Step-by-step explanation:
We will solve this system of equations using two methods: elimination and substitution.
Method 1: Elimination
2x - y = -8. #1
-5x + y = 26. #2
Note that by adding these two equations, the y-variable is eliminated (thus the name) and you're only left with an equation with one variable. So upon adding, we get
-3x = 18 or x = -6
Using this value for x, put this back in either one of the equations. Let's use the 2nd one.
-5(-6) + y = 26
--> 30 + y = 26
Moving 30 to the right side, we get y = -4.
Method 2: Substitution
This is done by isolating one variable to the left side in one equation and then using it on the other equation. Let's take equation #2 and put the y-variable on the left side and you should get
y = 5x + 26
Now use this equation and plug it into the y in equation #1:
2x - (5x + 26) = -8
--> 2x - 5x - 26 = -8
--> -3x = 26 - 8 = 18 or <u>x</u><u> </u><u>=</u><u> </u><u>-</u><u>6</u><u>.</u>
Use this value for x into either one of the equations. Let's use equation #1 this time.
2(-6) - y = -8
--> -12 + 8 = y or <u>y</u><u> </u><u>=</u><u> </u><u>-4</u><u>.</u>
Notice that using either method will give you the same result, as one might expect.
Answer:
Step-by-step explanation:
Given two events which are
A = the event that the place is a city
and
B = the event that the place is in north America.
We have to find outcomes which are either A or B
This can be denoted as event AUB which implies A or B or both
The event A or B is defined by the place is either a city or it is in north America or a place in north America.
Hence AUB = the place is a city or place is in North America
Answer:
you will need 100 feet of rope
Step-by-step explanation:
the current dimensions are 25 ft wide by 20 ft long, and they want it to have a width of 30 ft so the length is the same but the width canges by 5 so
20 times 5 = 100
hope this helps ;)
1. False They have them backwards
2. false it is an x intercept
3. verticle
Answer is 49
Formula is b^2-4(ac)
3^2-4(2*-5) while a=2, b=3, c=-5
9-4(2*-5)
9-4(-10)
9+40
49
Hope this helps!
