19: He multiplied instead of dividing which will make a totally incorrect answer
Answer:
Jessica's work (B)
Step-by-step explanation:
I just took quiz & got it right.
Answer:
x = 4
y = 13
Step-by-step explanation:
x + y = 17
y = 2x + 5
substitute for y:
x + (2x + 5) = 17
reduce:
3x + 5 = 17
subtract 5 from each side:
3x = 12
divide both sides by 3:
x = 4
y = 2(4) + 5
y = 13
12 ÷ 3/4:
First, there are many ways to divide a whole number by a fraction. In my way, I take acknowledgment to the rules. There are other ways to do this, like the reciprocal way. To first get started, I'm going to give you the rule which is: (a ÷ b/c = a × c/b). We can now replace our numbers in the variables place.
Second, we can simplify. To do so, (12 × 4 = 48). 48 is our new numerator while we keep the denominator we started out with (3).
Third, this is where long division comes in handy. I can't exactly do it on a website, but I am going to try. It is best if done on a piece of paper.
Answer:
Answer:
Step-by-step explanation:
4x - 3y = 18
-4x - 8y = 4
-11y = 22
y = -2
4x + 6 = 18
4x = 12
x = 3
(3, -2)