answer.
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
NeTakaya
2 years ago
12

What equation can pair with x +2y=5 to create an inconsistent system a. 2x+4y=3 b.5x+2y=3 c.6x+12y=30 d.3x+4y=8

Mathematics
2 answers:
Aneli [31]2 years ago
4 0

Answer: A

Hope this is helpful.

Step-by-step explanation:

Try to solve using simultaneous equations with each answer given.  

x + 2y = 5  

x = 5 - 2y  

Plug this into each equation  

A 2(5 - 2y) + 4y = 3  

10 - 4y + 4y = 3  

10 = 3 in consistent  

B 5(5 - 2y) + 2y = 3  

25 - 10 y + 2y = 3  

25 - 8y = 3  

8y = 22  

y = 2.75  

Using original equation solve for x  

5x + 2(2.75) = 3  

5x + 5.5 = 3  

5x = -2.5  

x = -0.5  

Using original equation,  

(-0.5) + 2 (2.75) = 5  

-0.5 + 5.5 = 5 consistent  

C 6x + 12y = 30  

6(5 - 2y) + 12y = 30  

30 - 12y + 12 y = 30 consistent for every value of y  

D 3(5 - 2y) + 4y = 8  

15 - 6y + 4y = 8  

- 2y = -7  

y = 3.5  

x = 5 - 2y  

x = 5 - 7  

x = -2  

Solving for x  

3(-2) + 4(3.5) = -6 + 14 = 8 consistent  

So A is the correct answer

Art [367]2 years ago
3 0

Answer:

a

Step-by-step explanation:

You might be interested in
The accompanying data are lengths (inches) of bears. Find the percentile corresponding to 65.5 in.
Jlenok [28]

Complete question is missing, so i have attached it.

Answer:

Percentile is 74th percentile

Step-by-step explanation:

All the lengths given are;

Bear Lengths 36.5 37.5 39.5 40.5 41.5 42.5 43.0 46.0 46.5 46.5 48.5 48.5 48.5 49.5 51.5 52.5 53.0 53.0 54.5 56.8 57.5 58.5 58.5 58.5 59.0 60.5 60.5 61.0 61.0 61.5 62.0 62.5 63.5 63.5 63.5 64.0 64.0 64.5 64.5 65.5 66.5 67.0 67.5 69.0 69.5 70.5 72.0 72.5 72.5 72.5 72.5 73.0 76.0 77.5

The number of lengths (inches) of bears given are 54 in number.

We are looking for the percentile corresponding to 65.5 in.

Looking at the lengths given, since they are already arranged from smallest to highest, let's locate the position of 65.5 in.

The position of 65.5 in is the 40th among 54 lengths given.

If the percentile is P, then;

P% x 54 = 40

P = (40 × 100)/54

P ≈ 74

3 0
2 years ago
Huong had $23 to spend on six notebooks. After buying them she had $11. How much did each notebook cost?
Nataly [62]
23-11=12
She spent $12 on notebooks, and she bought six notebooks.
12/6=2

Each notebook costed $2.
8 0
2 years ago
Read 2 more answers
"From 1990 to 2000 The population of city A rose from 12,000 to 28,000 and the population of city B rose from 18,000 to 24,000.
Virty [35]

Answer:

The year 1996

With population of both 21600

Step-by-step explanation:

From 1990 to 2000 = 10 years

So city A grew from 12000 to 28000 that is city A had an increase of 16000 in 10 years.

While city b grew from 18000 to 24000 , that's an increase of 6000 in 10 years to.

For city A

10 years= 16000

1 year = 16000/10

1 year = 1600

For city B

10 years = 6000

1 year = 6000/10

1 year = 600

So we are to find what year the both cities had same population.

12000 + x1600 = y

18000 + x600 = y

X is the year difference

Y is the population at that year

Eliminating y gives

6000= x1000

X= 6

If x is 6

18000+3600= y

21600= y

So 6 years + 1990 = 1996

4 0
2 years ago
Aubree went shopping at her favorite store, Target. She bought 3 shirts and a pair of jeans that cost $28. She spent a total of
serg [7]

Answer:

88.00 and subtract 28 and the 3 shirts were

Step-by-step explanation:

answer 60

5 0
2 years ago
Read 2 more answers
Using the chart above, find the state withholding tax for the following unmarried person. Mary Smith, salary $342, 2 exemptions
dmitriy555 [2]

Answer: 6.76


Ufc7cutcutct7c7tctucitxitxitxitxit


3 0
2 years ago
Other questions:
  • The sum of two positive integers, x and y, is not more than 40. The difference of the two integers is at least 20. Chaneece choo
    7·2 answers
  • REPRESENT A PROBLEM: Six friends share 5 meat pies. Each friend first eats half of a meat pie. How much more meat pie does each
    7·1 answer
  • A building has eight levels above ground and one level below ground. The height of each level from floor to ceiling is 14 1/2 fe
    7·2 answers
  • A ladder is leaning against a wall. The top of the ladder is 9 feet above the ground. If the bottom of the ladder is moved 3 fee
    13·2 answers
  • Tricia got a 6% raise on her weekly salary. The raise was $30 per week. What was her original salary?
    8·2 answers
  • Given: mAngleEDF = 120°; mAngleADB = (3x)°; mAngleBDC = (2x)° Prove: x = 24 3 lines are shown. A line with points E, D, C inters
    5·2 answers
  • Fertilizer is sold in 100 pound bags labelled with the amount of nitrogen ( N), phosphoric acid ( P2O5), and potash ( K2O) prese
    8·1 answer
  • The value of x in logx(9/63)=1/2 is​
    14·1 answer
  • Now let's assume that you have a newer toilet that uses 6 L per flush, but you are considering upgrading to a dual-flush toilet.
    11·1 answer
  • Rounding to 1 significant figure, estimate 7.57 x 3.81 pls answer
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!