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statuscvo [17]
3 years ago
13

How many solutions can a quadratic-linear system have?

Mathematics
2 answers:
Contact [7]3 years ago
4 0

Answer:

C

Step-by-step explanation:


Paul [167]3 years ago
3 0

Answer:

C

Step-by-step explanation:

This type of system can have one solution, two solutions, or no solutions. Graph both equations on the same coordinate plane.

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Most dermatologists recommend using sunscreens that have a Sun Protection Factor (SPF) of at least 30. One of the authors wanted
Basile [38]

Answer:  We are 95% confident that the mean SPF level of sunscreen used by all Cal Poly students is between 29.0813 and 40.0187.

Step-by-step explanation:

Given : Significance level : \alpha: 1-0.95=0.05

Sample size : n= 52 , which is a large sample (n>30), so we use z-test.

By using z-value table,

Critical value: z_{\alpha/2}=1.96

Sample mean : \overline{x}= 34.55

Standard deviation : \sigma= 20.12

The confidence interval for population means is given by :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

i.e. 34.55\pm(1.96)\dfrac{ 20.12}{\sqrt{52}}

=34.55\pm5.46867829455\\\\\approx34.55\pm5.4687\\\\=(34.55-5.4687, 34.55+5.4687)=(29.0813,\ 40.0187)

Now, the 95% confidence interval for the ppopulation mean = . (29.0813, 40.0187)

Hence, We are 95% confident that the mean SPF level of sunscreen used by all Cal Poly students is between 29.0813 and 40.0187.

7 0
3 years ago
Find the missing values in the ratio table. Then write the equivalent ratios of cost to time.
max2010maxim [7]

Answer:

337.5

Step-by-step explanation:

50÷2 = 25

75÷2 = 25

13.5×25 = 337.5

8 0
3 years ago
Read 2 more answers
in the equation 6+3y=4y+2 the variable y represents the same value. Is y= 2,3,4 or 5 the solution of this equation? Explain how
kherson [118]
6 + 3y = 4y +2
3y - 4y = 2 - 6
-y = -4
y = 4

hope that helps :)
3 0
3 years ago
Read 2 more answers
Explain why there is a discrepancy between them if there is any?
vredina [299]
This is not a complete question i cannot help.... Sorry about that! If you would like to revise the question i would be happy to help.
5 0
3 years ago
Which is an asymptofe of the graph the function y=cot(x-2π/3)
Shalnov [3]

Hello.


C) x=4π/3


The variable x in the cotangent argument has a unit coefficient, so the period is π, just as it is in the parent function cot(x).


Can you graph y = cot(x)? By subtracting the constant π/6 from the argument, that graph is translated to the right by π/6. Just as with cot(x), it is decreasing everywhere.


Have a nice day



5 0
3 years ago
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