Answer:
The correct options are;
Answer to A1 is D
Answer to A2 is D
Answer to A3 is D
Answer to A4 is D
Answer to A5 is D
Answer to A6 is D
Answer to A7 is D
Answer to A8 is D
Answer to A9 is D
Answer to B1 is I
Answer to B2 is I
Answer to B3 is I
Answer to B4 is I
Answer to B5 is I
Answer to B6 is I
Step-by-step explanation:
The given function is f(x) = 9·x² + 54·x - 66
The extremum of the function are found as follows;
d(f(x))/dx = 0 = d(9·x² + 54·x - 66)/dx = 18·x + 54
∴ 18·x + 54 = 0 at the maximum or minimum points
x = -54/18 = -3
Given that d²(f(x))/dx² = 18 > 0. x = -3 is a minimum point
Given that the function is a quadratic function, we have;
1) Points to the left of x = -3 are decreasing
2) Points to the right of x = -3 are increasing.
Try calculating each of these yourself:
<span>First, 34(58 + 9) = 34(67) = 2278 </span>
<span>A. 34 x 67 = 2278 </span>
<span>B. 58(34 + 9) = 58(43) = 2494 </span>
<span>C. 34 x 58 + 34 x 9 = 34 x (58 + 9) = 34 * 67 = 2278 </span>
<span>D. 1,972 </span>
<span>So the answer is B and D are not equal to 34(58 + 9).
Hope I helped! If you need anything else just ask!</span>
Answer:
7x+7 is obviously divisible by 7.
put in any value high enough and you can find the two three digit numbers.
Step-by-step explanation:
SOLUTION:
<h2>
Explanation:</h2>
Let's use the following System of Linear Equations in Two Variables in order to solve this exercise:
So we can graph these lines using two points.
For eq (1):
So graph a line that passes through these two points. This is the red line shown below.
For eq (2):
So graph a line that passes through these two points. This is the blue line shown below.
<em>The solution of this system of equation is the point of intersection, which is (1,3)</em>
<h2>Learn more:</h2>
Parallel lines: brainly.com/question/12169569
#LearnWithBrainly
Answer:
The minimum level for which the battery pack will be classified as highly sought-after class is 2.42 hours
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean 
and standard deviation 
, the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
What is the minimum level for which the battery pack will be classified as highly sought-after class
At least the 100-10 = 90th percentile, which is the value of X when Z has a pvalue of 0.9. So it is X when Z = 1.28.
The minimum level for which the battery pack will be classified as highly sought-after class is 2.42 hours
