Answer:
21
Step-by-step explanation:
PEDMAS
P - parentheses
E - exponent
D - division
M - multiplication
A - addition
S - subtraction
2 + 3 - 4 + (5 x 4)
P - parentheses.
(5 × 4) = 5 × 4 = 20
2 + 3 - 4 + 20
A - Addition and S - subtraction (left to right)
2 + 3 = 5
5 - 4 + 20
5 - 4 = 1
1 + 20 = 21
Answer:
A) True
Step-by-step explanation:
If points Pand Q are contained in a plane, then Po is entirely contained in that plane.
Answer:
4 and 12
Step-by-step explanation:
a = young
b = old
b = 3a, a+b =2a+8 => a = 4, b = 12
Answer:
Method A.
Step-by-step explanation:
For solving this question we need to find out the z-scores for both methods,
Since, the z-score formula is,
Where, is mean,
is standard deviation,
Given,
For method A,
Thus, the z score for 34 is,
While, for method B,
Thus, the z score for 34 is,
,
Since,
Hence, method A is preferred if the procedure must be completed within 34 minutes.
Answer: B
Step-by-step explanation: