Answer:
x = 6.5
Step-by-step explanation:
You have to apply the distributive property of multiplication:
7(x-2) = 3(x+4)
7x - 14 = 3x + 12
7x - 3x = 12 + 14
4x = 26
x = 6.5
The probability that a student, chosen at random, does not study chemistry is 20/41.
<h3>
What is Probability?</h3>
Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event. For an experiment having 'n' number of outcomes, the number of favorable outcomes can be denoted by x. The formula to calculate the probability of an event is as follows.
Probability(Event) = Favorable Outcomes/Total Outcomes = x/n
Here, Total number of student = 41
Student who does not study chemistry = 20
So, the probability = favorable outcome / total outcomes
P(not studying chemistry) = 20 / 41
Thus, The probability that a student, chosen at random, does not study chemistry is 20/41.
Learn more about Probability from:
brainly.com/question/11234923
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Answer:
$122.50
Step-by-step explanation:
Sale Price: $70
Percent off: 75%
First, find 75% of 70.
To do so, you must change the percent to a decimal (75% to .75) and multiply it by 70.
.75 x 70 = 52.5
52.5 is the amount of money that was taken off the original price, so in order to find that, you must add it to the sale price.
52.5 + 70 = 122.5
So the original price was $122.50
Answer:
wheres the picture
Step-by-step explanation:
