X = multiple choice and y = essay
x + y = 20.....x = 20 - y
3x + 11y = 100
3(20 - y) + 11y = 100
60 - 3y + 11y = 100
-3y + 11y = 100 - 60
8y = 40
y = 40/8
y = 5 <=== 5 essay questions
x = 20 - y
x = 20 - 5
x = 15 <== 15 multiply choice
Answer:
63.75
Step-by-step explanation:
255 divided by 4
You can tell when a number is rational because it can be represented as a fraction. Yes it is a rational number.
Answer:
x=7
Step-by-step explanation:
5x%2B7=6x Start with the given equation.
5x=6x-7 Subtract 7 from both sides.
5x-6x=-7 Subtract 6x from both sides.
-x=-7 Combine like terms on the left side.
Divide both sides by -1 to isolate x.
x=7 Reduce.
