Using the normal distribution, it is found that 58.97% of students would be expected to score between 400 and 590.
<h3>Normal Probability Distribution</h3>
The z-score of a measure X of a normally distributed variable with mean 
and standard deviation 
is given by:
- The z-score measures how many standard deviations the measure is above or below the mean.
- Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.
The mean and the standard deviation are given, respectively, by:
The proportion of students between 400 and 590 is the <u>p-value of Z when X = 590 subtracted by the p-value of Z when X = 400</u>, hence:
X = 590:
Z = 0.76
Z = 0.76 has a p-value of 0.7764.
X = 400:
Z = -0.89
Z = -0.89 has a p-value of 0.1867.
0.7764 - 0.1867 = 0.5897 = 58.97%.
58.97% of students would be expected to score between 400 and 590.
More can be learned about the normal distribution at brainly.com/question/27643290
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Choices: <span>A. 16/9
B. 4/3
C. 32/9
D. 64/27</span>
Given:
number of pints used for larger chest = 16 pints
number of pints used for smaller chest = 9 pints
Ratio of the volume of the larger chest compared to the smaller chest.
We will use the number of pints used in lieu of the volume of each chest.
16 / 9 is the ratio. Choice A.
It will be cost $ 42.39 for 27 slices of pizza
<h3>
Further Explanation</h3>
A slice of pizza = $1.57
27 slices of pizza = the number of pizza x price/slice
= 27 x 1.57
We are going to use standard algorithm to solve this multiplication
1.57 ⇒ 2 decimal places
<u> 27</u> x ⇒ 0 decimal place
1099
<u> 314 </u>+
42.39 ⇒ 2 decimal places
In decimal number multiplication, the process is the same with the whole number multiplication. Only always remember when to put the decimal point in the answer.
<h3>Learn more</h3>
Total spend brainly.com/question/12203917
Decimal multiplication brainly.com/question/2308946
Decimal multiplication brainly.com/question/1254534
Keywords: multiplication, decimal multiplication, two digits number additional, additional, area, measurement
Let x = hours to meet
train one has a 2 hour head start or 210 km head start
210 + 105x = 135x
30x = 210
x = 7 hours to meet
Given that,
An equation : -9c² +2c +3 = 0
To find,
Find the value of x.
Solution,
We have, -9c² +2c +3 = 0
We can solve it using the formula as follows :
Here, a = -9, b = 2 and c =3
Put the values,
So, the solution are -0.47 and 0.69.
