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
miskamm [114]
3 years ago
5

3x+y=4 x+2y=-2 what is the answer

Mathematics
1 answer:
Taya2010 [7]3 years ago
3 0

Answer:

2(3x+y=4)

1(x+2y=-2)

6x+2y=8

<u>(-) x+2y=-2</u>

<u>5x=10</u>

5

x=2

x+2y=-1

2+2y=-1

<u>-</u><u>2</u><u> -</u><u>2</u>

<u>2y=-</u><u>3</u>

2

y=-3/2

Step-by-step explanation:

  1. multiply the first equation by 2 to make y equal to each other.
  2. subtract to eliminate y
  3. divide by 5 to get x
  4. take one of the equations
  5. replace x by 2 to solve for y
You might be interested in
Division area model answers
Likurg_2 [28]

Step-by-step explanation:

I don't know what your question was it just says division area model answers so I did you a model for division area and your answer for that would be 94 remainder 12 I hope that helps . Like I said I don't know what your question is .

3 0
2 years ago
We have x tables and y chairs available for prom.
gladu [14]

Answer:

THE ANWSER IS 4

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A researcher is interested in the lengths of Salvelinus fontinalis (brook trout), which are known to be approximately Normally d
kompoz [17]

Answer:

c. 0.1151

Step-by-step explanation:

d) the probability that, on average, fish are larger than 86 centimeters in length.The area under part of a normal probability curve is  directly proportional to probability and the value is calculated as

z = (x₁−x) /σ

where z = propability of normal curve

x₁ = variate mean = 86cm

x = mean of 80cm

σ = standard deviation = 5cm

applying the formula,

z= (86-80)/5

z = 6/5 =1.2

Using a table of partial areas beneath the standardized normal curve (see Table of normal curve, a z-value of 1.2 corresponds to an area of 0.3849 between the mean value. but, because the standard curve has 0.5, then will minus 0.3849 from 0.5= 0.5 - 0.3849 = 0.1151

Thus the probability of a fish are larger than 86 centimeters in length is 0.1151

5 0
4 years ago
X=6<br> y=2x-3<br><br> i’m doing Solve Systems of Equations by Substitution.
Oksana_A [137]

y=9

Step-by-step explanation:

y=2(6)-3

y=12-3

y=9

4 0
3 years ago
Read 2 more answers
Share $600 between Anna and Raman in the ratio 3:7 and 1:4
Ulleksa [173]

Answer:

3 : 7 =>

Anna = $180

Raman = $420

1 : 4 =>

Anna = $120

Raman = $480

Step-by-step explanation:

<u>Shares when ratio is 3 : 7</u>

Anna : Raman = 3 : 7

Sum of ratio 10

Anna's share=

                   \frac{3}{10} \times 600 = \$  180

Raman 's share=

                  \frac{7}{10} \times 600 = \$ 420

<u>Shares when ratio is 1 : 4</u>

Anna : Raman = 1 : 4

Sum of ratio = 5

Anna 's share =

                   \frac{1}{5} \times 600 = \$ 120

Raman's share =

                  \frac{4}{5} \times 600 = \$ 480

8 0
3 years ago
Other questions:
  • Find the perimeter and the area of the LED screen of the camera. (Simplify your answer completely.) perimeter units area square
    7·1 answer
  • BRAINLIESTTTTT ASAP!!!
    15·1 answer
  • The ordered pair for an x-intercept has an x-value of 0 A.True or False
    14·2 answers
  • When rounded to the nearest hundred, I become 3,000. What numbers could I be?
    9·2 answers
  • If a right triangle has a hypotenuse of length 100 units and one leg of length 60 units, what is the length of the other leg?
    10·2 answers
  • Find an identity for cos(4t) in terms of cos(t)
    5·2 answers
  • A computer password uses 5 letters where no letter may be repeated. How many passwords are possible?
    7·2 answers
  • Use special right triangle ratios to find the lengths of the other leg and the hypotenuse
    9·2 answers
  • Given m∠1=65°, find the measure of each missing angle. Give your reasoning.
    8·1 answer
  • Use the whole numbers 1 through 9 only one time each to find the largest possible value for x
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!