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Otrada [13]
3 years ago
14

selling baseball cards for $4 a card and buying baseball cards for $6 a card. If you started the day with $200, how much money d

o you have at the end of the day if you sold c baseball cards and bought b baseball cards?
Mathematics
1 answer:
umka2103 [35]3 years ago
5 0

200 + 4c - 6b

Since selling something is $4, and buying is $6, the equation should look like this.

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Which of the following are true about regression with one predictor variable (often called "simple regression")? Check all that
AfilCa [17]

Answer:

<h3>A. The slope describes the amount of change in Y for a one-unit increase in X .</h3><h3>B. The regression equation is the line that best fits a set of data as determined by having the least squared error.</h3>

Step-by-step explanation:

In statistics, linear regression is a analysis we do to describe the relationship between two variables. With this study, we pretend to know if there's a positive or negative correlation between those variables, if that correlation is strong or weak.

In a linear regression analysis, we modeled the data set using a regression equation, which is basically the line that best fits to the data set, this line is like the average where the majority of data falls. That means choice A is right.

When we use linear equations, we need to know its characteristics, and the most important one is the slope, which is the ratio between the dependent variable and the independent variable. Basically, the slope states the unit rate between Y and X, in other words, it states the amount of Y per unit of X. That means choice B is correct.

Therefore, the correct answers are A and B.

4 0
3 years ago
Pls!! I’m stuck on this question
Elena L [17]

Answer: 4x4=16, 6x6x6x6=1296, 1296+16=1312

the answer is 1312

Step-by-step explanation: find the area. 4x4, 6x6x6x6, the 3 is only there to throw you off you dont do anything with the 3

i think thats right

4 0
3 years ago
Marcus wants to determine how age and weight are related to exercise preference in his town. He selects a simple random sample o
mario62 [17]

Answer:

He will be unable to tell whether a difference in exercise preference is related to a difference in age or to a difference in weight

Step-by-step explanation:

age could be a factor to exercise as well as weight so both affect the outcome so he has two samples

3 0
3 years ago
The population of deer in a state park in 1985 was 46,000. The population in 1990 was 72,000. What is the rate of change of the
Vesnalui [34]

Answer:

5200 deer/year

Step-by-step explanation:

  • rateofchange=changeinpopulation \div changeinyears
  • we will call the rate of change, the slope of the function
  • slope=(72000-46000)deer\div (1990-1985)years\\=26000deer\div 5years\\=(\frac{26000}{5}) deer/year\\==5200deer/year
3 0
2 years ago
What value of c is the rational expression below equal to zero? x-4/x-6
RSB [31]

Answer: x=4

Steps: (I am assuming your question has a typo in it and by "c" you meant "x")

The rational expression equals zero

\frac{x-4}{x-6}=0

only when the numerator equals 0 (the denominator cannot ever be zero):

x-4 = 0 \\x = 4

and that happens only for x=4


3 0
3 years ago
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