A biologist studied the populations of black bear and brown bears over a 10-year period. The biologist modeled the populations, in thousands, with the following polynomials where x is time, in years.
black bears: 2.3x^2 - 5.6x + 2.3
brown bears: 2.4x^2 + 7.2x + 0.97
What polynomial models the total number of brown and black bears?
a) 4.7x^2 + 1.6x + 3.27
b) 4.7x^2 - 1.6x - 3.37
c) 4.7x^2 + 1.6x - 3.37 <---- My Answer
d) 4.7x^2 - 1.6x + 3.37
12 answers
I disagree. Why are you subtracting the last terms?
its a
Apparently theres a couple different versions so i hope this ones right
B
A
B
A
A
D
B
A
A
B
D
A
D
C
A
A
D
D
Hopefully it'll help someone if this isn't taken down huns
B
A
B
A
A
D
B
A
A
B
D
A
D
C
A
A
D
D
Hopefully it'll help someone if this isn't taken down huns
nutty is that right bro? thanks
nuttykoko is wrong
Guys the math ALWAYS changes the questions up on unit and quizzes so.
you must put the answer, not the letter.
1. -6x^4
2. 9x^2 - 12x + 6; quadratic trinomial
3. 4.7x^2 + 1.6x + 3.27
4. 56x^2
5. 15p^2 + 7p - 2
6. 21x^2 - 30x - 24
7. 12x^2 - 28x + 15
8. 24pix^3+76pix^2+66pix+9pi
9. 64pix^2+32pix+4pi
10. 9x^2 - 42xy^4 + 49y^8
11. (x + 7) and (x - 4)
12. (x - 6y)(x - 8y)
13. (4x - 1) and (3x + 2)
14. (3x + 5) and (x - 6)
15. (d + 9)^2
16. (r + 3)(r - 3)
17. x, x - 3, and x + 6
18. y, y + 8, and y - 7
19. (g^2 - 2j)
20. 45x^2 + 20x + 1
These are correct. Trust me
2. 9x^2 - 12x + 6; quadratic trinomial
3. 4.7x^2 + 1.6x + 3.27
4. 56x^2
5. 15p^2 + 7p - 2
6. 21x^2 - 30x - 24
7. 12x^2 - 28x + 15
8. 24pix^3+76pix^2+66pix+9pi
9. 64pix^2+32pix+4pi
10. 9x^2 - 42xy^4 + 49y^8
11. (x + 7) and (x - 4)
12. (x - 6y)(x - 8y)
13. (4x - 1) and (3x + 2)
14. (3x + 5) and (x - 6)
15. (d + 9)^2
16. (r + 3)(r - 3)
17. x, x - 3, and x + 6
18. y, y + 8, and y - 7
19. (g^2 - 2j)
20. 45x^2 + 20x + 1
These are correct. Trust me
No, my test is different
IDK if you have the same answer as me I took the test here are my answers BTW I have 18 questions on the test
1. B 10x^4
2. D -3y^5
3. C 6x^2 + 2x + 8 quad trin
4. A 4.7x^2 + 1.6x +3.27
5. D 71x^2
6. D 15h^2 + 26h - 21
7. B 40w^2 + 41w + 10
8. A 12x^2 - 28x + 16
9. B 50TTx^3 + 240TTx^2 + 168TTx + 32TT
10. B 16x^2 - 48xy^3 + 36y^6
11. B (x + 9) and (x - 3)
12. B (x + 6) and (x - 5)
13. D (x - 6y)(x - 4y)
14. C 5x + 4) and (2x - 1)
15. B (5x + 7) and (x - 2)
16. D 45x^2 + 20x + 1
17. C (w + 8)^2
18. D (t + 5)(t - 5)
I know there are a lot of Bs but it should be correct if you have the same test
it took me a long time to type this out if I get you close to a 100% may I get lots of like?
1. B 10x^4
2. D -3y^5
3. C 6x^2 + 2x + 8 quad trin
4. A 4.7x^2 + 1.6x +3.27
5. D 71x^2
6. D 15h^2 + 26h - 21
7. B 40w^2 + 41w + 10
8. A 12x^2 - 28x + 16
9. B 50TTx^3 + 240TTx^2 + 168TTx + 32TT
10. B 16x^2 - 48xy^3 + 36y^6
11. B (x + 9) and (x - 3)
12. B (x + 6) and (x - 5)
13. D (x - 6y)(x - 4y)
14. C 5x + 4) and (2x - 1)
15. B (5x + 7) and (x - 2)
16. D 45x^2 + 20x + 1
17. C (w + 8)^2
18. D (t + 5)(t - 5)
I know there are a lot of Bs but it should be correct if you have the same test
it took me a long time to type this out if I get you close to a 100% may I get lots of like?
