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
Oksanka [162]
3 years ago
15

Solve by elimination 5x-15y=10 3x-5y=-6

Mathematics
1 answer:
Dovator [93]3 years ago
6 0
Multiply bottom equation by -3 to add and eliminate y’s.

So...

5x-15y=10
+-9x+15y=18

You get -4x=28 so x=-7

Plug in to get y
5(-7)-15y=10
-35-15y=10
-15y=45
So y=-3

Check in other equation
3(-7)-5(-3)=
-21+15=-6

So x= -7 and y= -3
You might be interested in
Answer fast again important
gtnhenbr [62]

Answer: 17 square inches.

Step-by-step explanation: Area of a triangle is 1/2 x b x h. We can just take the area of half of the whole triangle, and double it. In this case, half of the triangle has an area of 1/2 x 3.4 x 5 = 8.5. Doubling it is the same is doing 8.5 x 2, which equals 17.

5 0
2 years ago
A number a decreased by 7 is 2.
umka21 [38]

Answer:

9

Step-by-step explanation:

Let's first convert this to numbers. When a number is decreased by a certain amount, that is the same as saying that something is subtracted from it. Therefore:

a-7=2

Add 7 to both sides:

a-7+7=2+7

a=9

Hope this helps!

7 0
3 years ago
Read 2 more answers
The following data points are the number of games pitched by each of the Greenbury Goblins' starting pitchers last season.
Leviafan [203]

Answer: 1.87 games

Step-by-step explanation:

step 1 ; x= 3+2+4+7 divide 4 = 16/4 = 4 games

5 0
3 years ago
What value of x makes the equation true? <br> A.1<br> B.-5<br> C.-1<br> D.7
Temka [501]

I THINK THE ANSWER IS D.

5 0
3 years ago
Write 9020000 in standard form?
dolphi86 [110]

Answer:

9.02 x 10^6

Step-by-step explanation:

hope this helps!

8 0
3 years ago
Other questions:
  • Can u help me with no 38
    7·2 answers
  • Which of the economic goals correlates with the explanation "the ability of people to make choices"?
    7·1 answer
  • Find two fractions with a sum of 2/3 but with neither denominator equal to 3
    9·1 answer
  • Please answer it will mark brilliantnest​
    14·1 answer
  • How many times greater is one minute than one second
    10·2 answers
  • What’s the inverse of the equation
    14·1 answer
  • Rewrite the product as a power:
    13·1 answer
  • 1) An airplane is at 10,000 feet above the ground. It needs to fly higher to reach the regular flying height. It increases its h
    8·2 answers
  • Lexi said that two lines
    14·1 answer
  • What is the correct formula to use for the following problem:
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!