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
Diano4ka-milaya [45]
3 years ago
8

How many solutions are there to the following system of equations?

Mathematics
2 answers:
pishuonlain [190]3 years ago
7 0
When we add the equations together, we need up with x=-7

substitute this and we get -28-8y=0 so y =-3.5

I think this is right.

we can also see the if we divide both of the answers by 3.5, x=-2 and y=-1. We can also remove the negatives of both and that will still work.

There's 3 right there for you. there may be more.
Nutka1998 [239]3 years ago
7 0
We can add the equations and cancel out the y terms
4x-8y=0
<u>-3x+8y=-7 +</u>
1x+0y=-7


x=-7
duh

sub back to find the x term
4x-8y=0
4(-7)-8y=0
-28-8y=0
add 8y both sides
-28=8y
divide by 8
-7/2=y

one solution, (-7,-7/2)
You might be interested in
{Thanks for answering my questions!} #thanks
Zepler [3.9K]
6=24a so you have to leave the a on one side of the equation. so you divide the 24 on both sides so the a could be by itself and divide 6 by 24. the answer is a=0.25
7 0
3 years ago
Read 2 more answers
4^3/2 Rewrite in radical form and then simplify
german

Answer:

8

Step-by-step explanation:

radical form conversion uses the equation: \alpha ^\frac{z}{n} =  `^n\sqrt{a^x}

Use the rule to convert 4^3/2 to a radical, where a = 4,  x = 3, and n = 2

\sqrt{4^3}

simplified, your answer is 8

hope this helps:)

4 0
2 years ago
Read 2 more answers
PLEASE HELP CORRECT ANSWERS ONLY!!
mariarad [96]

Answer:

Associative Property of Reciprocals

5 0
3 years ago
At a concert the ratio of adults to children is 4:5. There are 720 children in a concert how many adults are there?
zepelin [54]

Answer:

576 adults

Step-by-step explanation:

The 5 part of the ratio relates to 720 children, then

720 ÷ 5 = 144 ← value of 1 part of the ratio , then

4 parts = 4 × 144 = 576 ← number of adults

7 0
3 years ago
Read 2 more answers
Solve: Tan20. Tan 40. Tan 80<br><br>plaease help me.....​
earnstyle [38]

Answer: you need more information to solve

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • The robots will take over 1/3 of the number work. You hire four robots. how much of the total work will each be doing
    6·1 answer
  • How to find missing side of the triangle
    7·2 answers
  • Now suppose the roster has 3 guards, 5 forwards, 3 centers, and 2 "swing players" (x and y) who can play either guard or forward
    14·1 answer
  • there are two numbers that are 3 times as far from 19 as they are from 11. the sum of the two numbers is?
    5·1 answer
  • A number cube with the numbers 1, 2, 3, 4, 5, and 6 is rolled 24 times.
    8·1 answer
  • Find the slope of the line passing through the points (6, -6) and (4, -4)
    10·1 answer
  • What is 25% of 84. <br> Help ASAP
    12·2 answers
  • In parallelogram ABCD, what is DC?
    9·2 answers
  • What does "solve an equation" mean?
    11·1 answer
  • If sally invests $400 into the Bank of Reyonds that offers her a 6% interest, compounded monthly, how much money will she have i
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!