Answer:
The pencils cost $0.4 each and the folders $0.5.
Step-by-step explanation:
Since Sally bought six pencils and three folders for $3.9. We have the following expression:
6*penchils + 3*folders = 3.9
And since Henry bought two pencils and five folders for $3.3. We have the following expression:
2*pencils + 5*folders = 3.3
The system of equations is given by:
6*pencils + 3*folders = 3.9
2*pencils + 5*folders = 3.3
In order to solve it we will multiply the second equation by -3 and sum both equations:
6*pencils + 3*folders = 3.9
-6*pencils - 15*folders = -9.9
We have:
-12*folders = -6
folders = 0.5
2*pencils + 5*0.5 = 3.3
2*pencils + 2.5 = 3.3
2*pencils = 3.3 - 2.5
2*pencils = 0.8
pencils = 0.8/2 = 0.4
The pencils cost $0.4 each and the folders $0.5.
Answer:
18 pieces of candy/ounce
Step-by-step explanation:
You would need to divide 252 by 14 to see how many even pieces of candy go into each ounce.
18
Answer:
40
Step-by-step explanation:
dilated by a factor 8 => the area of a rectangle would be (8x8) times of the origin,
5/8 × (8x8) = 5/8 × 64 = 40 ft²
Answer:
8
Step-by-step explanation:
5 = 40
1 = x
Then we multiply by the rule of crisscrossing
5 x X = 40 x 1
5x = 40 then divide both by 5
X = 8