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
elena-s [515]
3 years ago
10

John is 5 years older than Mary. In 10 years, twice John's age decreased by Mary's age is 35, and John's age will be twice Mary'

s current age. Find their ages now. If x is Mary's age now and y is John's age now, which system of equations could not be used to solve the problem?
1. y = x + 5 and y + 10 = 2x
2. y = x + 5 and 2(y + 10)-(x + 10) = 35
3. y = x + 5 and 2(y + 10) = x
Mathematics
2 answers:
Serjik [45]3 years ago
6 0
J=m+5, 2(j+10)-(m+10)=35 

So number 2. is the correct answer...

Use the value of j=m+5 in the second equation to get:

2(m+5+10)-m-10=35

2m+30-m-10=35

m+20=35

m=15, and j=m+5=20

So Mary is currently 15 years old and John is 20 years old.


Nana76 [90]3 years ago
4 0

Answer:

Option 2 is correct that could be used to solve the problem.

Step-by-step explanation:

Present age of Mary is x

And present age of John is y  

Since, john is 5 years older than Mary hence, we get

y=x+5

In 10 years twice john's age is decreased by Mary's age by 35

2(y+10)-(x+10)=35

hence, Option 2 is correct which could be use to solve the problem.

You might be interested in
A cookie factory uses 1/3 of a bag of flour in each batch of cookies. The factory used 2/3 of a bag of flour yesterday. How many
Mumz [18]

Answer:

They made 2 batches

Step-by-step explanation:

If the factory used ⅔, and 1 batch is ⅓, the factory made 1 batch for each 3rd they used. ⅔, 2 batches

7 0
3 years ago
Can someone please help
vredina [299]
Correct answer is A

Would appreciate brainliest answer :)
4 0
2 years ago
I really need help please help me out!
creativ13 [48]
I should say b or c
7 0
3 years ago
Solve for x round to the nearest tenth if necessary
mash [69]

tan 39 = x /30

0.809 = x/30

x = 24.29

x = 24.3

7 0
2 years ago
Solve the equation. <br> 4 (6 – x) + 4 = 2 (3x + 1) - 6
PtichkaEL [24]

Answer:

x = 2.4

Step-by-step explanation:

Simplify.

24 - 4x + 4 = 6x + 2 - 6

Combine like terms (24 + 4 = 28, sorry for the confusion!)

28 - 4x = 6x - 4

Add x and add 4 to both sides.

10x = 32

x = 3.2

4 0
2 years ago
Read 2 more answers
Other questions:
  • Matty jogs 1 km in 5 minutes. Compute Matty's speed in m/s.
    6·1 answer
  • Mr.lobo is building a fence around his rectangular yard.It is 16 feet long and 14 feet wide.how many feet of fencing will he nee
    10·1 answer
  • The circumference of a circle is divided into twelve equal arcs. The measure of each arc is degrees.
    13·2 answers
  • Which of the following is the surface area of the right cylinder below?
    15·2 answers
  • Please help asap 20 pts
    13·2 answers
  • Solve for x: −2(x − 2)2 + 5 = 0
    14·2 answers
  • Find the equation of the straight line passing through the points (2,-4) and (1,0)
    14·1 answer
  • 30. What is the degree of the polynomial?
    10·1 answer
  • A roundabout of a radius 7 yd laid with a carpet grass. find the area of the roundabout laid with carpet grass
    7·1 answer
  • What rule describes the translation that was applied to triangle JKM to create triangle J’K’M’, Initial directions with the pic
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!