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! :)
Answer:
A triangle has side lengths of 13, 5, 10 and angle measures of 30 degrees, 100 degrees, and 50 degrees.
Step-by-step explanation:
The weighted average of the numbers -1 and 1, with weight 2/3 on the first number and 1/3 on the second number is 0.33
What is weighted average?
Weighted average is the sum of the two numbers multiplied by their respective weights, in other words, the weighted average can be determined using the below formula :
Weighted average=(first number*its weight)+(second number*its weight)_
weighted average=(1*2/3)+(-1*1/3)
weighted average=0.33
Find out more about weighted average on:brainly.com/question/28042295
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Answer:
try D
Step-by-step explanation:
Answer:
It is -3 degrees Celsius per 1 hour
Step-by-step explanation:
