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
Sati [7]
2 years ago
11

4x+5y=13,3x+2y=8 in substitution method​

Mathematics
2 answers:
Rus_ich [418]2 years ago
7 0
X= 5.20625 Y= -2.565
dybincka [34]2 years ago
5 0

answer: x= 2,y=1

hope i helped you :0

You might be interested in
Describe a ways car manufacturers try to reduce drag and why
topjm [15]

Answer:

by alternating the density of the air and the vehical's speed.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Which relationships have the same constant of proportionality between yyy and xxx as the equation 3y=27x3y=27x3, y, equals, 27,
Tanya [424]

Answer:

A, B and C

Step-by-step explanation:

In the equation: 3y=27x

Making y the subject of the equation, we have:

y=\frac{27}{3}x\\y=9x

The constant of proportionality between y and x  is 9.

We want to determine which relationships have the same constant of proportionality 9.

<u>Option A</u>

y=9x

The constant of proportionality is 9.

<u>Option B</u>

2y=18x

Divide both sides by 2 to obtain: y=9x

The constant of proportionality is 9.

<u>Option C</u>

x=3, y=1/3

Substitution into y=kx gives:

1/3=3k

k=9

The constant of proportionality is 9.

<u>Option D</u>

x=6, y=2/3

Substitution into y=kx gives:

2/3=6k

k=2/3*6=4

The constant of proportionality is 4.

<u>Option E</u>

When x=2, y=18

Substitution into y=kx gives:

18=2k

k=9

However, when x=4, y=27

Substitution into y=kx gives:

27=4k

k=6.75

This is not a proportional relation since the constant of proportionality is not equal.

The correct options are A, B and C

4 0
3 years ago
The bird population on an island is declining at a rate of 2.2% per year. If the population was 3500 in the year 2009, which is
Vinil7 [7]
Given:
2009 : 3,500 population
decrease of 2.2% per year. 
100% - 2.2% = 97.8%

2014 - 2009 = 5 years

3,500 * (0.978)^5 = 3,500 * 0.89473 = 3131.57

The bird population in 2014 will be 3,131.57 or 3,132.
7 0
3 years ago
Read 2 more answers
The product of - 73 and a number.
Olenka [21]

Answer:

The answer is -73x.

5 0
2 years ago
Read 2 more answers
Volume=125 cu ft<br> Length=5 ft <br>Width=?___ <br>Height=5 ft​
Olegator [25]

Answer:

5 ft.

Step-by-step explanation:

First, start with a formula. To find the volume, you have to multiply the length, width, and height.

V = lwh

Plug in the variables that you already know.

125 = 5 ⋅ w ⋅ 5

Simplify.

125 = 25w

Divide both sides by 25 to isolate w.

5 = w

6 0
3 years ago
Other questions:
  • What is 30% of 70. show your work<br>​
    10·2 answers
  • 10 less than 222 is_.
    14·2 answers
  • In a 2011 survey of consumers , 3 out of 4 reporters that they received more emails than they can read. If 2224 consumers were i
    13·1 answer
  • Find the range of ƒ(x) = –x + 4 for the domain {–3, –2, –1, 1}.
    5·2 answers
  • 9. Ashley's bank account had a balance of -$448.37. She deposited 3
    13·1 answer
  • 3) The foot of a ladder is 1.2 m from a fence
    12·1 answer
  • Mr smith owns a bike store and typically marks up the bikes 20% over the price that the bikes cost him. The bikes cost him 69.95
    9·1 answer
  • Find the perimeter of the irregular shape
    15·1 answer
  • What type of graph is this?
    13·1 answer
  • 3.Give some examples of commutative property of multiplication and some non examples​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!