It looks to be D but if you still need help I'd recommend checking out Desmos sure it is a graphing calculator but it may be easier to understand it with that.
Answer:
D. Divide both sides by - 8
Step-by-step explanation:
-8x = 312
x = 312/(-8)
x = - 39
Answer:
If the proportions of all people who carry the trait are the same for both populations, the probability of observing a sample difference of at least 0.22 is 0.03
Step-by-step explanation:
Given the hypothesis :
H0 : pW = pX
Ha : pW > pX
W - X = 0.22
Pvalue = 0.03
Since the Pvalue gives the probability of obtaining a value or result figure which is atleast as extreme as the observed value. The observed value here is 0.22 resulting from the difference in W and X (W - X).
This can thus be interpreted to mean ; going by the Null (difference between W and X) ; the probability of obtaining a value of atleast 0.22 as difference is 0.03
Answer:
Option (4)
Step-by-step explanation:
Slope a line passing through two points
and
is given by,
m = 
Since, blue line is passing through two points (-4, -2) and (0, 4),
Slope of the blue line = 
= 
Similarly, green line is passing through two points (-4, 1) and (0, -2),
Slope of the green line = 
= 
Since, 
Neither these slopes are opposite reciprocals.
Therefore, both the lines are neither parallel nor perpendicular.
Option (4) will be the correct option.
Question:
I thought of a number, I added 1 3/4 to it, then I multiplied the result by 2 2/11 and I got 8. What was my number?
Answer:
The number is 
<em></em>
Step-by-step explanation:
Let the number be x.
Analyzing the steps, 1 at a time
Add
to x
This implies:

Multiply by
to result in 8
This implies:

Now, we solve for x
Convert mixed numbers to improper fractions


Multiply through by 11


Divide through by 24


Multiply through by 4




Make 4x the subject



Solve for x



<em>Hence, the number is </em>
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