Answer:
Adult plate = 21 , child plate = 11
Step-by-step explanation:
number of adult plate = a , no of child plate = c
$487 = $19a + $8c (equation 1)
32 = a + c (equation 2)
Multiply equation 2 by 8 gets you:
256 = 8a + 8c (equation 3)
Solve equation 1 and equation 3 simultaneously:
487 = 19a + 8c (equation 1) minus
256 = 8a + 8c (equation 3) :
231 = 11a
a = 231/11
a= 21
Substitute a = 21 into equation 2 :
32 = 21 + c
c = 32 - 21
c = 11
So 21 adult plates and 11 child plates were sold.
Answer:
Option A. Ahmed wins the chess game
Step-by-step explanation:
we know that
The probability of Ahmed winning the chess games is 45%
45%=045/100=0.45
The probability of Ahmen winning the checkers games is 0.36
Compare the probability
0.45> 0.36
so
Is more likely that Ahmed wins the chess game
Answer:
1500 * 4 = 6000
Step-by-step explanation:
1500 * 4 = 6000
De Morgan's law: (A∩B)' = A'∪B'
(S₁∩P)' = S'₁ ∪ P'
S'₁={P} ∪ {S₂}
P' ={ S₁} ∪ {S₂}
S'₁ ∪ P' ={P} ∪ {S₂} ∪ { S₁} ∪ {S₂}
(S₁∩P)' = S'₁ ∪ P' = SPACE
