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
Arada [10]
2 years ago
5

Jane is 7 years older than John.If the sum of their ages is 43.How old is Jane and how old is John​

Mathematics
1 answer:
Greeley [361]2 years ago
5 0

Answer:

If

Jane= x

John = y

y+7= x

x-y=7 ---- (1)

x+y=43 --- (2)

(1) + (2),

x-y+x+y=7+43

2x=50

x= 50÷2

x= 25

substituting x= 25 in (2),

25+y=43

y= 43-25

y= 18

Jane is 25 years old and John is 18 years old.

Step-by-step explanation:

You might be interested in
PLZ HELP: the answer to 5(x-1) the answer to this cannot be found online. THIS IS SIMPLE MATH I'M STILL CONFUSED SO PLZ EXPLAIN
777dan777 [17]
That would be 5x-5 because the number inside is multiplied by the numbers inside due to the brackets. Hope u understand my explanation.
4 0
3 years ago
Please help quick I'll give 5 stars and brainliest answer
nasty-shy [4]
(0, 3) so b = 3 and slope = -5/4
equation
y = -5/4x + 3

answer
B. y = -5/4x + 3
8 0
4 years ago
Please help with this!
egoroff_w [7]

Answer:

u gotta divide the 7.5% and the other number that is says (can see the question but there)

8 0
3 years ago
Me ayudan con esa ecuacion por sustitucion con la comprobacion pliss
attashe74 [19]
<span>1/2x+3y/4=5 => (1/2)x + (3/4)y = 5

1/5x+3y/2=2  => (1/5)x + (3/2)y = 2

Eliminate the fractional coefficients:  Mult. the first equation by 4 and mult. the second equation by 10:


2x + 15y = 20     

</span><span>Multiply the 1st equation by -1:

-</span>2x - 3y = -20
2x + 15y = 20 
-------------------
       12y = 0, so y = 0.  Then the first equation becomes  2x + 3(0) = 20, or
                                     x=10.

Solution is (10,0).
8 0
3 years ago
76 POINTS IF YOU CAN ANSWER THIS!!!The amount of water an electric dishwasher uses to wash dishes varies directly with the numbe
Vladimir79 [104]

Answer:

80

Step-by-step explanation:

Since you need 10 loads you know that for 4 loads you use 32 gallons. And to go from 4 to 10 you divide 10 and 4 to get an answer of 2.5. So all you have to do is multiple 32 gallons by 2.5 to then get an answer of 80.

5 0
4 years ago
Read 2 more answers
Other questions:
  • Geometry
    9·1 answer
  • If you deposit $10,000 in a bank account that pays 10% interest annually, how much will be in your account after 5 years?
    13·1 answer
  • Help me please asap!!!!1
    11·2 answers
  • Solve the equation: 5y+2=22 Please help me!! :(
    11·2 answers
  • What transformation was performed on the figure
    9·2 answers
  • If 2ft 9 in of material is used to manufacture one scarf, how much material is needed for 6 scarves?
    15·2 answers
  • if spongbob has 34 ponds of secret formula how mean krabby patties can he make if it takes 1 1/2 to make on 30 pts
    5·2 answers
  • You and your friend are swim team. You want to beat your friend at the next swim meet so you decide to swim 15 minutes longer th
    11·2 answers
  • Bored anyone wanna talk? or do a zo om?​
    13·2 answers
  • The second power of (8---3)?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!