Using the mean concept, it is found that we will need 15 more points to bring up his average up to 90%.
The mean of a data-set is the <u>sum of all observations divided by the number of observations</u>.
In this problem:
- In the first 5 observations, total of 21 out of 25 points, hence the mean for these observations is
. - In the next n observations, mean of 1.
Hence, the mean is:

We want the mean to be of 0.9, thus:





3 more testes are need, each worth 5 points, hence, 15 more points are needed to bring up his average up to 90%.
A similar problem is given at brainly.com/question/25323941
Answer:
$3,787
Step-by-step explanation:
frist find the amount of intrest
3,500 X 0.082 X 1 = 287
next add the oragial amount to the amount of intrest
3,500 + 287 = 3,787
Hope this helps you, and good luck in the future :)
X intercept is 4/3 because you plug zeros in for y to find the y intercept
Answer: 32 pints
Explanation:
.16 x 25 = 4 gallons convert to pints
1 gallon is equal to 8 pints so 4 x 8 = 32 pints