Answer:
For random samples of 100 seniors, 68% of the sample means fall between 340 and 520
Step-by-step explanation:
As a property of normal distribution, 68% of sample means fall between mean - sigma(430 - 90 = 340) and mean + sigma (430 + 90 = 520) (here, sigma is standard deviation).
Hope this helps!
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Answer:
The scale factor of the following dilation is, 0.5
Step-by-step explanation:
The rule of dilation with scale factor k is given by:

As per the statement:
Given the following dilation:
(10, 0) → (5, 0) .....[1]
We have to find the scale factor.
Using the above rule we have;

Now compare this with equation [1] we have;
(10k, 0) = (5, 0)
⇒10k = 5
After solving we get;

Therefore, the scale factor of the following dilation is, 0.5
Answer: x=1
Step-by-step explanation:
x - 4 -5 = -8 combine like terms on the left side
x - 9 = - 8 Add 9 to both sides
+9 +9
x = 1
Answer:
It is A, i hope that answers your question
Step-by-step explanation: