Question 1:
It's mostly a preference problem. You can do any of those options and still be correct. The easiest is to solve for y in the second equation. All you have to do is subtract 2x.
Question 2:
x is already solved for. graphing doesn't matter in the substitution method. Since x is already solved for, then it would be easy to substitute 2-y for x in the second equation.
Question 3:
If you are given x, then just substitute the value for x in the y = equation.
x = 10
y = 3x - 5
y = 3(10) - 5
y = 30 - 5
y = 25
Answer:
(3+1) x² + (4-5) x + (-2+3)=
4 x² - x + 1
Answer:
First of all Johnny would be very late for school.
second of all the sun is always orange or yellow
third of all you spelled color wrong you European!
Step-by-step explanation:
Answer:
x/2 + 21 = 36
First we get rid of constants to isolate the variable.
In order to do that we must do the inverse operation.
Inverse operation of addition is subtraction.
-21 -21(subtracting 21 from both sides, whatever we do to the left side we do it to the right side too)
x/2 = 15
inverse property of division is multiplication
x2 x2
X = 30
Answer:
1 17/21
Step-by-step explanation:
the answer is 1 and 17 over 21