Answer:
b. 720
Step-by-step explanation:
Answer:
The total number of figurines Janet has = 29
Step-by-step explanation:
Let the number of figurines Janet has = m
So, the Number of figurines marge has
= 3 x (Number of figurines Janet has)
or, Marge has 3 x m figurines.
Also, We are given that Marge has 87 figurines.
⇒ 3 x m = 87
or, 
or, m = 29
Hence, the total number of figurines Janet has = m = 29
Answer: x = 7
Step-by-step explanation:
x(x-1) = 42 (Area)
By trial and error method let's take x = 7
We get
7(7-1) = 42
7 x 6 = 42
42 = 42
Therefore LHS = RHS
Therefore it's 7
Hope this helps
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Answer:
- 40 popcorns and 90 pretzels sold.
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Let the number of popcorns is x and pretzels is y.
Set up equations:
- x + y = 130
- 2.5x + 2y = 280
Solve by elimination, multiply the first equation by 2 and subtract from the second equation:
- 2.5x + 2y - 2x - 2y = 280 - 2*130
- 0.5x = 280 - 260
- 0.5x = 20
- x = 20/0.5
- x = 40
Find y:
- 40 + y = 130
- y = 130 - 40
- y = 90
Answer: 3rd answer choice; A and C
Step 1 is to locate the point (1,2). You start at the origin, then move 1 unit to the right and 2 units up. Alternatively, you can draw a vertical line through 1 on the x axis and a horizontal line through 2 on the y axis. The horizontal and vertical line cross at (1,2)
Step 2 is to then determine which lines go through (1,2). The two lines in question are line A and line C. So the intersection of line A and line C is the point (1,2). This point satisfies the equations that make up these lines. So that is why it is considered a solution to just these two equations only (ignore the other lines).
