Answer:
k = 3
Step-by-step explanation:
Given that y and x are directly related then the equation relating them is
y = kx ← k is the constant of variation
To find k use the condition y = 81 when x = 27
k =
=
= 3
Answer:
(
)
Step-by-step explanation:
b/c 4/5*7/12
means 4*7 and 5*12
then28/60
hope it's helpful
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Answer – C. the sample size 16 is too small
If we toss a coin 16 times in order to test the hypothesis
H0: p = 0.5 that the coin is balanced, we can't use the z-test for a proportion
in the situations because the sample size 16 is too small. The z-test is best
used when the sample size is greater than 30; when the sample size is less than
30, t-test is more appropriate.
Answer:
h = 7.1 cm
Step-by-step explanation:
To find the height of the triangle, we can first find the area of the triangle using the Heron's formula:

Where a, b and c are the sides of the triangle and p is the semi perimeter of the triangle:

So the area of the triangle is:


Now, to find the height, we can use the following equation for the area of the triangle:

The height draw in the figure is relative to the side of 17 cm, so this side is the value of base used in the formula. So we have that:



Rounding to the nearest tenth, we have h = 7.1 cm
Answer:
Step-by-step explanation:
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