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creativ13 [48]
3 years ago
12

Find the domain of the function f(x)=2x^3+6x^2

Mathematics
1 answer:
dybincka [34]3 years ago
6 0
All real numbers for the domain
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There are 25 students in a class. 2525 of them walk to school.
Yanka [14]
You would have to do 25/25 to get the answer 
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Use the quadratic formula to solve x² + 9x + 10 = 0.
valentina_108 [34]
C.x=-7.7 and x=-1.3 should be the answer
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Gas is being pumped into a tank the total amount of gas G after amount of time T is given by the equation G= 50+20t if the total
luda_lava [24]

Answer:

T = 40 (minutes?)

Step-by-step explanation:

Given the equation G = 50 + 20T, where G = the total amount of gas and T = the amount of Time, we know that there is already 50 gallons of gas in the tank and that the rate at which it is pumped is 20 gallons per minute (I am assuming, though it is not stated in the problem).  Given that the tank holds 850 gallons, we can plug in the values into the equation and solve for the missing variable, T:

850 = 50 + 2T

Subtract 50 from both sides:  850 - 50 = 50 + 2T - 50 or 800 = 2T

Divide 2 from both sides: 800/2 = 2T/2

Solve for T:  40 = T

3 0
3 years ago
joe and beth both have landscaping businesses. Joe charges a flat fee of $15 to mow your yard and $8.00 for each tree he trims.
nalin [4]
15+8=23. 50+6=56
23+8=31. 56+6=62

Two Trees
5 0
3 years ago
Mr. Nelson lost one of his students' test
amid [387]

Complete question :

Mr. Nelson lost one of his students' test papers. He knows that the other 4 students scored as follows: 60, 62, 56, 57. He also knows that the average score is 59.2. What is the score on the missing paper?

Answer:

61

Step-by-step explanation:

Given the following :

Total number of students = 4 + 1 missing = 5

Score on the four avaliable papers = 60, 62, 56, 57

Average score of the 5 papers = 59.2

Score on missing paper :

Sum of each score / number of papers

Sum of each score = sum of available scores + missing score

Let missing score = m

(60 + 62 + 56 + 57 + m) = 235 + m

Recall:

Average = total sum / number of observations

Hence,

59.2 = (235 + m) / 5

59.2 × 5 = 235 + m

296 = 235 + m

m = 296 - 235

m = 61

Missing score = 61

6 0
3 years ago
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