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
vesna_86 [32]
3 years ago
6

Solve using elimination. -9x + 2y = 5 9x − 4y = -19

Mathematics
2 answers:
Vitek1552 [10]3 years ago
7 0
-9 + 2y = 5
9x - 4y = -19

Add these equations to eliminate x:
-2y = -14

Then solve -2y = -14 for y:
-2y = -14
-2 -2
(Divide both sides by -2)

y=7

Substitute 7 for y in -9x + 2y = 5:
-9x + (2)(7) = 5
-9x + 14 = 5
-14 -14
(Subtract 14 from both sides)
-9x = -9
-9 -9
(Divide both sides by -9)
x = 1

(1,7)
Mark me Brainlest pls
almond37 [142]3 years ago
6 0

hi hruStep-by-step explanation:

You might be interested in
Based on the data, which table shows a constant of proportionality of 3 for the ratio of amps to guitars
Dafna1 [17]

Answer:

table d

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Consider the expressions 3x(x − 2) + 2 and 2x2 + 3x − 18.
Rzqust [24]

Answer:

See answer below

Step-by-step explanation:

For the first expression

3 x (x - 2) + 2 = 3 x^2 - 6 x + 2

evaluated at x= 4 we get: 26

and for x = 5 we get 47.

For the second expression

2 x^2 + 3 x - 18

we get the exact same values when doing the evaluation at these two points.

Based on those results, one may think the expressions may be equivalent, but they are not equivalent. Because at any other x-value, their results are different. See for example that for x = 0 the first one gives "2" while the second one gives -18.

4 0
2 years ago
I need to find the absolute mean of this?
Slav-nsk [51]
Give more detail please this makes zero sense
4 0
3 years ago
X + 8y = 18 and — 5x + 3y = -4
atroni [7]
X+8y=18
-5x+3y=-4

Multiply the first equation by 5
Add the two equations together

5x+40y=90
-5x+3y=-4
43y=86
Y=2

Plug y into one equation to find x
X+16=18
X=2
5 0
3 years ago
Read 2 more answers
Point a,b and are collinear and b bet a,c if ab=48,ab=2x +2,and bc=3x+6 what is bc?​
koban [17]
8 bra cause that’s the answer I got for sure
6 0
3 years ago
Other questions:
  • In June, a runner ran a mile in 7:45. In September, the runner ran a mile in 5:51. Is the percent of change in time an increase
    10·1 answer
  • (-5)(-5)(-5)(-5)(-5)(-5)(-5)(6)(6)(6)
    5·2 answers
  • What is the expanded form for 11,760,825
    8·1 answer
  • Point K is the midpoint of JL. If JK=7x+4 and KL=12x−21, what is the length of JL?
    11·1 answer
  • Which graph represents a line with a slope of and a y-intercept equal to that of the line y = x – 2?
    13·2 answers
  • 6/b-1=9/7 solve the proportion
    13·2 answers
  • Rectangle floor measures 10 1/8 by 13 3/4 feet. If Mary buys 150 ft.² of carpet, will she have enough carpet to cover the floor?
    14·1 answer
  • Due today helpppppppppp
    13·2 answers
  • 3. Marcus records the total number of calories burned after each meal he
    8·1 answer
  • Quadrilateral OPQR is inscribed in circle N, as shown below. Which of the following could be used to calculate the measure of ∠O
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!