The correct answer would be 42.50
Work:
50 divided by 100 = .5
.5 * 15 = 7.5
50 - 7.5 = 42.50.
C: 4 and 5, because 5x4=20 hope it helps
Answer:
S10 = 320
Step-by-step explanation:
The formula for calculating the sum of the nth term of an AP is expressed as
Sn = n/2(2a+(n-1)d))
Given
a = 4
d = 5
n = 10
S10 =10/2{2(5)+(10-1)5}
S10 =5{10+9(6)}
S10 =5{10+54}
S10 = 5(64)
S10 = 320
Hence the sum of the first ten terms of the sequence is 320
Answer:
a: sample mean: 130.2 pounds
This is not the population mean
Step-by-step explanation:
To find the mean weight of the sample, add up all the values and divide by the total number of values entered. In this case, 10, so we have...
mean: (136 + 99 + 118 + 129 + 125 + 170 + 130 + 128 + 120 + 147)/10 =
1302/10 = 130.2
This is not the population mean. It is the mean of the sample. We would have to know more information to make a conjecture about the population mean.
There are 5.1090942e+19 different ways this test can be completed
<h3>In how many different ways can this test be completed?</h3>
The given parameters are:
Questions, n =21
Options = 2 i.e. true or false
The number of different ways this test can be completed is calculated as:
Ways = n!
Substitute 21 for n in the above equation.
So, we have:
Ways = 21!
Expand the above equation
Ways = 21 * 20 * 19 * ...... 1
Evaluate the products
Ways = 5.1090942e+19
Hence, there are 5.1090942e+19 different ways this test can be completed
Read more about factorials at:
brainly.com/question/25997932
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