Answer:
A≈20.43
Step-by-step explanation:
Answer:
a) No
b) 42%
c) 8%
d) X 0 1 2
P(X) 42% 50% 8%
e) 0.62
Step-by-step explanation:
a) No, the two games are not independent because the the probability you win the second game is dependent on the probability that you win or lose the second game.
b) P(lose first game) = 1 - P(win first game) = 1 - 0.4 = 0.6
P(lose second game) = 1 - P(win second game) = 1 - 0.3 = 0.7
P(lose both games) = P(lose first game) × P(lose second game) = 0.6 × 0.7 = 0.42 = 42%
c) P(win first game) = 0.4
P(win second game) = 0.2
P(win both games) = P(win first game) × P(win second game) = 0.4 × 0.2 = 0.08 = 8%
d) X 0 1 2
P(X) 42% 50% 8%
P(X = 0) = P(lose both games) = P(lose first game) × P(lose second game) = 0.6 × 0.7 = 0.42 = 42%
P(X = 1) = [ P(lose first game) × P(win second game)] + [ P(win first game) × P(lose second game)] = ( 0.6 × 0.3) + (0.4 × 0.8) = 0.18 + 0.32 = 0.5 = 50%
e) The expected value 
f) Variance 
Standard deviation 
Answer: The number 5 in 56 is in the tenths place.
Answer:
Step-by-step explanation:
To find the breadth use Pythagorean theorem
Breadth² = diagonal² - length²
= 34² - 30²
= 1156 - 900
= 256
Breadth = √256 = 16 cm
Breadth = 16 cm
Perimeter = 2*(length + breadth) = 2*(30 + 16) = 2*46 = 92 cm
Area = length * breadth = 30 *16 = 480 cm²
4x+<span><span>7x</span><span>(12)</span></span>+12=<span><span>1008−<span>4x</span></span>+<span>12
</span></span>88x+12=<span><span>−<span>4x</span></span>+<span>1020
</span></span><span><span><span><span>88x</span>+12</span>+<span>4x</span></span>=<span><span><span>−<span>4x</span></span>+1020</span>+<span>4x</span></span></span><span><span><span>92x</span>+12</span>=<span>1020
</span></span><span><span><span><span>92x</span>+12</span>−12</span>=<span>1020−12</span></span><span><span>92x</span>=<span>1008
</span></span><span><span>92x</span>92</span>=<span><span>1008<span>92
</span></span></span>x=<span><span>252/23</span></span>