Answer: D
Step-by-step explanation:

Let's take one of the equations and solve for a variable to use the substitution method.

Now replace this in the first equation.

Separate the terms.

Solve 20/5

Subtract 4 from both sides to isolate y.


Solve the difference.



Multiply by the reciprocal or the inverted fraction that is next to y to isolate it.


Now, in order to find x, replace y in any of the two equations.

2 - 0.002= 1.998
hope this helps
Step-by-step explanation:
<em>Check the attached file for solution and </em>
<em>simulation screen shot</em>
R-Code:
Sample mean
sd = 60 Population Standard deviation
n = 10 Sample size
conf.level = 0.99 Confidence level




Answer:
C. 4000
Step-by-step explanation:
let the number of females be : x
number of males be: 10000-x
(10000-x)*105/100 + x*106/100 =10540
10000*105/100 - 105x/100 + 106x/100 =10540
100*105 + x/100 =10540
x/100 =10540-10500
x =40*100
x =4000
Hope this helps!
Answer:
the answer is d because 0.978 cool number like yaaaa.
Step-by-step explanation: