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
KatRina [158]
3 years ago
6

Solve each system of equations 2x- 5y = 7 3x - y = -9

Mathematics
1 answer:
Darina [25.2K]3 years ago
8 0

Answer:

x = -4; y = -3

Step-by-step explanation:

2x - 5y = 7

3x - y = -9

Rewrite top equation. Multiply both sides of bottom equation by -5. Add equations. This eliminates y, and we solve for x.

         2x - 5y = 7

(+)   -15x + 5y = 45

----------------------------

      -13x         = 52

Divide both sides by -13.

x = -4

Substitute -4 for x in the first original equation and solve for y.

2x - 5y = 7

2(-4) - 5y = 7

-8 - 5y = 7

-5y = 15

y = -3

Answer: x = -4; y = -3

-5 =

You might be interested in
2/3 as a real number
BaLLatris [955]

Answer:

Yes

Step-by-step explanation:

I don't know the question but 2/3 is a real number.

8 0
3 years ago
Must include explanation !!
stich3 [128]

Answer:

18.2 feet^3 of water

Step-by-step explanation:

First let's find 80% of the full capacity, which is 24. To do that, multiply 24 x 0.8, which is 19.2.

Now how much space to the fish take up? There are 8 fish, and each one takes up 1.5 cubic INCHES. 8 x 1.5 = 12 cubic inches, but we need cubic feet. Luckily, there are 12 inches in 1 foot so it'll be a clean and simple 1 foot. The "cubic" part only shows that we're measuring volume.

The 80% capacity - fish capacity = how much water is needed. That will be 19.2 - 1 = 18.2

That's it! Hopefully this helped!

7 0
3 years ago
????????? Help pls & thanks
mina [271]
Top left is the right answer hope this helps <3
7 0
3 years ago
1 feet = _____ inches A.2 inches B.12 inches C.1.2 inches D.1 inch​
Advocard [28]

Answer:

its B!!!!!!

Step-by-step explanation:

have great day

7 0
3 years ago
Read 2 more answers
How do I add 5 and to together to get an answer
jek_recluse [69]
? You do 5+2= 7
Is that what you are asking
7 0
3 years ago
Read 2 more answers
Other questions:
  • one month, jerry worked 3 hours less than ben, and chris worked 4 more hours than ben. together they worked 196 hours. find the
    7·1 answer
  • An 85-foot rope from the top of a tree house to the ground forms a 45 degree angle of elevation from the ground. How high is the
    11·1 answer
  • I need help please no one helps me :((
    11·1 answer
  • Jaylin's test grades in History class are: 92, 89, 85, 89, and 90. The semester final will count as IWULUI.
    8·1 answer
  • What is the solution to the inequality below x/9+3&lt;4
    11·2 answers
  • Pls answer this correctly and I will mark it has brainlist
    13·2 answers
  • Which expression is equivalent to (01.05 LC) 3 to the 2 power 3 to the -5 power
    15·1 answer
  • Will i pass eighth grade with a d in math. give me a genuine answer too. not just to get points.
    15·2 answers
  • HURRY ONLY HAVE 1 MIN!!!!!!!!!!!!!!!!
    9·1 answer
  • F(x) = x/2 - 3 and g(x) = 3x² + x − 6, find (f+ g)(x)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!