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
lys-0071 [83]
4 years ago
7

3x+1/5y=7solve for y

Mathematics
1 answer:
kondaur [170]4 years ago
5 0
<span>The answer is y = -15x + 35.

Explanation:
We want to isolate y, so we cancel everything on that side of the equals except y. We begin with the term farthest away from y, which would be 3x. Since it is positive, to cancel it we will subtract. This will give us 1/5y = 7-3x.

Next we want to cancel the 1/5. Since it is directly beside y, this means it has been multiplied; to cancel, we will divide. Divide both sides by 1/5, and we have y = (7-3x)</span>÷<span>(1/5). When we divide fractions, we flip the second one and multiply; this means we have y=(7-3x)*5.

Using the distributive property, we have y=7*5-3x*5, which gives us y=35-15x. We can write this as y=-15x+35.</span>
You might be interested in
Which statement is true regarding the two shaded sectors of circle O? Explain.
ZanzabumX [31]

Answer: C

Step-by-step explanation:

Just did it

6 0
3 years ago
Read 2 more answers
Mr. Joseph bought 9 pounds of fertilizer for his lawn. He uses 2 2/3 pounds for his backyard and 1 2/9 for his front yard. How m
arlik [135]
2 2/3 + 1 2/9 = 3.7 9 - 3.7 = 5.3 so the answer would be 5.3 pounds of fertilizer left. Hope this helps!
6 0
3 years ago
PLEASE HELP! GIVING BRAINLIEST!
liq [111]

Answer:

  • 18 in

Step-by-step explanation:

The area = 252 in²

One side = 14 in

The other side = x

The area of a rectangle is a product of 2 sides

  • 14x = 252
  • x = 252/14
  • x = 18 in
4 0
3 years ago
Read 2 more answers
Solving Linear Systems of Equations: Addition (Elimination Method)
Sauron [17]
4. 6x + 5y = 4  a
    6x-7y = -20  b

a-b  
6x + 5y -6x+ 7y = 4+20
12y = 24 
y = 2

Sub y in a 
6x + 10 = 4
6x = 4-10
x = -6/6 = -1

5. 2x-3y=12  a
    4x+ 3y = 24   b

b+a

4x+3y+2x-3y =36
6x=36
x=6

Sub x in a 
12-3y = 12
-3y=12-12
y= 0/3 = 0

3 0
3 years ago
If a discount of 20% off the retail price of a desk saves mark$45 how much did he pay for the desk?
lianna [129]

Answer:

$180

Step-by-step explanation:

what is 45 20% of? This is what we need to find! To do this we have to take 45 and divide it by .2 which will give us 225. To check that this is the answer we take 45 and divide it by 225. This brings us back to 20%. He wouldve paid $225 for the desk, but there was a $45 discount, and after subtracting the discount we are left with $180

8 0
3 years ago
Read 2 more answers
Other questions:
  • Ravi purchased n notebooks. They were 5 dollars each. Write an equation to represent the total cost c that Ravi paid
    9·1 answer
  • Please help me I’ll give you brainliest!!
    8·1 answer
  • Solve each inequality <br> 12x - 7 &lt;17
    14·2 answers
  • Describe the graph of the function at its roots.
    10·1 answer
  • What is the greatest common factor of the expression 12x^+18x^2
    10·2 answers
  • Which is expression. Is equivalent to 6-(-8)
    6·2 answers
  • I need help with this homework can anyone help me. I need work too, help is appreciated:)
    5·2 answers
  • 10% of ? is 20 I really need help bad
    10·2 answers
  • PLS HELLP ILL GIVE 50 POINTS 42 − 3 &gt; 7
    11·2 answers
  • 9) What is the area of a square with a side length of 120 cm?​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!