I´m checking if @Nuttykoko is correct. I´m really hoping that they, are correct. :)
I got 72.22% AKA 13/18 on the Unit Test. (Polynomials).
1- What is the sum or difference of 2x^4+8x^4?
Answer: B-10x^4
2- What is the sum or difference of 3y^5 – 10y^5?
Answer: A- -7y^5
3- Write the polynomial in standard form. Then name the polynomial based on its degree and number of terms. 6 – 12x + 13x^2 – 4x^2
Answer: B- 9x2 – 12x + 6; quadratic trinomial
4- A biologist studied the populations of black bear and brown bears over a 10-year period. The biologist modeled the populations, in thousands, with the following polynomials where x is time, in years.
black bears: 2.3x2 – 5.6x + 2.3
brown bears: 2.4x2 + 7.2x + 0.97
What polynomial models the total number of brown and black bears?
Answer: A- 4.7x2 + 1.6x + 3.27
5- A sports team is building a new stadium on a rectangular lot of land. The lot measures 8x by 12x and the stadium will be 3x by 6x. How much land will be left for the parking lot?
Answer: A- 78x^2
6- Simplify the product using the distributive property. (5h – 3)(3h + 7)
Answer: D- 15h^2 + 26h – 21
7- Simplify using a table.
(6q + 7)(2q + 3)
6q 7
2q
3
Answer: A- 12q^2 + 32q + 21
8- Simplify the product using FOIL. (6x – 5)(2x – 3)
Answer: A- 12x^2 – 28x + 15
9- A cylinder has a radius of 4x + 2 and a height of 5x + 4. Which polynomial in standard form best describes the total volume of the cylinder? Use the formula V = pi r^2 h for the volume of a cylinder.
Answer: A- 80 pi x^3 + 144 pi x^2 + 84 pi x + 16 pi
10-
My test wasn´t loading the rest of the assignment, I´m really sorry!!
I really hope I helped, atleast a little bit because this is what I would want someone to do for me. :) I hope you all get 100s on your Unit Test. Have a great day!
-Nater<3
1- What is the sum or difference of 2x^4+8x^4?
Answer: B-10x^4
2- What is the sum or difference of 3y^5 – 10y^5?
Answer: A- -7y^5
3- Write the polynomial in standard form. Then name the polynomial based on its degree and number of terms. 6 – 12x + 13x^2 – 4x^2
Answer: B- 9x2 – 12x + 6; quadratic trinomial
4- A biologist studied the populations of black bear and brown bears over a 10-year period. The biologist modeled the populations, in thousands, with the following polynomials where x is time, in years.
black bears: 2.3x2 – 5.6x + 2.3
brown bears: 2.4x2 + 7.2x + 0.97
What polynomial models the total number of brown and black bears?
Answer: A- 4.7x2 + 1.6x + 3.27
5- A sports team is building a new stadium on a rectangular lot of land. The lot measures 8x by 12x and the stadium will be 3x by 6x. How much land will be left for the parking lot?
Answer: A- 78x^2
6- Simplify the product using the distributive property. (5h – 3)(3h + 7)
Answer: D- 15h^2 + 26h – 21
7- Simplify using a table.
(6q + 7)(2q + 3)
6q 7
2q
3
Answer: A- 12q^2 + 32q + 21
8- Simplify the product using FOIL. (6x – 5)(2x – 3)
Answer: A- 12x^2 – 28x + 15
9- A cylinder has a radius of 4x + 2 and a height of 5x + 4. Which polynomial in standard form best describes the total volume of the cylinder? Use the formula V = pi r^2 h for the volume of a cylinder.
Answer: A- 80 pi x^3 + 144 pi x^2 + 84 pi x + 16 pi
10-
My test wasn´t loading the rest of the assignment, I´m really sorry!!
I really hope I helped, atleast a little bit because this is what I would want someone to do for me. :) I hope you all get 100s on your Unit Test. Have a great day!
-Nater<3
3 answers