9514 1404 393
Answer:
- vertex: 171°
- central: 9°
- exterior: 9°
Step-by-step explanation:
The central angle is equal to the exterior angle:
360°/n = 360°/42 = 8 4/7° ≈ 9°
The vertex angle is the supplement of this:
180° -8 4/7° = 171 3/7° ≈ 171°
The next pattern is 364...
the pattern is by multiples of 3 added to the preceding number;
example, 1+3= 4 that's 3
4+9=13 because 3*3 is 9
13+27=40 coz 9*3 is 27
40+81=121 coz 27*3 is 81
121+243=364 coz 81*3 is 243
and so on and so forth..
hope this helps!
Answer:
(x - 3)² + (y + 5)² = 10
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
Here (h, k) = (3, - 5 ) , then
(x - 3)² + (y - (- 5) )² = r² , that is
(x - 3)² + (y + 5)² = r²
r is the distance from the centre to a point on the line
Calculate r using the distance formula
r =
with (x₁, y₁ ) = (3, - 5) and (x₂, y₂ ) = (6, - 4)
r =
=
=
= ⇒ r² = ( )² = 10
(x - 3)² + (y + 5)² = 10 ← equation of circle
I think the answer is (-8,-6) I’m not sure sorry
Answer: correct: B. If the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 21% of the time, so the test is not statistically significant.
Step-by-step explanation:
the test of the statistical p helps us to find the probability that a statistical value occurs in the null hypothesis, in the exercise we obtain a value of p of 0.21, we assume that for it to have statistical significance the value must be less than 0.05 which is constant, if this result is higher it indicates that there is no statistically significant evidence