Answer:
Step-by-step explanation:
solution 1 :
adult : 7 - x
child : x
total spend : 54.50 = (7 - x) * 9.5 + x * 6.5
we solve : 54.50 = 66.5 - 3x , x = 4
solution 1 :
adult : y
child : x
x + y = 7.......(1)
total spend : 54.50 = y * 9.5 + x * 6.5........(2)
we solve : x= 4 , y = 3
Volume of a sphere = 4/3pi*r^3
diameter/2 = radius
Radius = 12/2 =6
Volume of sphere = 4/3pi*6^3 = 288pi
Answer:
1. 25 cents, 80 cents
25/5 = 5 and 80/5 = 16
Ratio: 5:16
Fraction: 5/16
2. 210 celsius , 30 celsius
210/30 = 7 and 360/30 = 12
Ratio: 7:12
fraction: 7/12
3. 250 cm , 1 m
250 cm = 2.5 m
Ratio: 2.5/1
Fraction 5/2
4. 80 cents , 1.20 pounds
1.20 pounds = 120 cents
Ratio: 2:3
Fraction: 2/3
The greatest common factor is 5x^3y
Convert this to an exponent.
So, x^4/3=16
Take the 4th root of both sides.
X^1/3=2
Then cube both sides.
X=8
Your answer is 8.