check the picture below.
notice, a function that is decreasing, namely have a negative slope, doesn't have to be negative.
Answer:
42+18=6(7+3)
Step-by-step explanation:
6x7=42 and 6x3=18
So you label -20 on the number line. Then you split it into -5 and count much space is in between the <em>'split'.</em>
Answer:
Either
(approximately
) or
(approximately
.)
Step-by-step explanation:
Let
denote the first term of this geometric series, and let
denote the common ratio of this geometric series.
The first five terms of this series would be:
First equation:
.
Second equation:
.
Rewrite and simplify the first equation.
.
Therefore, the first equation becomes:
..
Similarly, rewrite and simplify the second equation:
.
Therefore, the second equation becomes:
.
Take the quotient between these two equations:
.
Simplify and solve for
:
.
.
Either
or
.
Assume that
. Substitute back to either of the two original equations to show that
.
Calculate the sum of the first five terms:
.
Similarly, assume that
. Substitute back to either of the two original equations to show that
.
Calculate the sum of the first five terms:
.
Answer:
Step-by-step explanation:
<u>Given equation:</u>
<u>The cost of 3.5 lb of sour belts:</u>
<u>Simplify:</u>