HELP ME PLEASE I WILL BE SOOOO THANKFUL

A tutor works with a group of students. The tutor charges $40 plus $30 for each student in the group. Today the tutor has s stud

IgorLugansk [536]

40 + 30s = 220

30 for each student (s) and the one charge of 40 would get the tutor 220 dollars.

7 0

3 years ago

Read 2 more answers

Solve 2x + 3 = 9 nowwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww

Stels [109]

Answer:

x=3

Step-by-step explanation:

2

x

+

3

=

9

We want to find the variable

x

, so we have to make it alone. To do so, first subtract

3

from both sides of the equation:

2

x

+

3

−

3

=

9

−

3

2

x

=

6

Now divide both sides by

2

:

2

x

2

=

6

2

So the final answer is:

x

=

3

Hope this helps!

5 0

2 years ago

Read 2 more answers

Round to the place value of the underlined digit 862,840 underlined 6

omeli [17]

Answer:

900,000

Step-by-step explanation:

there you go bud

4 0

3 years ago

It is believed that Lake Tahoe Community College (LTCC) Intermediate Algebra students get less than seven hours of sleep per nig

Kitty [74]

Answer: No , at 0.05 level of significance , we have sufficient evidence to reject the claim that LTCC Intermediate Algebra students get less than seven hours of sleep per night, on average.

Step-by-step explanation:

Let $\mu$ denotes the average hours of sleep per night.

As per given , we have

$H_0:\mu=7\\H_a:\mu$

, since $H_a$ is left-tailed and population standard deviation is unknown, so the test is a left-tailed t -test.

Also , it is given that ,

Sample size : n= 22

Sample mean : $\overline{x}=7.24$

Sample standard deviation : s= 1.93

Test statistic : $t=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}$

i.e. $t=\dfrac{7.24-7}{\dfrac{1.93}{\sqrt{22}}}\approx0.58$

For significance level $\alpha=0.05$ and degree of freedom 21 (df=n-1),

Critical t-value for left-tailed test= $t_{\alpha, df}=t_{0.05,21}=- 1.7207$

Decision : Since the test statistic value (0.58) > critical value 1.7207, it means we are failed to reject the null hypothesis .

[Note : When $|t_{cal}|>|t_{cri}|$ , then we accept the null hypothesis.]

Conclusion: We have sufficient evidence to reject the claim that LTCC Intermediate Algebra students get less than seven hours of sleep per night, on average.

6 0

2 years ago

What is the solution to sqrt 17-x=x+3? Show your work.

snow_lady [41]

Answer:

$x=1$