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3 years ago

12

The sum of 3 times a number and 1 is 17 decreased by the number. What expression will be translated on the left side of the equa

ls sign

1 answer:

Zepler [3.9K]3 years ago

3 0

Answer:

=0

Step-by-step explanation:

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for every left-handed person, there are about 4 right-handed people. if there are 30 students in a class, perdict the number of

Amanda [17]

So in every 5 people, theres 1 left and 4 right.

so therefore there is 25 right handed people and 5 left handed people

7 0

2 years ago

2x+y+4z=16<br> 5x-2y+2z=-1<br> X+2y-3z=-9

LekaFEV [45]

Answer:

24

Step-by-step explanation:

6 0

2 years ago

A professor thinks that the students in her statistics class this term are less creative than most students at this university.

choli [55]

Answer:

It is not enough evidence to reject null hypothesis. It is not enough evidence to say that mean score is not equal to 35.

Step-by-step explanation:

$\mu=35\\n=23\\\=x=33\\s=5\\\alpha=0.1$

1. Null and alternative hypothesis

$H_{0}:\mu=35\\H_{1}:\mu$

2. Significance level

$\alpha=0.1\\1-\alpha=0.99$

Freedom degrees is given by:

$v=n-1\\v=23-1=22$

For a sgnificance level of 0,01 and 22 freedom degrees, t-student distribution value is:

$t_{0.01;23}=-2. 5083$

3. Test statistic

$t=\frac{\=x-\mu}{\frac{s}{\sqrt{n} } }$

$t=\frac{33-35}{\frac{5}{\sqrt{23} } }$

$t=-1,918$

In this case, we have an one left tailed analysis, it means that null hypothesis is rejected if $t$

$-1.918>-2.5083$

Conclusion:

It is not enough evidence to reject null hypothesis. It is not enough evidence to say that mean score is not equal to 35.

3 0

3 years ago

A candidate for city council wants to determine how much support she has among the voters in her district by conducting a survey

SpyIntel [72]

I think c .. I already took a course .. and the test had that question.. I cant remember the answer though

5 0

3 years ago

Read 2 more answers

Jasmine is buying beans. She bought r pounds of red beans that cost $2 per pound and b pounds of

horsena [70]

Answer:

A and B (2r and 7b)

Step-by-step explanation:

If she has black beans that cost $7 per pound the expression should be 7b. Hope this helps! Lmk if you have any more questions.

4 0

2 years ago