Answer:
15 answers
Step-by-step explanation:
To solve this question we need to set up an equation.
Let's name the number of incorrect answers x.
<u>We can set up an equation that's essentially:</u>
(Points for correct answer)*(number of correct answers)+(points for incorrect answer)*(number of incorrect answers)=final score
When we plug in our numbers and variables it looks like this:
5(3)+(-2x)=-15
Simplify
15-2x=-15
Subtract 15 from both sides
-2x=-30
Divide both sides by -2
x=15
This means Smitha attempted 15 wrong answers, and that there were 18 questions in total.
Answer:
a ) 2¹/2
Step-by-step explanation:
plz follow me
plz plz
Answer:
$2.70
Step-by-step explanation:
Elsie is selling the shirt for 45% more than she paid for it. So, you would multiply 6, the initial cost of the shirt times 0.45, which would get you 2.7 or $2.70.
Since we can see that she would be selling the shirt for $8.70 but she loses $6 to represent the shirt's initial cost (8.70-6), then we can see that she makes $2.70 for each shirt sale.