Mathematics, 17.11.2020 19:00 adantrujillo1234
PLEASE ANSWER THIS MY BRAIN IS EXPLODING SAVE ME FROM THESE MATH PROBLEMS!!!
(1)
This table shows the minutes students spent studying for their math exam and the scores they received.
Study time (min) 15 10 30 12 17 43 61 20 8 25 31 40
Exam score 80 78 92 72 75 85 99 83 68 88 86 90
Use a graphing calculator to model the data using a linear function.
What is the correlation coefficient of the data?
β0.75
β0.40
0.49
0.87
2)
A group of people tried joining a gym to see if it would help them to lose weight. This table shows the relationship between the number of weeks since each person joined the gym and the number of pounds they have lost.
Weeks 10 8 6 2 1 5 9 8
Pounds Lost (lb) 4 2.5 0 1 0.5 3 3.5 1.5
Which function best models the data?
y = 0.31x + 0.12
y=β0.43x+2.5
y=β1.5x+5.5
y=0.75xβ3.5
(3)
What is the strength of the association between the two variables in the scatter plot?
The strength of association is?
A. Weak
B. Strong
Answers: 3
Mathematics, 21.06.2019 19:00
Solving systems of linear equations: tables represent two linear functions in a systemΓΆwhat is the solution to this system? 0 (10)0 (1.6)0 18,26)0 18-22)
Answers: 1
Mathematics, 21.06.2019 22:30
At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?
Answers: 1
Mathematics, 21.06.2019 22:40
If f(x) = 3x2 - 2x+4 and g(x) = 5x + 6x - 8, find (f-g)(x).
Answers: 1
Mathematics, 22.06.2019 00:20
Traffic on saturday, it took ms. torres 24 minutes to drive 20 miles from her home to her office. during friday's rush hour, it took 75 minutes to drive the same distance. a. what was ms. torres's average speed in miles per hour on saturday? b. what was her average speed in miles per hour on friday?
Answers: 1
PLEASE ANSWER THIS MY BRAIN IS EXPLODING SAVE ME FROM THESE MATH PROBLEMS!!!
(1)
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