Answer:
P( Z <= -1) = 0.1587
Step-by-step explanation:
ok, mean u = 79
s = 7
find P( x <= 72)
P( (x - 79)/7 <= (72 - 79)/7 ) = ?
P( Z <= -1) = 0.1587 from Z-scores table
Answer:
x<15/4
Step-by-step explanation:
4x-3<12
4x<12+3
4x<15
x<15/4
Answer:
Step-by-step explanation: 50r - 6= 82r-70
Add 50r to 82r which equals to 132 r
Now add the the 70 to the left side so -6+70 should equal 76.
Now it should look like this 76=132r
To get the value of r you have to divide 76/132 on both sides of the equation and your answer should be 0.57=r
Answer:
It depends what x equals.
Step-by-step explanation:
There's plenty of resources on places like Khan Academy to help.
After the tax and the tip are counted, we conclude that each friend must pay $30.
<h3>How much should each person pay?</h3>
We know that the meal cost is $72.50.
Now, there is a 6.75% sales tax and a 15% tip on the waiter (we assume that the tip is based on the total meal cost, after the tax is applied).
Then the total meal cost is:
C = $72.50*( 1 + 6.75%/100%) = $72.50*(1 + 0.0675) = $77.39
Now we also need to add the tip, which is a 15% of that, so the total cost with the tip included is:
C' = $77.39*(1 + 15%/100%) = $88.998 = $90
(Where we rounded up).
Then, if there are 3 friends, each one must pay:
$90/3 = $30
Each friend must pay $30.
If you want to learn more about taxes:
brainly.com/question/1775528
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