A random variable is normally distributed with a mean of 25 and a standard deviation of 5. if an observation is randomly selecte
1 answer:
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The solution for the given equations x + 3y = 5 and x - 3y = -1 are x=2 and y=1.
Step-by-step explanation:
The given is,
......................................(1)
....................................(2)
Step:1
By elimination method,
Subtracting Equations (1) and (2),
( - )
( ) + (
) = (
)
= 6
= 1
Step:2
Substitute the value of y in equation (1),
+ ( 3 × 1 ) = 5
= 5-3
= 2
Step:3
Check for Solution,
Substitute the values of x and y in Eqn (1),
2 + ( 3 × 1 ) = 5
5 = 5
Result:
The solution for the given equations x + 3y = 5 and x - 3y = -1 are x=2 and y=1, by elimination method.
Answer: first option.
Step-by-step explanation:
The formula you must use to calculate the volume of the figure shown is the following:
Where B is the area of the base and H is the height.
Assuming that the base of the pyramid is a square, you have that B is:
Substitute values into the formula, Then you obtain: