Answer: a = -5
Step-by-step explanation:
First, open up the brackets, and solve it
-12a -42 = -22 -8a. (-6 x 2a, and -6 x 7)
bring the -8a to the left side, so that all the a’s are together
-12a -42 + 8a = -22 (add -42 on both sides like we did with -8a)
-12a + 8a = -22 + 42
solve
-4a = 20
divide -4 on both sides
a = -5
I don't think you're stupid. ^^
Let's take the third term, 8. If n=3, then an should be 8.
The first answer gives 15+2.5*3=22.5.
The second answer gives 15.5+2.5=23.
The third answer gives 15-2.5*3=7.5.
The fourth answer gives 15.5-2.5*3=8.
Choice 4 is correct.
Let's try to actually find the equation on our own.
The equation for an arithmetic series is an=a0+dn where a0 is the term that comes before the first term.
The first term given is 13 and it decreases by 2.5 each time so n=-2.5 and the term that would be before 13 is 15.5.
Thus the equation is an=15.5-2.5n
x= 7/13. Hope I helped you !!!!
<span>Which of the following is not an acceptable form of proof
a. two-column proof
b. indirect proof
c. conjecture proof
d. flowchart proof
</span>....
. It would be an indirect proof that is not an acceptable form of proof. This is because this type proof is not used by any problem (B) is the answer
Answer:
Option C.
Step-by-step explanation:
Let
r-----> the length of each piece
we know that
To find the length of each piece, divide the total length of the rope (22 ft) by the number of pieces (8 pieces)
so
-----> equation that represent the situation
-----> the length of each piece
