The population over the last decade of the Black Rhino is such that it is nearing extinction.
A tennis tournament starts with 64 participants. Each round, half the players are eliminated.
The amount of cell phone subscribers in a small town increases by 75% each year.
The price of a stock goes up 12% each year.
B. x(3 – 4x)
C. (3x -1) (x -1)
D. (3x +1)(x -1)
2. Which is a completely factored form of the expression: x2 + 21x +20 ?
A. (x + 5)(x + 4)
B. (x + 10)(x + 2)
C. (x + 20)(x + 1)
D. (x + 21)(x - 1)
3. Which expression is factored form of 4x2 -9?
A. 2(x - 3)2
B. (x - 3)2
C. 2(x + 3)(x - 3)
D. (2x + 3)(2x - 3)
4. Below are factored forms of the expression: 12x3 – 36x2 . Which expression has the greatest common factor as the first term?
A. 3x (4x2 – 12x)
B. 4x2(3x -9
C. 12x2(x – 3)
D. 12x(x2 - 3x)
5. Adele’s lawn has an area of (x2 -5x -6) square feet and a length of (x + 1) feet. What is the width of the lawn in feet?
A. (x -6)
B. (x +6)
C. (x2 -4x -5)
D. (x2 -6x -7)
6. The expression below represents the area, in square meters, of a rectangle:
X2 + 5x -24
Which of the following pairs of expressions could represent the length and width, in meters, of the rectangle?
A. (x – 3) and (x + 8)
B. (x – 4) and (x + 6)
C. (x – 6) and (x + 4)
D. (x – 8) and (x + 3)
7. What is the complete factorization of 32 – 8z2?
A. -8(2 + z)(2 –z)
B. 8(2 + z)(2 – z)
C. -8(2 + z)2
D. 8(2 – z)2
8. What is the greatest common factor of: 12x2 , 24x2y2 , and 46xy?
A. 4x
B. 3x
C. 6x
D. 2x
9. Which expression is equivalent to: 2x2 -3x -35?
A. (2x + 7)(x - 5)
B. (2x - 7) (x + 5)
C. (2x - 5)(x + 7)
D. (2x + 5)(x - 7)
10. What are the factors of 81x2 + 36x + 4?
A. (9x + 2)(x +2)
B. (9x +2)(9x +2)
C. (9x -2)(9x -2)
D. (9x +2)(9x -2)
11. The top of a rectangular table has an area of: 18x2+ 69x +60.
The width of the table is 3x + 4. What is the length of the table?
(Show proof by multiplying – show your work)
12. Simplify: (x2 +2x)(5x -3)
A. 11x2 -3
B. 6x3 -6x
C. 5x3 + 7x2 – 6x
D. 5x3 – 13x2 -6x
13. Factor by grouping: 30g5 +24g3h – 35g2h2 - 28h3 Show your work!
14. Which is the correct way to factor the polynomial : x2 -16?
A. (x -4)(x -4)
B. (x -4)(x +4)
C. (x +4)(x -2)(x +2)
D. Not factorable
15. The area of a square painting is: 81p2 + 90p +25. What is the length of one side? Prove by multiplication – show your work.
1. - A.
2.
Find the roots:
,
then
- C.
3. - D.
4. - C.
5.
Find the roots:
,
then
and the width of the lawn is x-6 - A.
6. Since the length and width are x+8 and x-3 - A.
7. - B.
8. .
So the greatest common divisor is - D.
9.
Find the roots:
,
then
- A.
10. - B.
11. , the length is 6x+15.
12. - C.
13. .
14. - B.
15. , the length of one side is 9p+5.
Answer:
yes that is right
Step-by-step explanation:
usa test prep
10–25 years 10 5 20 35
26–40 years 15 10 10 35
41–55 years 20 10 0 30
Total 45 25 30 100
What is the probability (rounded to the nearest whole percent) that a randomly selected person is 10 to 25 years old or prefers drinking rootbeer?
60%
55%
10%
5%
-31/8 converts to -3.875 in decimal form. In the case of negative numbers, 'less than' refers to numbers further from zero. Therefore, -3.92 is 'less than' -31/8.
To answer this question, we first need to convert -31/8 into decimal form. Doing this, we get -3.875.
Now we can compare -3.875 and -3.92. When it comes to negative numbers, a number is 'less' if it is further from zero. In this case, -3.92 is further from zero than -3.875.
So, -31/8 is greater than -3.92. In other words, -3.92 is 'less than' -31/8.
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