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Vaselesa [24]
3 years ago
13

Karen is studying the relationship between the time spent exercising per day and the time spent outside per day and has collecte

d the data shown in the table. The line of best fit for the data is y^=0.16x+45.5. Assume the line of best fit is significant and there is a strong linear relationship between the variables. Exercising (Minutes) 7090110130 Time Spent Outside (Minutes) 57606267 According to the line of best fit, what would be the predicted number of minutes spent outside for someone who spent 68 minutes exercising? Round your answer to two decimal places, as needed.
Mathematics
1 answer:
wariber [46]3 years ago
7 0

Answer:

56.38=

Step-by-step explanation:

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Find the distance from A(-8,-3,-2) and B(-4,8,0) , find ||AB||
RUDIKE [14]

Answer:

||AB|| = 11.8743

Step-by-step explanation:

Distance between two points:

Suppose that we have two points, (x_1,y_1,z_1) and (x_2,y_2,z_2). The distance between them is given by:

D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2+(z_2-z_1)^2}

Distance from A(-8,-3,-2) and B(-4,8,0)

||AB|| = \sqrt{(-4-(-8))^2+(8-(-3))^2+(0-(-2))^2}

||AB|| = \sqrt{4^2 + 11^2 + 2^2}

||AB|| = 11.8743

3 0
2 years ago
Find 4/7 divided by 7/8
Reika [66]
If you divide a fraction by another fraction, this is equivalent to mupltiplying by its inverse:

so \frac{4}{7} divided by\frac{7}{8}

is equivalent to

\frac{4}{7} multiplied by by\frac{7}{8} 

which is


\frac{4}{7}* \frac{7}{8}= \frac{4*7}{7*8}= \frac{4}{8}= \frac{1}{2}

so the answer is \frac{1}{2} which is also 0.5


8 0
3 years ago
−4y−4+(−3)<br> i need help solving this
ololo11 [35]

Answer: The answer is negastive 11 although I am not one thousand percent sure that this is the answer, if it is not the correct anser then please tell me and I can get the corecct anwer for you!

4 0
2 years ago
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A game of chance involves rolling an unevenly balanced 4-sided die. The probability that a roll comes up 1 is 0.21, the probabil
WITCHER [35]

Answer:

2.65 dollars

Step-by-step explanation:

The expected value for a discrete variable is calculated as:

E(x)=x1P(x1) + x2P(x2) + ... + xnP(xn)

Where x1, x2, ... , xn are the possibles values of the variable and P(x1), P(x2), ... , P(xn) are the probabilities of x1, x2, ... , xn respectively.

In this case, the roll can comes up 1, 2, 3 or 4 and you can win 1, 2, 3 or 4 dollars respectively. So, taking into account that they are mutually exclusive events, the probability that the player win 1, 2, 3 or 4 dollars is:

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P(2) = P(1∪2) - P(1) = 0.42 - 0.21 = 0.21

P(3) = P(2∪3) - P(2) = 0.51 - 0.21 = 0.3

P(4) = 1 - P(1) - P(2) - P(3) = 1 - 0.21 - 0.21 - 0.3 = 0.28

Therefore, If you win the amount that appears on the die the expected winning are:

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E(x) = $1(0.21) + $2(0.21) + $3(0.3) + $4(0.28)

E(x) = $2.65

4 0
3 years ago
K12 5 GRADE WORK NEED HELP MARK CROWN
Dvinal [7]

Answer:

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Step-by-step explanation:

13.7 ÷ 2 = 6.85

4 0
3 years ago
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