Answer:
The number of words that Hugo wrote in the test of Wednesday (74) is at a distance of 1.4545 standard deviations (11) to the right of his mean (58)
Step-by-step explanation:
A normal random variable with mean Mu = 58 and standard deviation sd = 11 is standardized with the transformation (z-score):
Z = (X - Mu) / sd = (X - 58) / 11
For a value of 74 for X, Z = (74 - 58) / 11 = 1.4545 > 0.
The z-score when X = 74 is 1.4545 > 0
This means that the number of words that Hugo wrote in the test of Wednesday (74) is at a distance of 1.4545 standard deviations (11) to the right of his average (58)
Answer:X = 48
Step-by-step explanation:
Solve for
x
by simplifying both sides of the equation, then isolating the variable.
400% is because 125 divided by 500 is 400
Answer:
41 i think i hope this is right
Step-by-step explanation:
Answer:
(5,4)
Step-by-step explanation:
multiply each equation by the value that makes the coefficients of x opposite
(-1) · (4x + 6y) = (-1) · 44
4x + 2y = 28
simplify
-4x - 6y = -44
4x + 2y = 28
add the two equations together to eliminate x from the system
-4x - 6y = -44
<u>+ 4x + 2y = 28</u>
-4y = -16
divide each term by -4
y = 4
substitute the value for y into one of the original equations, then solve for x
-4x - 6y = -44
-4x - 6(4) = -44
-4x - 24 = -44
+ 24 + 24
-4x = -20
divide by -4
x = 5
so, since x = 5 and y = 4 ....
the solution to the independent system of equations can be represented as a point.
(5,4)
hope this helps! :)
