Answer:
36/4
simplified 9/1
Step-by-step explanation:
Steps:
1. Do a proportion
2/3 times x/12
2. Do 12 times 2=24
3. Divide 24 by 3
4. Your answer is 8 girls
Or you could do it this way
Steps:
1. You could have just multiplied the 2 by a 4 to get 8.12 boys divided by 3 boys is 4. That means you multiple the two by 4 to get the girls.
The length of the shelf is 10 feet while its height is 10 feet.
<h3>Equation</h3>
Equation is an expression used to show the relationship between the sides and angles of a right angled triangle.
Let x represent the shelf length and y represent the shelf height.
The height of the bookcase is 2 feet longer than the length of a shelf. hence:
Also, 22 feet of lumber is available:
From equation 1 and 2:
y = 12, x = 10
The length of the shelf is 10 feet while its height is 10 feet.
Find out more on equation at: brainly.com/question/13763238
Ellie:
Total spending = $36.50
Number of popcorn bags bought = 7
Number of drinks bought = 2
Morgan:
Total spending = $155.50
Number of popcorn bags bought = 9
Number of drinks bought = 14
Part 1:
If
P = Price of one popcorn bag
D = Price of one drink
Then,
For Ellie: 7P + 2D = 36.50
For Morgan: 9P + 14 D = 155.50
Set of equations:
7P + 2D = 36.5 --------(1)
9P + 14D = 155.5 ---- (2)
Part 2:
Solving equations (1) and (2)
Multiply (1) by 7 and subtract (2) from resulting equation;
49P + 14D = 255.5
9P + 14D = 155.5
-------------------------
40P = 100
P = 100/40 = 2.5
From eqn (1),
7*2.5 + 2D = 36.5
17.5 +2D = 36.5
2D = 19
D = 19/2 = 9.5
Therefore,
Bag of popcorn costs $2.50
