This is a simultaneous equation
Rearrange the second to give
x - y = 1
Add the two equations
(x + y) + (x - y) = 5 + 1
2x = 6
x=3
Substitute 3 into either equation
3 - 1 = y
y = 2
6-3a+10b^2-2a-4b^2-3
-5a+6b^2+3
Let y=total cost
We have 4 friends that paid an extra $6 each and 4 friends that paid regular admission.
Friends that paid extra= 4(x+6)
Friends that paid regular= 4x
Now we need to add those together.
y= 4(x+6) + 4x
Distribute the 4
y= (4*x) + (4*6) +4x
y=4x + 24 +4x
y=8x + 24
Hope this helps!! :)
Answer and Step-by-step explanation:
What does ^2 mean? Well, first let's find out what ^ means, this is "squaring". So, ^2 means two is squared by another number. Such as 6^2. Six is squared by two.
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Answer:
4 : 1 or 4 times
Step-by-step explanation:
V of sphere is
V = 4/3 π r³
then we can compare both of them dirextly
Vs : Vhs
4/3 π r³ : ½ (4/3 π (2r)³)
4/3 π r³ : ½ * 4/3 π 8r³
1 : ½ * 8
1 : 4
Vhs : Vs = 4 : 1
so the volume of hemisphere is 4 times bigger than the sphere.