Answer:
<h2>B. 7.1</h2>
Step-by-step explanation:
Given the sample data 2 6 15 9 11 22 1 4 8 19, before we can get the standard deviation, we need to first calculate the mean.
mean = 2 +6 +15 +9 +11 +22 +1 +4 +8 +19/10
mean = 97/10
mean = 9.7
Standard deviation for ungrouped data is expressed using the formula;
<em>Hence the standard deviation of the sample data is 7.1</em>
For a quadratic equation ax^2 + bx + c = 0, the discriminant is given by b^2 - 4ac
Thus for a^2 - 2a + 5 = 0,
a = 1, b = -2 and c = 5
b^2 - 4ac = (-2)^2 - 4(1)(5) = 4 - 20 = -16
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Below are the choices:
A.
<span>Add matrix A to the inverse of matrix B. </span>
<span>B. </span>
<span>Add matrix A to the inverse of matrix A and then subtract it from matrix B. </span>
<span>C. </span>
<span>More data is needed to calculate the sales during weekdays. </span>
<span>D. </span>
<span>Subtract matrix B from matrix A. </span>
<span>E. </span>
<span>Add matrix A to matrix B.
</span>
The answer is D.
Square roots of 17^2-10^2
=13.74772708
= 13.7 the nearest tenth
Answer:
Step-by-step explanation:
Using the rules of exponents
⇔
⇔
Given
=
=
=