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
Furkat [3]
3 years ago
6

Find the solution of the system of equations. 8x-3y=2 -8x-5y=46

Mathematics
2 answers:
ivolga24 [154]3 years ago
7 0

Answer:

  (x, y) = (-2, -6)

Step-by-step explanation:

The coefficients of x are opposites, so the variable x can be eliminated by adding the equations together:

  (8x -3y) +(-8x -5y) = (2) +(48)

  -8y = 48 . . . . . simplify

  y = -6 . . . . . . . divide by -8

Use this value in either equation to find x.

  8x -3(-6) = 2

  8x = -16 . . . . . . subtract 18

  x = -2 . . . . . . .  divide by 8

The solution to the system of equations is (x, y) = (-2, -6).

_____

I like a graphing calculator for verifying results.

Bingel [31]3 years ago
4 0

Answer:

use elimination

8x-3y=2

-8x-5y=46

8x cancel out

-5y-3y= -8y= 48

48/-8= -6y

Step-by-step explanation:

ANSWER= -6y

You might be interested in
What is the approximate volume of a cylinder with a diameter of 12 meters and a height of 7 meters? Use 3.14 for pi.
storchak [24]
The mathematical equation for volume of a cylinder is pi times radius Squared Times height

The radius squared is 36

So 3.14 x 36 =113.04
Then you multiply 113.04 x 7 = 719.28.
Round that number and you get to 791.3.

So the answer is c
8 0
3 years ago
6r + 7 = 13 + 7r what is r
kumpel [21]

Answer:

6r+7=13+7r

6r+7=7r+13

6r+7−7r=7r+13−7r

−r+7=13

−r+7−7=13−7

−r=6

\frac{-r}{-1} = \frac{6}{-1}

r=−6

Step-by-step explanation:

:) This is the answer

6 0
3 years ago
Read 2 more answers
Given: F(x) = 2x - 1; G(x) = 3x + 2; H(x) = x 2 Find F[G(x)] - F(x). 4x + 4 4x + 2 4x
Allushta [10]

Answer:

4x + 4

Step-by-step explanation:

F(x) = 2x - 1

G(x) = 3x + 2

H(x) = x²

We have to calculate the expression F(G(x)) - F(x)

F(G(x)) means the composition of functions F(x) and G(x). In order to find F(G(x)) we have to replace ever occurrence of x in F(x) with the value of G(x). So,

F(G(x)) = 2(3x+2) - 1 = 6x + 4 - 1 = 6x + 3

Thus,

F(G(x)) - F(x) = 6x + 3 - (2x - 1)

= 6x + 3 -2x + 1

= 4x + 4

Therefore, the expression F(G(x)) - F(x) equals 4x + 4

4 0
3 years ago
What is the equation of the line that passes through (4, -1)
Mekhanik [1.2K]

Answer:

Step-by-step explanation:

answer: y = -5 + 19

We can use the point-slope formula to find an equation to solve this problem. The point-slope formula states: (y−y1)=m(x−x1)

Where m is the slope and (x1y1) is a point the line passes through.

Susbtituting the slope and values from the point from the problem gives:

(y−−1)=−5(x−4)

(y+1)=−5(x−4)

We can also solve this for the slope-intercept form. The slope-intercept form of a linear equation is: y=mx+b

Where m is the slope and b is the y-intercept value.

Substitute the slope from the problem for m and the values of the point from the problem for x and y and solve for b:

−1=(−5⋅4)+b

−1=−20+b

20−1=20−20+b

19=0+b

19=b

We can substitute for m and b in the formula to find the equation:

y=−5x+19

6 0
2 years ago
Read 2 more answers
Subtract: (3x^2 − 8x + 3) − (−5x^2 + 4x − 5)
koban [17]

Answer:

A

Step-by-step explanation:

Add 3x^2 and 5x^2 now it = 8x^2

Add -8x and -4x = -12x

look at your answer choices the only one that has 8x^2-12x is A

6 0
3 years ago
Read 2 more answers
Other questions:
  • Alta Vista Company plans to sell 90,000 units in June and 135,000 units in July. The company’s policy is to keep 15% of the next
    14·1 answer
  • it cost $6 to join an online DVD club and $2.50 to rent each DVD. write an equation for the relationship that shows the total co
    12·2 answers
  • HELP !!excuse my messy writing
    10·1 answer
  • What is the slope of the line passing through the points (1,57) and (2,27)?
    10·2 answers
  • Which equation has infinitely many solutions?
    13·1 answer
  • Molly is baking for the moms and muffins event at her school. She will bake 4 batches of banana muffins. She needs 1 3/4 cups of
    12·2 answers
  • Hellpppp D:<br><br> Solve for x in the triangle. Round your answer to the nearest tenth
    6·1 answer
  • Which expression has a value of 6?
    11·2 answers
  • Anna is ordering t-shirts for a community run. The company Anna is ordering from charges $12 per shirt and a shipping fee of $8.
    8·1 answer
  • If 60% of the students in your class like Burger King, how many students are in your class if 15 students like Burger King?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!