Answer:
1. 30
2. 370
3. 470
4. 100
Step-by-step explanation:
for one, add the amount of students that play sports and subtract it from 500. for two, add the number of people that only play soccer and only play basketball. for three, take away the 30 people from the 500 kids that don't play. for four, it says 100 people play both.
Answer:
b, c, d
Step-by-step explanation:
Answer:
Nope. Does not satisfy pythagoras theorem
Step-by-step explanation:
72 squared does nit equal 45 squared plus 56 squared
Answer:
a
The average cost is
b
The standard deviation of cost is
Step-by-step explanation:
From the question we are told that
The cost of replacing the two component is C = 50 + 2 X + 4 Y
The variance of X is mathematically represented as
V(X) =
Substituting values
The variance of Y is mathematically represented as
V(Y) =
Substituting values
The average of replacing the two component is
substituting value
The variance of replacing the two component is
Note: The variance of constant is zero
and X and Y are independent
=>
substituting values
=>
=>
=>
The standard deviation is
substituting values
Answer:
The angle is 35
Step-by-step explanation:
The angles are vertical angles, so they are equal
3x-4 = 2x+9
Subtract 2x from each side
3x-2x-4 = 2x+9-2x
x-4 = 9
Add 4 to each side
x-4+4 = 9+4
x=13
But it asked for the measure of the angle
2x+9
2(13)+9
26+9
35