Answer:
7.5 gallons
Step-by-step explanation:
We know that 1 gal = 3.8 L, and we have 28.5 L. So, set up a proportion:
1 gal / 3.8 L = x gal / 28.5 L , where x is the number of gallons the cafeteria made
Cross-multiply:
1 * 28.5 = 3.8 * x
28.5 = 3.8x
Divide by 3.8:
x = 28.5 / 3.8 = 7.5 gallons
<em>~ an aesthetics lover</em>
Answer:
1/5
Explanation:
For every two minutes, 10 items get sold. 2/10 is equivalent to 1/5
Answer:
A : 4x+5x=180
Step-by-step explanation:
They form a linear pair which equals 180.
Answer: i. Cost of adult ticket = $ 30
ii. Cost of child ticket = $20
Step-by-step explanation:
Define variables:
Let x= cost of 1 adult tickets , y= cost of 1 child tickets.
Form linear equations:
5x+3y = 210 (i)
2x+5y= 160 (ii)
Multiply (i) by 2 and (ii) by 5
10x +6y = 420 (iii)
10x+25y = 800 (iv)
Eliminate (iii) from (iv)
19y = 380
⇒ y= 20
Put this in (i)

Hence, Cost of adult ticket = $ 30 and Cost of child ticket = $20
For full circle area is π * R² [here R = radius],
for a sector of circle with angle β, area will be = (β/2) * R², β is in radian,
here let β = 22.5° = (π * 22.5/180) = π/8 radian,
now [(π/8)/2] * R² = 9π, [π/16] * R² = 9π
R² = 9 * 16 = 144,
R = √144 = 12 m