I'm pretty sure it's 0.04, 0.044, 0.4, 0.404, 0.44, 0.444.
Find an explicit formula for the geometric sequence −1,−7,−49,−343,...-1\,,-7\,,-49\,,-343,... −1,−7,−49,−343
umka21 [38]
So we see it times 7 each time
starting with -1
geometric
an=a1(r)^(n-1)
a1=first term
r=common ratio
first term is -1
r=7
is the formula
also can look like this:
Answer:
A) $2.42, $2.33, $2.58
B) The best deal is 24 cupcakes for $56
Step-by-step explanation:
As soon as you see "How many times . . .", that usually tells you that finding the answer involves <em>division</em>. (It certainly does in this one.)
(1.2 x 10⁵) / (4.9 x 10³) =
(1.2/4.9) x (10⁵⁻³) =
0.245 x 10² = <em>24.5 times</em>
It looks like <em>B</em> is the closest choice.
Our goal here is to create a copy of line segment PQ, through various steps. Let's start with drawing line segment PQ, respectively point R a fixed distance away from the segment.
It would be wise to use a compass in this case, and a ruler for certain.
So we have this segment PQ, and point R a " fixed distance " away from PQ.
( 1. Extend a compass to match with the length of PQ,
( 2. Move this compass ( without changing it's length ) so that one endpoint matches with point R
( 3. Now draw an arc with this compass, where this line will be
( 4. Take your ruler and draw a straight line from this point R to your arc. It would be wise to draw this line to the middle of the arc you created.
If you like, take a look at the attachment below to see what it should look like.
I have done these questions before, so I can assure you that this experiment is proved correctly!