Answer:
The answer is A, 13, -13.
Step-by-step explanation:
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Here it is. You can also use the quadratic equation to find the answer.
Answer:
Step-by-step explanation:
How many questions are on the exam? Represent this by n.
Then 40% of n comes out to 12 questions, or more symbolically,
0.40n = 12, after which we get n = 12/0.40 = 30
Answers:
(1) 0.40n = 12 is the desired equation.
(2) n = 30 is the number of questions on the exam.
(3) See above for explanations.
2x + y = z
WHEN SOLVING FOR X :
2x + y = z
We just need to isolate x, so subtract y from both sides.
2x = -y + z
Then, divide both sides by 2.
2x ÷ 2 = -y + z ÷ 2
Simplify.
x = -y + z / 2 →

WHEN SOLVING FOR Y :
2x + y = x
We need to isolate y, so subtract 2x from both sides.
y = x - 2x
Simplify.
y = -x
~Hope I helped!~
Answer:
imma say 12 guests
Step-by-step explanation:
sorry if wrong