Find the pattern

-3,-1,3,9

Each answer is multiplied by 3 to get the next one

To find the pattern we need to subtract the given integers.

Thus, we ned to subtract the 2nd term from the 1st rems and 3rd from 2nd and so on...

⇒(-3)-(-1)=-2

Now,

(-1)-3= -4

Now,

3-9=-6

Now the defferences between the given terms are, -2, -4, -6

So here we see the difference between the terms are mutiples of 2 increasing according to their places, but interestingly we are not actually subtracting from any of the terms to get the next number, we are adding as you can see it in the last 2 terms 3&9 as only when we add 6 to 3 we get 9 and not when we subtract, so the pattern will be,

-3,-1,3,9,[9+8=17],[17+10=27]

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.

l.ln.lln.k.nkl

step-by-step explanation: