There are two equation:
1) From Kim
2) From Daniel
Let:
x be the cost of rolls of plain wrapping paper
y be the cost of rolls of shiny wrapping paper
Kim:
7x + 8y = 140
Daniel:
14x + 7y = 154
<u>Using elimination method:</u>
(7x + 8y = 140) * -2 (Multiplying the equation by -2)
-14x - 16y = -280
-14x -16y = -280
14x + 7y = 154
------------------------------
0x - 9y = -126
9y = 126 (Negative sign cancels from both sides)
y = 126 /9
y = 14
The cost of each shiny wrapping paper is $14.
Now solve x, you pick any two equation to solve for x.
7x + 8y = 140
7x + 8(14) = 140 (You know from above y =14)
7x + 112 = 140
7x = 28
x = 28/7
x = 4
The cost of each plain wrapping paper is $4.
Solution: (4,14)
Answer:
g = (2-x)/3
Step-by-step explanation:
PLS GIVE BRAINLIEST
Answer:
Yes, the sides are in the ration 2:5!
Step-by-step explanation:
Hope this helps.
Answer:
I don't understand the "table." I'll assume x increases over a range of values.
Step-by-step explanation:
See attached table.
Answer:
76
Step-by-step explanation:
Use .25 to represent the 1/4 of a mile.
Since it is a given radius around the boulder, we would treat it as such and find the area of the circle around the boulder.
To do this, you do .25² * 3.14
.0625 * 3.14 = .19625
15/.19625 = 76 and some change, but you need to round down to 76
Answer is 76.
