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
valentina_108 [34]
3 years ago
9

What is the solution to this system 2x + y = 1 3x – y = –6 (–1, 3)

Mathematics
1 answer:
vova2212 [387]3 years ago
3 0

Answer: 2x+y=1

3x-y=-6

==>5x=-5

==>x=-1 and y=1-2*(-1)=3

Sol={(-1,3)}

Answer A

You might be interested in
What is the median of the data set?
Crazy boy [7]

Answer:

98

Step-by-step explanation:

82,87,98,106,120

cross them out from both sides until you find the middle number

if there is two then add them and divide by 2

7 0
4 years ago
HELLO!! :) CAN U PLEASE HELP ME WITH THIS PROBLEM? I WILL GIVE YOU BRAINLIEST AND A THANKS!! PLEASE EXPLAIN TOO!!
miskamm [114]

Answer:

21square feet

Step-by-step explanation:

Count the whole squares first.

if each square is one square foot then 18 whole squares will be 18×1= 18 square feet

add halves (aproximate halves) together. (3 in total)

Therefore A= 18 +3

= 21 square feet

3 0
2 years ago
Read 2 more answers
Could you help me to solve the problem below the cost for producing x items is 50x+300 and the revenue for selling x items is 90
s344n2d4d5 [400]

Answer:

Profit function: P(x) = -0.5x^2 + 40x - 300

profit of $50: x = 10 and x = 70

NOT possible to make a profit of $2,500, because maximum profit is $500

Step-by-step explanation:

(Assuming the correct revenue function is 90x−0.5x^2)

The cost function is given by:

C(x) = 50x + 300

And the revenue function is given by:

R(x) = 90x - 0.5x^2

The profit function is given by the revenue minus the cost, so we have:

P(x) = R(x) - C(x)

P(x) = 90x - 0.5x^2 - 50x - 300

P(x) = -0.5x^2 + 40x - 300

To find the points where the profit is $50, we use P(x) = 50 and then find the values of x:

50 = -0.5x^2 + 40x - 300

-0.5x^2 + 40x - 350 = 0

x^2 - 80x + 700 = 0

Using Bhaskara's formula, we have:

\Delta = b^2 - 4ac = (-80)^2 - 4*700 = 3600

x_1 = (-b + \sqrt{\Delta})/2a = (80 + 60)/2 = 70

x_2 = (-b - \sqrt{\Delta})/2a = (80 - 60)/2 = 10

So the values of x that give a profit of $50 are x = 10 and x = 70

To find if it's possible to make a profit of $2,500, we need to find the maximum profit, that is, the maximum of the function P(x).

The maximum value of P(x) is in the vertex. The x-coordinate of the vertex is given by:

x_v = -b/2a = 80/2 = 40

Using this value of x, we can find the maximum profit:

P(40) = -0.5(40)^2 + 40*40 - 300 = $500

The maximum profit is $500, so it is NOT possible to make a profit of $2,500.

3 0
3 years ago
Math problems solve
Stolb23 [73]
Number???what do you want?
6 0
3 years ago
How does knowing the double 6+6=12 help solve the near double 6+7=13?
Yakvenalex [24]

Because, if 6 + 6 = 12, then in 6 + 7, 7 can be splitted into 6 + 6 + 1, and so you find it easier...!!

7 0
3 years ago
Other questions:
  • What is the common ration between successive term in the sequance? 2,-4,8,-16,32,-64
    12·1 answer
  • X2 + 20 = 40 .... What is X​
    9·2 answers
  • Write the expression as either the sine, cosine, or tangent of a single angle.
    14·2 answers
  • Kimmy has 47 ft.² of cement blocks each square block has size 1 foot long what is the greatest perimeter of a rectangle that she
    12·1 answer
  • Parker and his family are going on a trip to see Mount Rushmore. They will travel 55 miles per
    8·1 answer
  • What is 30% of 180 show work
    6·1 answer
  • Select the equations with a coefficient of 6.
    12·1 answer
  • Can someone help me please
    7·1 answer
  • The lawn is a circle with radius 3m.<br> Work out the area of the lawn.
    11·1 answer
  • ?????? I don’t get it
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!