Answer:
b) Both 1,004 and 251 are greater than 10.
Step-by-step explanation:
p = 0.80
n = 1255
In order to use CLT the distribution of
should have np and n(1-p) greater than 10.
np = 1255*0.80
np = 1004
n(1-p) = 1255*0.20
n(1-p) = 251.00
Since Both 1004 and 251 are greater than 10,
Answer:
3. There is a phase shift (Horizontal shift).
Step-by-step explanation:
Use desmos to help you
Graph
y=sin(x+60)
y=sin(x)
Answer:
T= -10.8
Step-by-step explanation:
Ok so I don't know if you have done this in class, but the way my teacher taught me is to isolate the variable. In this case the variable is t, to isolate t we have to do the opposite of what is going on. So it is t divided by 4.5. The opposite of that is multiplying by 4.5. Once you multiply by 4.5 the division and multiplication cancels out leaving you with t.
You are not done; however you have to multiply both sides by 4.5 because if you don't then the sides aren't equal. So when you multiply 2.4 by 4.5, you get 10.8.
However, there is still one final step. You have -t=10.8, so to find t we have to multiply both sides by -1.
This leads t to equal -10.8
Answer:
(-4,-2) and (3,19)
Step-by-step explanation:
We want to solve the system:


We equate the right hand sides:

Rewrite is standard quadratic form.

This simplifies to:

We factor:


When x=3,

Hence a solution is (3,19)
When x=-4,

Another solution is (-4,-2)