Answer:
78 novels
Step-by-step explanation:
N= novels
M= month
6N = 1M
? = 13M
6N × 13M= 78NM
78NM ÷ 1M
cancel M, therefore;
the number of novels Usama needs to read in 13 months is 78.
<span>The number below the line in a common fraction
The answer is 3</span>
Answer:
9
Step-by-step explanation:
Plug in -2 for x, and -1 for y, and solve:
3x - 4y + 11
3(-2) - 4(-1) + 11
Remember to follow PEMDAS. First, multiply. Remember, that when you multiply:
2 positive signs will result in a positive answer.
1 positive & 1 negative will result in a negative answer.
2 negative will result in a positive answer.
3 * -2 = -6
-4 * -1 = 4
-6 + 4 + 11 = 9
9 is your answer.
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We have been given that the ages of students in a school are normally distributed with a mean of 15 years and a standard deviation of 2 years.
We are asked to find the percentage of students that are between 14 and 18 years old.
First of all, we will find z-score corresponding to 14 and 18 using z-score formula.
Similarly, we will find the z-score corresponding to 18.
Now we will find the probability of getting a z-score between 
and 
that is 
.
Using normal distribution table, we will get:
Let us convert 
into percentage.
Therefore, approximately 
of the students are between 14 and 18 years old.
9) Original price: $45 ; discount rate : 20% off
Discount = $45 * 20% = $9
Sales price = $45 - $9 = $36
10) Original price : $450 ; discount rate : 30% off
Discount = $450 * 30% = $135
Sales price = $450 - $135 = $315
11) Original price : $48 ; discount rate : 15% off
Discount = $48 * 15% = $7.20
Sales price = $48 - $7.20 = $40.80
12) Original price : $150 ; discount rate : 25% off
Discount = $150 * 25% = $37.50
Sales price = $150 - $37.50 = $112.50
13) Original price : $1,450 ; discount rate : 40% off
Discount = $1,450 * 40% = $580
Sales price = $1,450 - $580 = $870
14) Original price : $82 ; discount rate : 50% off
Discount = $82 * 50% = $41
Sales price = $82 - $41 = $41
