Answer:
Step-by-step explanation:
12.8/2 = 96 / 2 = 48
the answer is the first one
<h2>have a nice day!</h2>
Hey there Altagraciasouth :)
Significant Figure Question:
**Question 4162 to 3 SF
Explanation:
We first have to look for the third number in 4162. That would be 62!
So we round 62 to the nearest ten. Which gives us 60!
**Answer: 4160
Hope this helped :)
Answers:
- Total equation: x+y = 80
- Legs equation: 2x+4y = 248
- How many ducks? 36
- How many cows? 44
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Further explanation:
- x = number of ducks
- y = number of cows
x+y = 80 is the total equation (ie the head count equation) since we assume each animal has 1 head, and there are 80 heads total.
That equation can be solved to y = 80-x after subtracting x from both sides.
The legs equation is 2x+4y = 248 because...
- 2x = number of legs from all the ducks only
- 4y = number of legs from all the cows only
- 2x+4y = total number of legs from both types of animals combined
We're told there are 248 legs overall, so that's how we ended up with 2x+4y = 248
------------
Let's plug y = 80-x into the second equation and solve for x.
2x+4y = 248
2x+4( y ) = 248
2x+4( 80-x ) = 248
2x+320-4x = 248
-2x+320 = 248
-2x = 248-320
-2x = -72
x = -72/(-2)
x = 36
There are 36 ducks
Now use this x value to find y
y = 80-x
y = 80-36
y = 44
There are 44 cows.
------------
Check:
36 ducks + 44 cows = 80 animals total
36*2 + 44*4 = 72 + 176 = 248 legs total
The answers are confirmed.
Answer:
The anwser is D 0.8
Step-by-step explanation:
Answer:
3.5
Step-by-step explanation:
If you divide x from y on each row, you will always get 3.5
