Which is the slope of a line that is perpendicular to the line represented by the equation x-y = 8
2 answers:
Answer:
D
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Rearrange x - y = 8 into this form by subtracting x from both sides
- y = - x + 8 ( multiply through by - 1 )
y = x - 8 ← in slope- intercept form
with slope m = 1
Given a line with slope m then the slope of a line perpendicular to it is
= -
= -
= - 1 → D
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Answer:
<u>630</u> MP3 players are likely to be defective.
Step-by-step explanation:
Given:
A shipment to a warehouse consists of 4500 MP3 players the manager chooses a random sample of 50 MP3 players and finds that 7 are defective.
Now, to find the MP3 players which are likely to be defective.
Let the defective MP3 players be
Total MP3 players = 4500.
In sample of 50 MP3 players 7 are defective.
Now, setting the proportion:
If, 50 is equivalent to 7.
Then, 4500 is equivalent to
Now, to solve using cross multiplication method:
<em>By cross multiplying we get:</em>
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<em>Dividing both sides by 50 we get:</em>
Therefore, 630 MP3 players are likely to be defective.