Answer:
The ratio of red marbles to yellow marbles will be: 2 : 20 or 1 : 10
Step-by-step explanation:
As from the information
- The ratio of red marbles to blue marbles is 1 : 4.
- The ratio of blue marbles to yellow marbles is 2 : 5.
Multiply the ratio of red to blue marbles with 2.
1 : 4 = 1 × 2 : 4 × 2 = 2 : 8
Multiply the ratio of blue marbles to yellow marbles with 4.
2 : 5 = 2 × 4 : 5 × 4 = 8 : 20
Now the ratio of red : blue : yellow marbles will be:
2 : 8 : 20
Therefore, the ratio of red marbles to yellow marbles will be:
2 : 20 or 1 : 10
Keywords: ratio, fraction
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Answer:
a. 277.3 m²
b. $307.86
Step-by-step explanation:
a. Area of the wall to be painted = area of rectangle - area of triangle
= L × W + ½×a×b×sin θ
L = 17 m
W = 14 m
a = 8.7 m
b = 9.5 m
θ = 72°
Plug in the values into the equation
Area of the wall = (17×14) + (½*8.7×9.5×sin 72)
Area of the wall = 238 + 39.3024105
Area of the wall to paint ≈ 277.3 m²
b. 20 liters of paint of 1 container cost $21.99
If 1 liter of paint covers 1m², therefore,
277.3 m² will need = 277.3 × 1 = 277.3 liters of paint.
20 liters = 1 container of paint
277.3 liters = 277.3/20 = 13.865 ≈ 14 containers
1 container = $21.99
14 containers = 21.99 × 14 = $307.86
Expand 8(5-r)/5=-2r as indicated: 40 - 8r
----------- = - 2r
5
Multiply both sides by 5, obtaining 40 - 8r = - 10r
Combine like terms: 40 = - 2r
Divide both sides by -2: -20 = r
The solution to 8(5-r)/5=-2r is -20. Verify this by subbing -20 for r in the given equation.
Answer:
1.48645ft
Step-by-step explanation:
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Answer:
like 14
Step-by-step explanation:
or something id. K
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