X = # of boys, y = # of girls
x + y = 10 --> y = 10-x
2.25y + 1.75x = 20.50
2.25(10-x) + 1.75x = 20.5
22.5 - 2.25x + 1.75x = 20.5
-0.5x = 20.5-22.5
-0.5x = -2.0
÷ -.5 ÷ -.5
x = 4 --> 4 boys, so 10-4 = 6 girls
Answer:
Step-by-step explanation:
Each package holds 24 so you would use the equation n = 24p
which means the number of lightbulbs = 24 times the number of packages
so 1 package = 24
3 packages = 72
10 packages = 240
oh and part B is B
Answer:
W + D = 661 cost of pair
W = .61 D cost of washer
1.61 D = 661
D = 413 cost of drier
Check:
W = 413 - .39 * 413 = 252
W + D = 252 + 413 = 665 (within rounding)
Answer:
The answer is D. The federal Reserve is the central banking system of U.S.A
Answer:
Step-by-step explanation: Area of triangle is base x height divided by 2. So do 8 + 8 to get the base which is 16m. 16 x 8 = 128/2 = 64 m^2
Area of a 1/4 circle is PI Radius ^2 then divided by 4. So
*8^2 = 201.06/4 = 50.265 m^2
So to get the area of the entire figure you need to find the perimeter of the figure. So you should use the perimeter formula for each shape and then add all your perimeters of each shape. 1/4 Circle perimeter formula is C=2πr/4 . Perimeter of a square is P = 4a. Perimeter of a triangle is P =
a + b + c . Circle solving 50.27/4 = 12.5675 m^2. Triangle solving 8 + 8 + 16 = 32 m ^2 . Square solving 4 x 8 = 32 m ^ 2 .
This was so confusing and I dont know if this helps or not but I tried my hardest!