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
Juli2301 [7.4K]
3 years ago
12

How to substitute equations

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
5 0
When you are substituting equations, all you are doing is plugging in variables. Lets do an example..something random but easy...
y = 2x - 3
4x + 2y = 10
So since 2x + 3 equals y we are going to plug in those numbers into the second equation.
4x + 2(2x - 3) = 10
Now we distribute
4x + 4x - 6 = 10
Combine like terms.
8x - 6 = 10
Add 6 to both sides.
8x = 16
Divide.
x = 2
And thats how you substitute equations.
I hope this helps love! :)
You might be interested in
PLEASE HURRY ITS URGENT!<br>What is distance between A &amp; B?<br>​
Juliette [100K]

Answer:

7.62

Step-by-step explanation:

use the Pythagorean theorem

3^2+7^2=58

the square root of 58 is about 7.62

6 0
3 years ago
WHAT IS 41SQUARED PLUS XSQUARED +213?
Bingel [31]

Answer:

1894+x^2

Step-by-step explanation:

1894+x^2

41 squared IS 1,681.

Adding 213 makes it 1894.

And you end up with the expression 1894+x^2

Hope this helps!

4 0
3 years ago
There are 12 appetizers; 4 are soups, 6 contain meat, and 2 do not. In how
Ahat [919]
72 different orders, each soup can have a different meat and other* so take 4* 6* 3 because that is how many different combanations you can do
7 0
3 years ago
Read 2 more answers
PLEASE HELP ME NOW!!!! DUE VERY SOON! PLEASE I BEG YOU!
insens350 [35]

Step-by-step explanation:

I'm trying to solve this problem but there's something wrong

What's the radius of one ball?

7 0
3 years ago
Family traveled 25 miles in 1/2 hour. If it’s currently 3:00 pm and the destination is 225 miles away, what time will they arriv
dangina [55]

It is currently 03:00 PM, the family will reach at 03:00+4.5 = 07:30 PM

Step-by-step explanation:

We have to calculate the speed first to find the time it will take the family to complete the trip.

Given

Distance = d = 25 miles

Time = t = 1/2 hours = 0.5 hours

Speed =\frac{d}{t}\\=\frac{25}{0.5}\\=50 miles\ per\ hour

Now,

Distance remaining = 225 miles

Speed = 50 miles per hour

s=\frac{d}{t}\\t=\frac{d}{s}\\t=\frac{225}{50}\\t=4.5\ hours

As we see that the time required to complete the journey is 4.5 hours.

It is currently 03:00 PM, the family will reach at 03:00+4.5 = 07:30 PM

Keywords: Speed, Distance

Learn more about speed at:

  • brainly.com/question/11280112
  • brainly.com/question/11286417

#LearnwithBrainly

3 0
3 years ago
Other questions:
  • How many 9 does it take to make the same amount is 1 third
    6·2 answers
  • A box contains 60 red, blue, and green pens combined. If 35% are red and 9 are blue, what percent are green?
    7·2 answers
  • How do you do 9/16x = 3/4
    7·2 answers
  • What is 2 equivalent fractions to the fraction 4/7
    15·1 answer
  • The clownfish Kay wanted to buy for $12 last week has been marked up 8%. What is the new price of the fish?
    15·1 answer
  • Find the distance between the given points. Given the answer in simplest radical form. (1,1) and (9,1)
    9·1 answer
  • PLS HELP ME ASAL FOR ALL 6!!! (MUST SHOW WORK FOR ALL!!) + LOTS OF POINTS!!
    12·1 answer
  • Can someone please explain how to do these? I forgot how go
    14·1 answer
  • X-9= 1/4x + (1/4x + 12) + (1/4x - 3) what’s that answer?
    6·1 answer
  • Convert the following equation into Slope Intercept Form "y=mx+b".<br><br> y-7=1/3(x+15)
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!