1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ronch [10]
3 years ago
15

PLEASE HELP!!!!!!!!! URGENT!!!

Mathematics
1 answer:
bearhunter [10]3 years ago
3 0

Answer:

a

Step-by-step explanation:

When you multiply the top equation by 3 you would get 6x when you multiply the bottom equation by -2 you would have -6x that way when you combine the equations they would eliminate each other and you would only be left with y as a variable

You might be interested in
A recent survey of 50 executives who were laid off during a recent recession revealed it took a mean of 26 weeks for them to fin
drek231 [11]

Answer:

The pvalue of 0.0113 < 0.05 means that there is sufficient evidence to conclude that the mean time to find another position is less than 28 weeks at the 5% level of significance

Step-by-step explanation:

The null hypothesis is:

H_{0} = 28

The alternate hypotesis is:

H_{1} < 28

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.

A recent survey of 50 executives who were laid off during a recent recession revealed it took a mean of 26 weeks for them to find another position.

This means that n = 50, X = 26

Assume the population standard deviation is 6.2 weeks.

This means that \sigma = 6.2

Does the data provide sufficient evidence to conclude that the mean time to find another position is less than 28 weeks at the 5% level of significance

We have to find the pvalue of Z, looking at the z-table, when \mu = 28. It if is lower than 0.05, it provides evidence.

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

z = \frac{26 - 28}{\frac{6.2}{\sqrt{50}}}

z = -2.28

z = -2.28 has a pvalue of 0.0113 < 0.05.

The pvalue of 0.0113 < 0.05 means that there is sufficient evidence to conclude that the mean time to find another position is less than 28 weeks at the 5% level of significance

5 0
3 years ago
A ship is sailing on the sea. It travels 50 miles at 60° to the horizontal. Then the ship travels 90 miles at 30° to the horizon
pav-90 [236]

Answer:

(25\sqrt{3}+45)\ miles

Step-by-step explanation:

we know that

The total vertical distance (total miles North) traveled is equal to

d=50sin(60^o)+90sin(30^o)

Remember that

sin(60^o)=\frac{\sqrt{3}}{2}

sin(30^o)=\frac{1}{2}

substitute

d=50(\frac{\sqrt{3}}{2})+90(\frac{1}{2})

d=(25\sqrt{3}+45)\ miles

7 0
3 years ago
Spencer goes on a 5 hour work shift. After
romanna [79]

Answer:

18/5 hours or 3 3/5 hours

Step-by-step explanation:

I assume the break is at 7/5 hours.

5 hours - 7/5 hours = 25/5 hours - 7/5 hours = 18/5 hours = 3 3/5 hours

5 0
3 years ago
Given that 110ₓ = 40₅ , find the value of x.
adell [148]

Answer:

is therr more to that question

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
To which of the following sets of numbers does ⅞ belong?
artcher [175]

Answer:

A. Rational number

Step-by-step explanation:

It is not a whole number or integer because it's a fraction. so it's the rational of a whole number.

7 0
3 years ago
Other questions:
  • What is the area of this triangle?
    8·1 answer
  • What is the MAXIMUM amount you should be spending on housing in a situation where your GROSS INCOME is $2000 per month? For rent
    12·1 answer
  • We toss two dice 1,000 times. How many times do we expect to have the sum of the two dice equal to 4?
    5·1 answer
  • Please help! It's hard.. at least for me. XD
    7·2 answers
  • Identify the greatest common factor <br> or label as prime<br> ** 28a^2-4ab
    15·1 answer
  • Can someone please define the following terms and give me an example of each??
    13·1 answer
  • PLEASE HEP ME WITH THIS ONE
    12·1 answer
  • Solve giving brainlist if it right
    7·1 answer
  • An investment firm invested in two companies last year. They invested \$7000 in Company A and made a profit of 13%. They investe
    6·1 answer
  • The probability distribution of all possible values of the sample proportion is the
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!