Answer:
3.5 dollars per sticker
Step-by-step explanation:
60 - 18 = 42
42 ÷ 12 = 3.5
I think this is the correct but it may be not , sorry if I wasn't that helpful...
Answer:
D
Step-by-step explanation:
Answer:
(a) 0.0833
(b) 0.5
Step-by-step explanation:
We are given that an instructor gives her class a set of 10 problems from which random selection of 5 questions will come in the final exam and a student knows how to solve 7 of the problems from those 10 total problems.
(a) To calculate the probability that the student will be able to answer all 5 problems in the final exam, we consider that:
Student will be able answer all 5 problems in the final exam only when these 5 problems came from those 7 questions which he knows how to solve.
So the ways in which he answer all 5 problems correctly in the final exam
=
and total ways in which he answer 5 problems from the set of 10 problems
=
So, the Probability that he or she will answer correctly to all 5 problems
= = = 0.0833
(b) Now to calculate the probability that he or she will answer correctly at least 4 of the problems in the final exam is given by that [He or she will be able to answer correctly 4 problems in the exam + He or she will be able to answer correctly all 5 problems in the exam]
So the no. of ways that he or she will be able to answer correctly 4 problems in the exam = He or she answer correctly 4 questions from those 7 problems which he knows how to solve and the remaining one question from the other 3 questions we he don't know to solve =
And the no. of ways that he or she will answer correctly all 5 questions in the final exam =
Therefore, the required probability = = = 0.5 .
Use the distributive property to multiply 3 by x−4.
Subtract 5x on both sides.
Combine 3x and −5x to get −2x.
Add 12 to both sides.
Divide both sides by −2. Since −2 is < 0, the inequality direction is changed.
So in the <u>inequality 3(x-4)>5x +2</u>, the value of x is -7.
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