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
Ghella [55]
3 years ago
9

Please please helpppp.

Mathematics
1 answer:
padilas [110]3 years ago
7 0

There are 3 ways of solving a simultaneous problem, substitution method, elimination method and Gauss-Jordan method. I'm gonna use the substitution method since it's easier and i think it would suit your level more.

First let's try solving for y since it's easier to start with.

Firstly we have to find an equation for x:

x-2y=2\\x-2y+2y=2+2y\\x=2+2y

Great, now we can use the substitution method to find the value of y using the first equation:

2x+3y=11\\2(2+2y)+3y=11\\4+4y+3y=11\\7y=7\\y=1

Now we know that y=1 we can solve the first equation we made:

x=2+2y\\x=2+2(1)\\x=4

And the answer is x=4 , y= 1\\(4,1)

Double check:

2x+3y=11\\2(4)+3(1)=11\\8+3=11\\11=11\\\\x-2y=2\\(4)-2(1)=2\\2=2

And that's our final answer! (4,1)

You might be interested in
Question 8b , thanks
marta [7]

Answer:

Step-by-step explanation:

a = \frac{2b+1}{3b-1}

b = 2/3

2b + 1 = 2*\frac{2}{3}+1\\\\=\frac{4}{3}+1\\\\=\frac{4}{3}+\frac{3}{3}\\\\=\frac{7}{3}\\\\3b-1 = 3*\frac{2}{3}-1\\\\=2- 1 = 1\\\\\\

a = \frac{2b+1}{3b-1}\\\\a=\frac{\frac{7}{3}}{1}\\\\=\frac{7}{3}\\\\

a = 7/3

b)

\frac{2b+1}{3b-1}=a\\\\

Cross multiply,

2b + 1 = a*(3b - 1)

2b + 1 = a*3b - 3*a

2b + 1 = 3ab- 3a

2b = 3ab - 3a - 1

2b - 3ab = -3a  - 1

b(2 - 3a) = -3a - 1

b =\frac{-3a - 1}{2 - 3a}

3 0
2 years ago
How to find the mad of the set of data?
kramer

Answer:

<u>add up all numbers</u>

<u>then divide that number by the amount of numbers.</u>

Step-by-step explanation:

mad is basically finding the average of a set of numbers.

and how do you do that?

first, add up all numbers

ex: 1, 5,3,10,6,20,15,15,14  --> this adds up to 90.

then divide that number by the amount of numbers.

count how much numbers ehere are: there are 9 numbers.

divide 90 by 9 and the mad/average is 10.

plz give brainliestttt

5 0
3 years ago
Read 2 more answers
△ABC is given with line m drawn through A parallel to BC¯¯¯¯¯¯¯¯. In the course of proving that the interior angle measures of △
aleksklad [387]

Answer:

I think a) and c is correct.

4 0
3 years ago
(b) Ten men can assemble 400 cycles in 8 days. How many cycles 5 men will
Deffense [45]

Answer:

400

Step-by-step explanation

First, find how many cycles 5 man can make in 8 days.

400/2=200 (/ means divide)

Next, mutliply the answer to find out how many cycles 5 man can make in 16 days.

200x2=400

8 0
3 years ago
Which of the following equations could be used to find the value of 3,550 ÷ 25?
fiasKO [112]

Answer:

<em>A is correct answer</em>

Step-by-step explanation:

(3000 + 500 + 50) \div 25 \\

(3550) \div 25

=  =  > 3550 \div 25

Thanks

Don't forget to tell the name of your country.

8 0
2 years ago
Other questions:
  • A store allows customers to fill their own bags of candy. Terri decides she only wants jelly beans and chocolate drops. Jelly be
    6·1 answer
  • Anyone know the answer
    12·1 answer
  • A 25-foot ladder leans against a wall. The base of the ladder is 15 feet from the bottom of the wall. How far up the wall does t
    7·2 answers
  • Through a given point p on a plane how many lines can be drawn that are perpendicular to that plane
    14·1 answer
  • What is the value of 7+3M-2 when M = 4?
    11·2 answers
  • Identify a diameter of circle E. A) AC B) HI C) EB D) GF
    9·1 answer
  • Can someone explain how to calculate a unit rate ​
    9·1 answer
  • Frank is going to plant x vegetable seeds in one garden and 3x+2 vegetable seeds in another. How many seeds is frank going to pl
    13·2 answers
  • Y=7-3x. is it a linear or nonlinear
    15·2 answers
  • How do I simplify fractions and decimals?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!