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
ohaa [14]
3 years ago
15

Can i get some help with these LCD equations please.

Mathematics
1 answer:
Andre45 [30]3 years ago
3 0

Answer:

  y = -1/4

Step-by-step explanation:

  y/5 +3/10 = (y+2)/7

The LCD is 10·7 = 70. Multiplying the equation by 70 gives ...

  14y +21 = 10(y +2)

  14y +21 = 10y +20 . . . . eliminate parentheses

  4y + 21 = 20 . . . . subtract 10y

  4y = -1 . . . . . . . . . subtract 21

  y = -1/4 . . . . . . . . .divide by 4

_____

<em>Check</em>

  (-1/4)/5 +3/10 = (-1/4 +2)/7 . . . . . substitute for y

  -1/20 +6/20 = (7/4)/7 . . . simplify a bit, rewrite 3/10

  5/20 = 1/4 . . . . . . . . . . true

You might be interested in
PLEASE HELP! I have a picture of the question below :)
Charra [1.4K]

3. ∠1+∠2=180° and ∠2+∠3=180°

4. they are supplementary

5. ∠1+∠2=180°=∠2+∠3

6. ∠1+∠2=180°=∠2+∠3

∠2 are same in both side so ∠1=180°-∠2 =∠3=180°-∠2

7.

6 0
3 years ago
This week, Michael collected $468 for delivering newspapers. He had 40 repeat customers and 18 new ones. As an incentive, he cha
loris [4]
468=40x+18(x-3)
468=40x+18x-54
468=58x-54
522=58x
9=x
I'm not sure if you need to know x at all, if not, the top equation is all you need.
7 0
3 years ago
Read 2 more answers
HELP HELLP HELP MEH I NEED 16 MORE CLASSES LEFT FOR SCHOOL LET IT BECOME 15 PLEASE
vodomira [7]

Answer:

2*2*9+4*12*3=36+144=180

Step-by-step explanation:

8 0
3 years ago
7c-11=17 what does c equal. Plz show work. Thanks :D
Gnom [1K]
Since you are subtracting 11 on the side with the variable, you have to add it on the other side. 17+11=28. Then, to solve the problem you are left with, 7c=28. You are multiplying on the side of the variable, so you divide 28 by 7. Your answer to the problem is C=4 i hope this helps
4 0
3 years ago
What is -3.5 as a fraction
Alex_Xolod [135]
-7/2 (seven halves) .
5 0
4 years ago
Other questions:
  • If you want to know the strength of an earthquake to a _____ ?
    13·1 answer
  • A study conducted on 40,000 words in the English language found that about 6,670 words started with the letter T, which is the m
    9·2 answers
  • Find the missing angle measure in ΔQRS.
    7·1 answer
  • Which of the statements below are true? Select all that apply.
    10·1 answer
  • Would someone Please answer this question please will be thanked and also will pick brainly!! (please be honest)
    11·2 answers
  • I need help with 12 and 13 please.
    11·1 answer
  • 23% put into a fraction
    10·2 answers
  • Can anyone help me out with this math problem?
    9·1 answer
  • Help ASAP PLEASE! I'll mark brainliest
    12·2 answers
  • What number would you use to complete the table so that it is a function?Fill in the red question mark
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!