Answer:
4x-8
Step-by-step explanation:
simplify by combining like terms so 4x and then -24+16=-8
Answer:
Step-by-step explanation:
Given
Required
Express in terms of y and x
The given rate is a ratio of distance to time.
So:
Substitute values for Distance and Time
Substitute 15 for Ratio
Cross Multiply
Hence: the situation is represented by
Answer:
i dont wan to explain though
Step-by-step explanation:3
Answer:
The triangles are similar by AA similarity.
Thus
AB/AD = BC/DE
6/10 = 2/x
x = 3.33
Answer:
The sample consisting of 64 data values would give a greater precision.
Step-by-step explanation:
The width of a (1 - <em>α</em>)% confidence interval for population mean <em>μ</em> is:
So, from the formula of the width of the interval it is clear that the width is inversely proportion to the sample size (<em>n</em>).
That is, as the sample size increases the interval width would decrease and as the sample size decreases the interval width would increase.
Here it is provided that two different samples will be taken from the same population of test scores and a 95% confidence interval will be constructed for each sample to estimate the population mean.
The two sample sizes are:
<em>n</em>₁ = 25
<em>n</em>₂ = 64
The 95% confidence interval constructed using the sample of 64 values will have a smaller width than the the one constructed using the sample of 25 values.
- Width for <em>n</em> = 25:
- Width for <em>n</em> = 64:
Thus, the sample consisting of 64 data values would give a greater precision.