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jonny [76]
2 years ago
6

What type of line is the graph of y = 7? (1 point)

Mathematics
2 answers:
koban [17]2 years ago
6 0

The answer is option B "Horizontal." Using the formula solving slope you would see that the line is horizontal remember if it's vertical it's undefined so solving the graph it would make the line that's horizontal. You could also write the equation like this:

  • y = 0x + 7
  • y = 7
  • Graph wise creating a horizontal line.

Hope this helps!

Tom [10]2 years ago
4 0
So bc. given y=7 from this result x=0 

so in this case this line will be Horizontal sure 
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Answer:

C. 5 weeks.

Step-by-step explanation:

In this question we have a random variable that is equal to the sum of two normal-distributed random variables.

If we have two random variables X and Y, both normally distributed, the sum will have this properties:

S=X+Y\\\\\ \mu_S=\mu_X+\mu_Y=30+60=90\\\\\sigma_S=\sqrt{\sigma_X^2+\sigma_Y^2}=\sqrt{10^2+20^2}=\sqrt{100+400}=\sqrt{500}=22.36

To calculate the expected weeks that the donation exceeds $120, first we can calculate the probability of S>120:

z=\frac{S-\mu_S}{\sigma_S} =\frac{120-90}{22.36}=\frac{30}{22.36}=1.34\\\\P(S>120)=P(z>1.34)=0.09012

The expected weeks can be calculated as the product of the number of weeks in the year (52) and this probability:

E=\#weeks*P(S>120)=52*0.09012=4.68

The nearest answer is C. 5 weeks.

6 0
3 years ago
Can u pls help me with this question ​
Romashka [77]

Answer: It would be B 9/50

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8 0
3 years ago
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