Answer:
6/13
Step-by-step explanation:
6+7
13
so 6/13
Answer:
We are effectively looking for a and b such that 5, a, b, 135 is a geometric sequence.
This sequence has common ratio <span><span>3<span>√<span>1355</span></span></span>=3</span>, hence <span>a=15</span> and <span>b=45</span>
Explanation:
In a geometric sequence, each intermediate term is the geometric mean of the term before it and the term after it.
So we want to find a and b such that 5, a, b, 135 is a geometric sequence.
If the common ratio is r then:
<span><span>a=5r</span><span>b=ar=5<span>r2</span></span><span>135=br=5<span>r3</span></span></span>
Hence <span><span>r3</span>=<span>1355</span>=27</span>, so <span>r=<span>3<span>√27</span></span>=3</span>
Then <span>a=5r=15</span> and <span>b=ar=15⋅3=45</span>
Answer: i do it by Dividing the whole number by 100 and multiplying by precent so i would get 15680 Divided by 100 times 35 = 5488
Step-by-step explanation:
Answer:
The percentile is 50.80
Step-by-step explanation:
Test statistic (z) = (weekly study time - average study time)/standard deviation
weekly study time = 10 hours
average study time = 9.92 hours
standard deviation = 4.54 hours
z = (10 - 9.92)/4.54 = 0.08/4.54 = 0.02 (to 2 decimal places)
Cumulative area of the test statistic is 0.5080.
Percentile = 0.5080×100 = 50.80
Answer: 19.5 is the answer
Step-by-step explanation: 39 divided by 2 is 19.5
