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
Levart [38]
3 years ago
5

Plz help and show how you did the math question

Mathematics
1 answer:
Nikitich [7]3 years ago
8 0

Answer:

x =  - 3

y =  - 2

Step-by-step explanation:

Since y=x+1 plug it into bottom equation as y.

x + 1= 5x + 13

Subtract 1 from both sides

x = 5x + 12

Subtract 5x from both sides

- 4x = 12

Divide both sides by -4

x =  - 3

Now x=-3 into the top equation to find y

- 3 + 1 =  - 2

y=-2

You might be interested in
A machine is used to fill containers with a liquid product. Fill volume can be assumed to be normally distributed. A random samp
motikmotik

Answer:

There is no statistical evidence at 1% level to accept that    the mean net contents exceeds 12 oz.

Step-by-step explanation:

Given that a random sample of ten containers is selected, and the net contents (oz) are as follows: 12.03, 12.01, 12.04, 12.02, 12.05, 11.98, 11.96, 12.02, 12.05, and 11.99.

We find mean = 11.015

Sample std deviation = 3.157

a) H_0: \bar x= 12 oz\\H_a: \bar x >12

(Right tailed test)

Mean difference /std error = test statistic

\frac{11.015-12}{\frac{3.157}{\sqrt{10} } } \\=-0.99

p value =0.174

Since p >0.01, our alpha, fail to reject H0

Conclusion:

There is no statistical evidence at 1% level to accept that    the mean net contents exceeds 12 oz.

3 0
3 years ago
When using the order of operations to simplify (7 + 3) * 4 - 1 + (6 + 8), which operation should be performed first?
enot [183]

Answer:

addition because it's in parentheses and following PEMDAS parentheses comes first so you do addition first.  

I hope you find this helpful :D

5 0
2 years ago
Read 2 more answers
Which statement is true?
valkas [14]
The answer is J because each one can be proven as false except answer J

4 0
2 years ago
4. Gloria the grasshopper is working on her hops.
aivan3 [116]

The path that Gloria follows when she jumped is a path of parabola.

The equation of the parabola  that describes the path of her jump is \mathbf{y = -\frac{5}{49}(x - 14)^2 + 20}

The given parameters are:

\mathbf{Height = 20}

\mathbf{Length = 28}

<em>Assume she starts from the origin (0,0)</em>

The midpoint would be:

\mathbf{Mid = \frac 12 \times Length}

\mathbf{Mid = \frac 12 \times 28}

\mathbf{Mid = 14}

So, the vertex of the parabola is:

\mathbf{Vertex = (Mid,Height)}

Express properly as:

\mathbf{(h,k) = (14,20)}

A point on the graph would be:

\mathbf{(x,y) = (28,0)}

The equation of a parabola is calculated using:

\mathbf{y = a(x - h)^2 + k}

Substitute \mathbf{(h,k) = (14,20)} in \mathbf{y = a(x - h)^2 + k}

\mathbf{y = a(x - 14)^2 + 20}

Substitute \mathbf{(x,y) = (28,0)} in \mathbf{y = a(x - 14)^2 + 20}

\mathbf{0 = a(28 - 14)^2 + 20}

\mathbf{0 = a(14)^2 + 20}

Collect like terms

\mathbf{a(14)^2 =- 20}

Solve for a

\mathbf{a =- \frac{20}{14^2}}

\mathbf{a =- \frac{20}{196}}

Simplify

\mathbf{a =- \frac{5}{49}}

Substitute \mathbf{a =- \frac{5}{49}} in \mathbf{y = a(x - 14)^2 + 20}

\mathbf{y = -\frac{5}{49}(x - 14)^2 + 20}

Hence, the equation of the parabola  that describes the path of her jump is \mathbf{y = -\frac{5}{49}(x - 14)^2 + 20}

See attachment for the graph

Read more about equations of parabola at:

brainly.com/question/4074088

7 0
2 years ago
PLZ HELP QUICK PLZ
olya-2409 [2.1K]

Answer:

hope this helps you

5 0
3 years ago
Other questions:
  • A bag contains three red marbles, two green ones, one lavender one, four yellows, and five orange marbles. HINT [See Example 7.
    7·1 answer
  • Please help me with this!!!!!!!!!!
    11·1 answer
  • Cristine's middle school has a total of 900 students and 45 teachers. The local high school has 110 teachers and a student-teach
    8·2 answers
  • Evaluate the following using the powers of ten rules.<br><br><br> 100 divided by 2658
    7·1 answer
  • I'm in a rush &amp; I really need to solve these two problems:
    14·1 answer
  • Will mark brainliest if answered
    5·1 answer
  • Triangle LKJ is similar to triangle TSR. Which of the following statements is true?
    10·1 answer
  • Use the​ add-on method for determining interest on a loan of ​$​,2540 with an annual rate of 6​% and a term of 4 years.​ Then, d
    10·1 answer
  • Someone please help me with this problem
    13·2 answers
  • Eva bought a book that was on sale for 20% off the retail price. The retail price of the book was $12. What was the price Eva pa
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!