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
Annette [7]
2 years ago
13

I NEED HELP ASAP WITH WORK SHOWN

Mathematics
1 answer:
DiKsa [7]2 years ago
3 0

Answers:

A) No solutions, elimination

B) Exactly one solution, substitution

Step-by-step explanation:

I'll be using elimination for this first one. I'm going to eliminate x by combining the equations.

First, let's multiply the top equation by 2.

2(-x + 5y = 8)

-2x + 10y = 16

Now, combine this equation with the bottom equation.

 -2x + 10y = 16

<u>+ 2x - 10y = 7</u>

            0 = 23

The result is false, so the first problem has no solution.

For the second problem, it would be better to use substitution because it would get pretty messy if we used elimination. I'm going to isolate x from the second equation.

-x + 2y = 0.6

Subtract 2y from both sides.

-x = -2y + 0.6

Divide both sides by -1 to make x positive.

x = 2y - 0.6

Now let's substitute x in the first equation.

0.5x + y = 0.3

0.5(2y - 0.6) + y = 0.3

y - 0.3 + y = 0.3

Combine like terms.

2y - 0.3 = 0.3

Add 0.3 to both sides.

2y = 0.6

Divide both sides by 2

y = 0.3

This problem has exactly one solution.

You might be interested in
n 2018, homes in East Baton Rouge (EBR) Parish sold for an average of $239,000. You take a random sample of homes in Ascension p
Olenka [21]

Answer:

Conclusion

   There is no sufficient evidence to conclude that the mean of the home prices from Ascension parish is higher than the EBR mean

Step-by-step explanation:

From the question we are told that

   The population mean for EBR is  \mu_ 1  = \$239,000

    The sample mean for Ascension parish  is \= x_2  = \$246,000

   The  p-value  is  p-value  =  0.045

     The level of significance is  \alpha = 0.01

The null hypothesis is  H_o : \mu_2  = \mu_1

The  alternative hypothesis is  H_a  :  \mu_2 > \mu_1

Here \mu_2 is the population mean for Ascension parish

   From the data given values we see that  

          p-value  >  \alpha

So we fail to reject the null hypothesis

So we conclude that there is no sufficient evidence to conclude that the mean of the home prices from Ascension parish is higher than the EBR mean

3 0
3 years ago
Mia's office recycled a total of 9 pounds of paper over 3 weeks. After 7 weeks, how many pounds of paper will Mia's office have
tankabanditka [31]

Answer:

21

Step-by-step explanation:

average 9 pounds per three weeks

divide 9 in 3 three weeks

3 pounds per week

7 times 3 is 21

5 0
2 years ago
7. In a state lottery, a player must choose 8 of the numbers from 1 to 40. The lottery commission then performs an experiment th
Vlad1618 [11]

Answer:a) P(8 of the players numbers are drawn)=1.3×10^-8

b) P(7 of the players number are drrawn)=3.33×10^-c) P(at least 6 of the players number were drawn)=1.84×10^-4

Step-by-step explanation:

Players has 8 combinations of numbers from 1-40. The outcome S contains all the combinations of 8 out of 40

a) P(8 of the players numbers are drawn)= 1/40/8= 1.3×10^-8

There are one in hundred million chances that the draw numbers are precisely the chosen ones.

b) Number of ways of drawing 78 selected numbers from 1-40=8×(40-7)

8×32

P(7 of the players number are drawn)=8×32/40 =3.33×10^-6.

There are approximately 300,000 chances that 7 of the players numbers are chosen

c) P(at least 6 players numbers are drawn)= 32/2×(8/6) ways to draw.

P(at least 6 players numbers are drawn)=P(all 8 chosen are drawn)+P(7 players numbers drawn)+P(6 chosen are drawn) = 1+ 8 x32/40/8 +[8\6 ×32/2]

P(at least 6 players numbers are drawn) = 1.84×10^-4.

There are approximately 5400chances that at least6 of the numbers drawn are chosen by the player.

5 0
3 years ago
Translate this sentence into an equation.
guajiro [1.7K]
To get this answer, you would want to start by dividing 96 by 6 to find matts score. (Answer 16) then just fill in the equation accordingly! m * 6 = 96
8 0
3 years ago
Which representation illustrates all the possible outcomes of flipping a coin and rolling
zaharov [31]

Answer:

2

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • At the new animated movie, there are 8 children for every 4 adults. If there are a total of 58 adults, how many people are in th
    7·1 answer
  • Two bird watchers position themselves at point A (the beach) and point C (the shed) which are 111 feet apart. The both spot a ra
    6·1 answer
  • Brainlist if correct<br><br> The value of 3over2 + 3over3 = ___.
    6·2 answers
  • (3.2x10^3) + (5.78 x 10^5) ?
    9·1 answer
  • Two eighth-grade classes are selling raffle tickets to raise money.
    10·2 answers
  • HERGEY FLURBY NECKY DECK MA DURKA GURKA THAT SPAGGHETIE EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEStephanie ran 3 miles in 30 minutes
    11·2 answers
  • Select the false statement
    14·2 answers
  • 10=z+6 plsss solve !!!!
    6·2 answers
  • A 0.0375<br><br>B 6<br><br>C 60<br><br>D 600<br><br><br><br><br><br>Can you help pleaseeee!!
    5·1 answer
  • Decide whether there is enough information given in the picture to prove that the
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!