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
Sergio [31]
2 years ago
8

In 1978, the amount of earnings required to earn one Social Security credit was $250. Thirty years later, in 2008, this amount w

as $1,150. What was the percent increase in the amount required to earn a credit, over this 30-year span? Use a percent sign .
Mathematics
1 answer:
vagabundo [1.1K]2 years ago
3 0

Answer:

the percentage increase is 360%

Step-by-step explanation:

The computation of the increase in percentage is shown below;

Given that

SOcial security credit as on 1978 is $250

And, the social security tax as on 2008 is $1,150

Now based on the above information

The percentage increase is

= ($1,150 - $250) ÷ ($250)

=  360%

Hence, the percentage increase is 360%

You might be interested in
Factorise fully<br> 4y - 6
Zina [86]
The answer to the question is 2(2y-3
5 0
3 years ago
Read 2 more answers
A safety auditor at a paint factory took a random sample of 25 cans of paint from a production run of over
stepan [7]

Using the t-distribution, as we have the standard deviation for the sample, it is found that the 95% confidence interval is (29.6, 44.4).

<h3>What is a t-distribution confidence interval?</h3>

The confidence interval is:

\overline{x} \pm t\frac{s}{\sqrt{n}}

In which:

  • \overline{x} is the sample mean.
  • t is the critical value.
  • n is the sample size.
  • s is the standard deviation for the sample.

The critical value, using a t-distribution calculator, for a <u>two-tailed 95% confidence interval</u>, with 25 - 1 = <em>24 df</em>, is t = 2.0639.

The other parameters are given by:

\overline{x} = 37, s = 18, n = 25.

Hence, the bounds of the interval are given as follows:

\overline{x} - t\frac{s}{\sqrt{n}} = 37 - 2.0639\frac{18}{5} = 29.6

\overline{x} + t\frac{s}{\sqrt{n}} = 37 + 2.0639\frac{18}{5} = 44.4

The 95% confidence interval is (29.6, 44.4).

More can be learned about the t-distribution at brainly.com/question/16162795

7 0
2 years ago
Read 2 more answers
By accident, four burned-out bulbs have been mixed in with 20 good ones. Ken is replacing old bulbs in his house. If he selects
ollegr [7]

We will be using the fact that P(A \, and \,B) = P(A) \cdot P(B), where P(A) is the probability that the first bulb works and P(B) is the probability that the second bulb works.


The probability that the first bulb works is \frac{20}{24} = \frac{5}{6}. However, when we take one out (given that the first bulb works) we now have 19 working bulbs and 4 bad ones. This means that the probability that the second bulb works is \frac{19}{23}.


Now, we can find our final probability:

\dfrac{5}{6} \cdot \dfrac{19}{23} = \boxed{\dfrac{95}{138}}

7 0
3 years ago
Pls help thirty points and will do branliest
Luba_88 [7]

The dashed-line triangle is a dilation-reduction, and the scale factor is (1/3).  Note how the former triangle is 1/3 the size of the larger one.

8 0
2 years ago
write a systems of equation where one equation has a slope of 2 and goes through the point 0, 2 and the second equation is paral
AleksandrR [38]

Answer:

go up the hill and roll down then you willf igure it out

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • 3/4 of a class went to see a movie. If 1/2 of the class went to the afternoon session, what fraction of the class went to the ev
    15·2 answers
  • You and some friends went out to t.g.i. Fridays for dinner. You ordered a root beer,sweet potato fries and cheese quesadillas. T
    10·1 answer
  • Please help ............<br>plzzzz​
    9·1 answer
  • Which linear inequality is represented by the graph?
    10·1 answer
  • A General Motors buyer-incentive program offered a 5.5% rebate on the selling price of a new car. What rebate (in dollars) would
    8·1 answer
  • Complete the proof.
    7·1 answer
  • 5) A book is sold at $152.50 and a discount of 9% is given for students.
    11·1 answer
  • True or False?<br><br> If x∈ W, then x∈ Z
    13·1 answer
  • I will give a lot of points to help
    6·1 answer
  • Find the range for the given domain: {-3,-1 and 3} and the function is y=3x^2-2x+1.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!