Answer:
x=6
Step-by-step explanation:
5x+4+8x-3=79
=>13x=79-4+3
=>13x=78
=>x=78/13
=>x=6
Answer:
-4(8)=x^2-9x+12
-32=x^2-9x+12
Step-by-step explanation: is this what u want us to do?
Answer:
B. The other solution to function
is
.
Step-by-step explanation:
From Algebra, we remember that quadratic functions of the form
has solutions of the form:
, where both are complex if and only if
.
Hence, if one solution of the quadratic function is
, then the other solution is
. The correct answer is B.
Answer:
The value of the test statistic is 
Step-by-step explanation:
The null hypothesis is:

The alternate hypotesis is:

Our test statistic is:

In which X is the sample mean,
is the value tested at the null hypothesis,
is the standard deviation and n is the size of the sample.
In this problem, we have that:

Then



The value of the test statistic is 
Answer:
Step-by-step explanation:
Remember simple multiplication? Write the problem with 17 at the bottom:
8
* 1 7
----------
5 6 <-- this is 8*7
8 0 <-- this is 8*10 [we sometimes just shift and don't write the 0]
-------
1 3 6
So, 8*17 is the same as 8*10 + 8*7.