the answer is 64 you just add
1x4=4
2x4=8
3x5=15
4x4=16
5x1=5
7x1=7
9x1=9
To calculate P(at least one valve opens), we can find 1 - p(no valves open).
This is equal to 1 - (0.05)^5, or 0.9999996875.
P(at least one valve fails to open) is equal to 1 - p(all valves open and none fail). This is 1 - (0.95)^5, or 0.2262190625.
Download photomath it will give u the answer
Explanation:
Discount = 20%
The cost of 5 notebooks = $10
The cost of 1 notebook before applying discount = $10/5 = $2
Applying the discount on the original price:
Discount = $10 × 20% = 10 × 0.20
Discount = $2
The sales price of the 5 notebooks = original price - discount
The sales price of the 5 notebooks = $10 - $2
The sales price of the 5 notebooks = $8
The sales price of 1 notebook = $8/5
The sales price of 1 notebook = $1.6
The amount saved per notebook = The cost of 1 notebook before applying discount -
$2 -
