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
Studentka2010 [4]
3 years ago
8

Solve for y 2x + y = 7 6x + 9 = 9y - 2x

Mathematics
2 answers:
irga5000 [103]3 years ago
5 0

Answer:


Step-by-step explanation:

what grade are u in?


NeX [460]3 years ago
4 0
This is a simultaneous equation
1)2x+y=7
2)-8x+9y=9

1)*4 (so 2x becomes 8x so we can add or take to get rid of x)

1)8x+4y=28
2)-8x+9y=9

2) + 1)

13y=37

Y=2.846153846


To check the answer is correct find x

8x+(4*2.84...)=28
8x=28-11.384..
8x=16.615..
X=2.0769..


Input into 2)

(-8*2.07..)+(9*2.84..)=9
It is equal to 9
So y is correct



You might be interested in
15 POINTs_ NEED ASAP!
sleet_krkn [62]

Answer:

Step-by-step explanation:

1 TRUE

A number is always 100%  Anyting bigger than 100% is going to be a bigger number

  Anything smaller than 100% is a smaller number

2FALSE   5/100 = 0.05 and NOT 0.5

0.5% is the same as thalf of 100%    = 50%

   50/100  = 5/10  = 0.5

6 0
3 years ago
Last Tasha a 90 fries in 18 minutes find her fry eating right and fries per minute
ollegr [7]

Answer:

5

Step-by-step explanation:

90 fries in 18 minutes. You would divide 90 by 18 to get the answer of 5 fries per minute.

6 0
3 years ago
7/10 write the fraction of the sum of fractions three different ways
mote1985 [20]
14/20 21/30 28/40 are the equivalent fractions
3 0
3 years ago
Read 2 more answers
Imagine two lines intersect. How can the properties of linear pairs and vertical angles help to determine the angle measures cre
Vikentia [17]

Answer:When two lines intersect they form two pairs of opposite angles, A + C and B + D. Another word for opposite angles are vertical angles. Vertical angles are always congruent, which means that they are equal. Adjacent angles are angles that come out of the same vertex.

here you go

5 0
2 years ago
Read 2 more answers
Can anyone help me with 2 and 3 (different one)
Aloiza [94]
Fraction would be 30/100 and decinal would be .30 and ratio would be 30/100
5 0
3 years ago
Read 2 more answers
Other questions:
  • The drama department at Cedarburg High School had 24 students try out for the musical this spring, which is 20% fewer than tried
    11·1 answer
  • The Wheel Of A Bicycle Has A Diameter of 28. How far will ot travel after one rotation? Round to the nearest Inch
    8·2 answers
  • An item cost $500 before tax,and the sales tax is $45 ..find the sales tax rate write in percentage
    7·1 answer
  • A chair’s regular price is $349. It is on clearance for 30% off, and a customer uses a
    13·2 answers
  • 6. Which of the following inequalities is true? (1 point)
    12·1 answer
  • At a rodeo full with cowboys and horses someone counted 26 legs and 9 heads how many cowboys and horses were at the rodeo
    8·1 answer
  • Which graph represents the equation y−3.6=1.6(x−1)?<br> show work, please!
    13·2 answers
  • In order to graph a line from an equation that is written in slope intercept form, what do you plot first, then next.
    6·1 answer
  • Can someone please answer
    9·2 answers
  • Tequalities: Tutorial
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!