $0.06 per minute of use. The least he has been
RoseWind [281]

Answer:

1029 minutes or 17.15 hours

Step-by-step explanation:

25+0.06M=86.74

0.06M=61.74

M=61.74/0.06=1029

4 0
2 years ago
I NEED HELP ASAP PLEASE PLOT IT BY DRAWING IT
IRISSAK [1]

Answer:

-1 1/2= 2 lines to the left of -1

1 1/4= 1 line to the right of 1

I hope this helps!

3 0
3 years ago
0.1281.6=<br> 1.6<br><br> (A)<br> 0.08<br> (B)<br> 0.8<br> (C)<br> 1.25<br> (D)<br> 8.0
Marizza181 [45]
Your answer should be: B. 0.8. Add 1281.6 and 1.6, you get 8.0.
8 0
3 years ago
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