4 sides are on a rectangle
You will have a better chance of winning because your chance before you opened the first door was 1/3 (since there was 3 doors) but now, you have 2 doors left, so it is a 50% chance that you will win.
Answer:
AC=12
Step-by-step explanation:
If vertices A and B lie on a diameter of the circle means that angle of triangle on the vertice C is 90, si this is right triangle. Now we can use Pitagora’s theorem to find AC.
AB^2=AC^2+BC^2
13^2=AC^2+5^2
169=AC^2+25
AC^2=169-25=144
AC=12
7=4b-5
7+5=4b
12=4b
b=3
GI=5(3)+1 (its GI= 5 times (3)+1 by the way)
GI=15+1
GI=16
well... this is my answer and I hope this helps!! :)
Answer:
3.6 hours
Step-by-step explanation:
To determine the time needed if they are working together, we use the formula
1/Ta + 1/Tb = 1 Tc
where Ta is the the time for the first item working alone
Tb is the time for the second item alone
Tc is the time for them working together
1/9 + 1/6 = 1/Tc
I multiply by 54Tc to clear the fractions
54Tc (1/9 + 1/6) = 1/Tc *54Tc
6Tc + 9 Tc = 54
Combine like terms
15Tc = 54
Divide each side by 15
15 Tc /15 = 54/15
Tc =3.6 hours