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solmaris [256]
3 years ago
12

Could someone please check my work? We're working on linear regression.

Mathematics
2 answers:
o-na [289]3 years ago
7 0
It looks alright to me but i would check it again see if you missed anything <span />
ioda3 years ago
6 0
It looks good. nice handwriting
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43 milk jugs are in a fridge with 11 that are spoiled. 5 jugs are randomly selected. what are the odds that the first two are go
malfutka [58]

Answer:

0.85% probability that the first two are good and the last three are spoiled

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the first two jugs is not important, as is not the order in which the last three are selected. So we use the combinations formula to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

Desired outcomes:

2 spoiled, from a set of 43-11 = 32.

3 spoiled, from a set of 11.

So

D = C_{32,2}*C_{11,3} = \frac{32!}{2!(32-2)!}*\frac{11!}{3!(11-3)!} = 982080

Total outcomes:

5 jugs from a set of 43.

T = C_{43,5} = \frac{43!}{5!(43-5)!} = 115511760

Probability:

p = \frac{D}{T} = \frac{982080}{115511760} = 0.0085

0.85% probability that the first two are good and the last three are spoiled

4 0
3 years ago
Which expression is equivalent to (q^4)^-3/q^-15 for all values of q where the expression is defined?
vodka [1.7K]

Answer: (h)q^3

Step-by-step explanation:

4 0
3 years ago
How do you go about doing this surface area problem?
hammer [34]
Break it down into 2-Dimensional shapes. Then add the areas together.

From the picture you can see;
front & back rectangles are 2*(4 x 8) = 64 m²
2 side rectangles are 2*(4 x 12) = 56 m²
2 triangular front & back pieces are (1/2)*8*3 = 12 m²
2 roof rectangles are 2*(5 x 12) = 120 m²

total Surface area = 64 m² + 56 m² + 12 m² + 120 m²
= 252 m²

For the volume; break it up into 3-dimenssional shapes and add the volumes together.

From the picture you can see;
Rectangular box volume is 4 x 8 x 12 = 384 m³
Triangular roof volume is area of front triangle multiplied through the length. (1/2)*8*3* 12 = 144 m³

Total volume = 384 m³ + 144 m³
= 528 m³
5 0
3 years ago
5x^(2)+2 in verbal form
USPshnik [31]

Answer:

Five x squared plus two

Step-by-step explanation:

An exponent of two is always pronounced as "squared"

8 0
3 years ago
The diameter of a circle is 22 miles. What is the circle's area?
Elodia [21]
Answer:
379.94

Explanation :
check out my attached work
Hope it helps, let me know if you have any questions !
Have a nice rest of your day :)

4 0
2 years ago
Read 2 more answers
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