How do you do simultaneous equations by the method or substitution?

Mathematics

1 answer:

ozzi2 years ago

5 0

Answer:

Here's the simplest example possible: let's say x + y = 3 and x - y = 1. Solve the second equation for x by adding y to both sides: (x - y) + y = 1 + y. So x = 1 + y. Take that value of x, and substitute it into the first equation given above (x + y = 3).

You might be interested in

Stephen is a good basketball player who makes 75% of free throws. He practices so often that he never feels tired even if you as

BabaBlast [244]

Answer:

100 percent

Step-by-step explanation:

If he makes 150 throws out of 200, that is 75 percent so he is guaranteed to make at least 150

8 0

2 years ago

After restocking the vending machines, Efrain determined that 2 out of every 5 packages of candy sold were M&M'S®. The vendi

julia-pushkina [17]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

It is 9:00. What is the measure of the smaller angle between the hour hand

Ksivusya [100]

Answer:

The hour hand is three-fourths of the way from the "4" to the "5; that is, ... What is the angle between the hour hand and the minute hand at 4:40? ... What is the measure of the smaller angle formed by the hands of an analog watch if the hour hand is on the ... One has to account, however, for the 10 minutes that have passed.Step-by-step explanation:

5 0

3 years ago

Pls help, question on picture, will do brainliest if right<br> no links!!!!!

Flura [38]

Sin = opposite/hypothenuse
Given opposite = 16
Hypothenuse = ?
Use Pythagorean theorem to find hypothenuse

12^2 + 16^2 = h^2
144 + 256 = h^2
h^2 = 400, h = 20

You know hypothenuse is 20
Opposite/hypothenuse

Solution: 16/20
Simplify if you need to (4/5)

5 0

3 years ago

Read 2 more answers

Find all of the points of the form (x −1) which are 4 unit from the point (3,2)

Bond [772]

Answer:

$(3+2\sqrt{2},2+2\sqrt{2}),(3-2\sqrt{2},2-2\sqrt{2})$

Step-by-step explanation:

$Points\ are\ of\ the\ form\ (x,x-1)\\\\Distance\ of\ these\ points\ from\ (3,2)=4\\\\\sqrt{(x-3)^2+(x-3)^2}=4\\\\\sqrt{(x-3)^2+(x-1-2)^2}=4\\\\\sqrt{2(x-3)^2}=4\\\\2(x-3)^2=16\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ square\ both\ the\ sides\\\\(x-3)^2=\frac{16}{2}\\\\(x-3)^2=8\\\\(x-3)=\pm 2\sqrt{2}\ \ \ \ \ \ \ \ \ \ \ square\ root\ both\ the\ sides\\\\x=3\pm 2\sqrt{2}\\\\When\ x=3+2\sqrt{2}\ \ \Rightarrow x-1=3+2\sqrt{2}-1=2+2\sqrt{2}\\\\When\ x=3-2\sqrt{2}\ \ \Rightarrow x-1=3-2\sqrt{2}-1=2-2\sqrt{2}$

4 0

2 years ago

How do you do simultaneous equations by the method or substitution?​

How do you do simultaneous equations by the method or substitution?