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
topjm [15]
3 years ago
6

What is the value of y in the solution to the following system of equations ?

Mathematics
1 answer:
Katen [24]3 years ago
4 0
We can use substitution method to solve for this system of equations. We calculate as follows:

<span>2x – 6y = –14
-6y = -14 -2x
y = x/3 + 7/3

 </span>5x – 3y = –11
 5x – 3(x/3 + 7/3) = –11
5x - x + 7 = -11
4x = -11 -7
4x = -18
x = -9/2
y = -9/2(3) + 7/3
y = 5/6
You might be interested in
The difference between two numbers is 9 and the product of the numbers is 162. Find the two numbers
fiasKO [112]
Let the no be X and Y

acc to ques....

x-y=9 .........1

xy=162 ..........2

substituting value from 1 in 2 we get;

x=9+y

[9+y][y] = 162

y^2+9y = 162

y^2 + 9y - 162=0

y^2 + 18y - 9y - 162=0

y[y+18] + 9[y+18]=0

[y+9][y+18}

y= -9.................................3


y= -18......................................4



case 1 :

y= -9

x = 9-9=0

case 2:

y= -18

x= 9-18 = -9
7 0
3 years ago
(6×5)×_=3,000 complete the pattern
Art [367]
(6×5)×100=3,000 Since 6×5=30×100=3,000
5 0
3 years ago
Mary has $267 in her checking account . She writes checks for $33,$65 and 112. What is the balance in her account now ?
natulia [17]

Answer:

57

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
The resting heart rate of 60 patients is shown in the frequency table below.
Murrr4er [49]

The standard deviation is 9.27. The typical heart rate for the data set varies from the mean by an average of 9.27 beats per minute.

<h3>How to determine the standard deviation of the data set?</h3>

The dataset is given as:

Heart Rate  Frequency

60 1

65 3

70 4

75 12

80 8

85 15

90 9

95 5

100 3

Calculate the mean using

Mean = Sum/Count

So, we have

Mean = (60 * 1 + 65 * 3 + 70 * 4 + 75 * 12 +  80 * 8 +  85 * 15 +  90 * 9 +  95 * 5 + 100 * 3)/(1 + 3 + 4 + 12 + 8 + 15 + 9 + 5 + 3)

Evaluate

Mean = 82.25

The standard deviation is

\sigma = \sqrt{\frac{\sum f(x - \bar x)^2}{\sum f -1}}

So, we have:

SD = √[1 * (60 - 82.25)^2 + 3 * (65 - 82.25)^2 + 4 * (70 - 82.25)^2 + 12 * (75 - 82.25)^2 + 8 * (80 - 82.25)^2 +  15 * (85 - 82.25)^2 +  9 * (90  - 82.25)^2 + 5 * (95 - 82.25)^2 + 3 * (100 - 82.25)^2)]/[(1 + 3 + 4 + 12 + 8 + 15 + 9 + 5 + 3 - 1)]

This gives

SD = √85.9533898305

Evaluate

SD = 9.27

Hence. the standard deviation is 9.27. The typical heart rate for the data set varies from the mean by an average of 9.27 beats per minute.

Read more about standard deviation at:

brainly.com/question/4079902

#SPJ1

5 0
1 year ago
Can someone answer this for me.
Gnesinka [82]
The slope for A is 2/5 and the slope for B is -2/6
3 0
3 years ago
Other questions:
  • Qual o resultado da subtração dos dois polinômios abaixo? (2x2 + 4x) (–2x2 + x – 6)
    8·1 answer
  • The sum of the first 3 terms of an arithmetic sequence is 21,while their product is 315.determine these 3 terms
    13·2 answers
  • Lattice square to resolve 932X73
    11·1 answer
  • a solid pyramid with a square base with side 12 cm and height 25 cm is made of metal. The metal is melted to form spherical ball
    5·1 answer
  • What is the numerical factor of a multiplication expression like 3x
    7·1 answer
  • Determine the volume of the cylinder
    5·1 answer
  • Ohhh so your a master chef name every meal on the McDonald's menu
    14·2 answers
  • Help me pls I’m begging
    13·2 answers
  • Helpppppppppppppppppppppppppp
    8·1 answer
  • Which type of transformation is shown here?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!