P (Jack) = 4 / 52 = 1/13
P(Queen) = 4/52 =1/13
P(jack or queen) = 1/13 + 1/13 = 2/13
It could be a proportion
24:36=42:x
make into fractions
24/36=42/x
2/3=42/x
multiply both sides by 3x
2x=126
divid oth sides by 2
x=63
the other number is 63
24:36=42:63
Answer:
The speed of the submarine is 5 mph
Step-by-step explanation:
Let x represent the speed of the submarine.
A submarine left Hawai'i 2 hours before an aircraft carrier. If the aircraft carrier travelled for 9 hours and after this time, the vessels were 280 miles apart, it means that submarine travelled for 9 + 2 = 11 hours and the total distance covered by submarine and the aircraft is 280 miles.
Distance = speed × time
Distance covered by the submarine would be
11 × x = 11x
The aircraft carrier traveled at 25 mph. Distance covered by the aircraft would be
25 × 9 = 225
Therefore,
225 + 11x = 280
11x = 280 - 225 = 55
x = 55/11 = 5mph
$163,500
5000(0.09) x 30 = 13,500
5000 x 30 = 150,000
Altogether 163,500
Definition of negative exponent:
![a^{-n} = \dfrac{1}{a^n}](https://tex.z-dn.net/?f=%20a%5E%7B-n%7D%20%3D%20%5Cdfrac%7B1%7D%7Ba%5En%7D%20)
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