I think its the 3rd one but im not really sure its just based on my understanding
Answer:
We need to find the first term. We can use the formula
an = a1 + d(n - 1)
to solve for a1. We already know the 12th term, a12, common difference, d, and nth sequence, n.
a12 = -36
d = -4
n = 12
-36 = a1 - 4(12 - 1)
-36 = a1 - 44
8 = a1
The first term is 8. Therefore, your formula is
an = 8 - 4(n - 1)
an = -4n + 12
Then use this formula to graph.
n is the independent variable.
an is the dependent variable.
Your graph will be a line.
n | an
___________
1 8
2 4
3 0
4 -4
5 -8
6 -12
Step-by-step explanation:
give me brainliest.
Answer:
CARLA
Step-by-step explanation:
<u>STEP 1:</u> BOBBY: FIRST YOU MULTIPLY 1.12 BY $2.50, AND YOU GET $2.80. $2.80 IS HOW MUCH BOBBY SPENT.
<u>STEP 2:</u> CARLA: YOU HAVE TO DO 1.4 TIMES $2.20, AND YOU'LL GET $3.08.
THEREFORE, CARLA SPENT MORE MONEY
Answer:
Let x be your first alloy
2/5x+7/10(30-x)=1/2(30)
4x+210-7x=150
3x=60
x=20
So, you need 20 lbs of the first alloy, and 10 parts of the second to make 30 lbs of half iron and half silver alloy
I believe i can help:
the formula for right triangle area:
1/2bh
plug in the numbers that are given:
1/2(15)(8)
simplify:
1/2(120)
60 = triangle area
the formula for a rectangle:
bh
plug in the numbers that are given:
(19)(8)
simplify:
152 = rectangle area
now add the two shape’s areas and you have your final answer!
152 + 60 =
212ft