Answer:
4.75% probability that the battery will last more than 9 hours before running out of power
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 probability that the battery will last more than 9 hours before running out of power g
This is 1 subtracted by the pvalue of Z when X = 9. So
has a pvalue of 0.9525
1 - 0.9525 = 0.0475
4.75% probability that the battery will last more than 9 hours before running out of power
Answer:
umm... there is no problem
5y+2x=10<span />y=<span><span>−25</span></span>x+2<span /><span>2</span><span>4</span><span>6</span><span>8</span><span>10</span><span>−2</span><span>−4</span><span>−6</span><span>−8</span><span>−10</span><span>2</span><span>4</span><span>6</span><span>8</span><span>10</span><span>−2</span><span>−4</span><span>−6</span><span>−8</span><span>−10</span>Let's solve for x.<span><span><span>5y</span>+<span>2x</span></span>=10</span>Step 1: Add -5y to both sides.<span><span><span><span>2x</span>+<span>5y</span></span>+<span>−<span>5y</span></span></span>=<span>10+<span>−<span>5y</span></span></span></span><span><span>2x</span>=<span><span>−<span>5y</span></span>+10</span></span>Step 2: Divide both sides by 2.<span><span><span>2x</span>2</span>=<span><span><span>−<span>5y</span></span>+10</span>2</span></span><span>x=<span><span><span><span>−5</span>2</span>y</span>+5</span></span>Answer:<span>x=<span><span><span><span>−5</span>2</span>y</span>+<span>5
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Answer:
2
Step-by-step explanation:
Answer:
15 times per seconds
Step-by-step explanation:
basta 15 times per seconds
