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77julia77 [94]
3 years ago
7

P(x)= 3x^5+2x^4+x^3-10x-8

Mathematics
1 answer:
erik [133]3 years ago
3 0
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X
12345 [234]

Answer: 28.35\ minutes

Step-by-step explanation:

Let be "x" the time in minutes a 150-pound person must walk at  4 mph to use at least 190 calories.

 The amount of calories that a 150-pound person uses  in 1 minute when walking at a speed of 4 mph is:

Calories\ per\ minute=6.7

Therefore, knowing this, we can write the following proportion:

\frac{1}{6.7}=\frac{x}{190}

Finally, we must solve for "x" in order to find its value.

Multiplying both sides of the equation by 190, we get this result:

(190)(\frac{1}{6.7})=(\frac{x}{190})(190)\\\\x=28.35

3 0
3 years ago
Can someone please read this?? I keep trying to but I get distracted! ​
Alex

Answer:

it translates to something i can't say on here ;)

5 0
3 years ago
To test for the significance of a regression model involving 3 independent variables and 51 observations, the numerator and deno
LenKa [72]

Answer:

numerator degree of freedom = 3

Denominator degree of freedom = 47

Step-by-step explanation:

The numerator degree of freedom is given by :

p - 1 ; where p = number of predictors ;

p = number of independent variables + 1

Number of independent variables = 3

p = 3 + 1 = 4

Numerator degree of freedom = p - 1 = 4 - 1 = 3

The denominator degree of freedom = n - p ; where n = number of observations

Number of observations, n = 51

Denominator degree of freedom = n - p = 51 - 4 = 47

6 0
2 years ago
Find solutions of -x^2+y^2=75
Citrus2011 [14]

Answer:yea yea

Step-by-step explanation:

7 0
3 years ago
A movie is 2hrs and 4 minutes long. The movie starts at 11:45am. When will the movie end?
dedylja [7]
The movie will end at 1:49 pm.
5 0
3 years ago
Read 2 more answers
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