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
brilliants [131]
3 years ago
5

Can someone help me with this and explain it to me please? :) CHECK ATTACHED

Mathematics
1 answer:
babymother [125]3 years ago
4 0
23. not equivalent because the first row 3x-9y=5 then if you multiplied this equation by 2 it will be 2(3x-9y) = 2(5) so 6x-18y= 10 not 6x-9y=10


24.equivalent because the second row 2y-6x=8 multiplied by 2 is 2(2y-6x)= 2(8) so 4y-12x=16

25. equivalent because the first row 5x+3y=19 multiplied by 2 is 2(5x+3y) = 2(19) SO 10X+6Y=38 and the second row 2x+4y=20 multiplied by 5 is 5(2x+4y)= 5(20) so 10x+20y=100
You might be interested in
A standard deck of 52 cards consists of 4 suits (hearts, diamonds, clubs, and spades). Each suit includes cards numbered 2 throu
Margaret [11]
B hope this helps you on your test
6 0
3 years ago
Read 2 more answers
A. Sin40=6/x<br> B. Sin40= x/6<br> C. Cos40= x/6<br> D. Cos40=6/x
STatiana [176]
The answer is A. sin40=6/x
7 0
3 years ago
According to the Bureau of Labor Statistics, citizens remain unemployed for an average of 15.9 weeks before finding their next j
Ahat [919]

Complete Question

According to the Bureau of Labor Statistics, citizens remain unemployed for an average of 15.9 weeks before finding their next job (June, 2008). Suppose you want to show that Louisiana has been effective in getting their unemployed back to work sooner. You take a random sample of 50 citizens who were unemployed six months earlier and ask them to report the duration. You find that the average time spent unemployed was 13.4 weeks with a sample standard deviation of the time unemployed is 6.7 weeks.

1 Which of the following statements is the correct alternative hypothesis?

2 The test statistic for testing the hypothesis is

a. -2.64

b. -2.32

c. -2.11

d. -1.28

e. none of these are correct

Answer:

1  

 The  alternative hypothesis  H_a  :  \mu < 15.9

2

The  test statistics z =  -2.64  

Step-by-step explanation:

From the question we are told that

     The population  mean value for time  citizens remain unemployed is  \mu  =  15.9 \  weeks

     The  sample size is  n =  50

     The  sample standard deviation is  6.7 weeks.

      The  sample mean value for time  citizens remain unemployed is  \mu  =  15.9 \  weeks

       

     The  null hypothesis is  H_o  :  \mu \ge 15.9

      The  alternative hypothesis  H_a  :  \mu < 15.9

Generally test statistics is mathematically represented as

       z =  \frac{ \= x  - \mu }{ \frac{s}{\sqrt{n} } }  

=>    z =  \frac{13.4 - 15.9}{\frac{6.7}{\sqrt{50}}}

=>     z =  -2.64  

   

7 0
3 years ago
PLEASE HELP question 30
weeeeeb [17]

Answer:

B

Step-by-step explanation:

d+c=180 because 360 degrees are in the parrallegram so divide that by 2 so 114+c=180 so

c=66

3 0
3 years ago
Help please and thanks !!
drek231 [11]

Answer:

Step-by-step explanation:

I think you put it in the middle

4 0
2 years ago
Other questions:
  • Help fast!!!!!!!!! Solve for X<br><br><br> z=6 π x y
    10·1 answer
  • Which of the following points are on the line given by the equation y equals 2x?
    14·1 answer
  • The larger of two numbers is five more than twice the smaller number. The sum of the two numbers is 38. Find the numbers.
    8·2 answers
  • Combine like terms: <br> -w^3+8-2w^3-10
    15·2 answers
  • The height of a door has a dimension given in feet and inches. Which unit of measure is more accurate?
    10·2 answers
  • What does 8x + 4 equal?
    5·2 answers
  • Help ASAP! will give brainliest!
    10·1 answer
  • NEED THIS ANSWER BY THE END OF THE DAY PLEASE HELP !!
    13·1 answer
  • 2x - 3y &lt;= 9<br> 2x + 3y &lt;= 3
    5·1 answer
  • Given (−4, 8) and (−12, 7), find the component form of the vector ⃗⃗⃗⃗⃗ .
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!