Tifini

The parabolas y = -3x2 + 10x - 6 and y = -3x2 - 17x + 2 intersect at _____? A.the line y = 27x - 8. B. x=the square root of 2 over 3 and xthe -square root of 2 over 3. C. x=8/27. D. they do not intersect.

13 years ago

Which of the following quadratic equations have the solutions x = -3 and x = 5? A. -1/2(x+3)(x-5)=0 B. (x+3)(x-5)=0 C. (x-3)(x+5)=0 D. -1/2(x-3)(x+5)=0

13 years ago

Suppose a parabola has its vertex at (0, 1) and its zeros at x = -3 and x = 3. Then equals _____. A. 9-x^2 B. 1-1/9x^2 C. x^2-1 D. x^2-9

13 years ago

You can factor the polynomial f(x)=x^2-19x+70 as (x+a(x+b). The values for a and b are _____. A. a=10, b=-9 B. a=19, b=70 C. a=-5, b=-14 D. a=-16, b=3 E. none of the above.

13 years ago

Let f(x)=-16x^2-x^3 and g(x)=-2-4x^2. Then f(x)-g(x) equals____? A. 1-2x^2-x^3 B. -1-2x^2+x^3 C. 1+2x^2-x^3 D. -1+2x^2+x^3

13 years ago

Let f(x)=-1-6x^2-x^3 and g(x)=-2-4x^2, then f(x)-g(x) equals___? A. 1-2x^2-x^3 B. -1-2x^2+x^3 C. 1+2x^2-x^3 D. -1+2x^2+x^3

13 years ago

Let f(x)=x^1999 and g(x)=2x-x^5. Then f(x)g(x) equals____? A. 2x^20000-x^2004 B. 2x-x^5+x^1999 C. (2x-x^5)^1999 D. 2x^1999-x^9995

13 years ago

Suppose a parabola f(x) has its vertex at (0, 25) and its zeros at x = -5 and x = 5. Then f(x)equals _____. A. 25-x^2 B. 1- 1/25 x^2 C. x^2-1 D. x^2-25

13 years ago

The solutions to the quadratic equation x^2+3x-4=0 are? (more then one answer) A. -4 B. 1 C. -1 D. 0 E. 4 F. There are no real roots.

13 years ago

In rectangle ABED, AC = 7 cm and DE = 10 cm. What is the length of AD? If necessary, round your answer to the nearest tenth.

13 years ago

Consider y=x^2+8x+16. What is the correct way to factor this equation? How does this equation shift the graph of y=x^2?

13 years ago

Consider y=x^2+8x+16. What is the correct way to factor this equation? How does this equation shift the graph of y=x^2? A. the correct factored form is y=(x+4)^2. this shifts the graph of y=x^2 up 4 units. B. the correct factored form is y=(x+4)^2. this s...

13 years ago

Find the difference of the polynomials below. Write your answer in descending order. (x3 + 2x2 + 5x + 7) - (3x3 - 2.5x2 + 5x + 5)

13 years ago

Factor by grouping. 36 + ab + 2b + 18a A. (a-2)(b-18) B. (a+2)(b+18) C. (a+2)(18a+2) D. (ab+2b)(36+18a) E. this cannot be factored.

13 years ago

What is the coefficient of the xy^2 term in the expansion of (3x + y)^3? Use the binomial theorem.

13 years ago

Calculate the product of the binomials below. Use the caret ( ^ ) to enter any exponents; for example, write x2 as x^2. Write your answer in descending order. (4x - 3)(x + 1)

13 years ago

A valid password on a Web site contains 3 letters (A-Z, 26 total), followed by 3 digits (0-9). Letters and numbers can be repeated. The number of possible passwords equals _____. A. 26*25*24+10*9*8 B. 26^3+10^3 C. 26^3*10^3 D.26*25*24*10*9*8

13 years ago

Among a group of people, 10% are from NYC and 90% are not. All people from NYC are under 18 years old, and 60% of those not from NYC are also under 18 years old. One person is chosen at random, and he or she is under 18. What is the probability that the p...

13 years ago

Which of the following may constitute a population? (choose all that are correct.) A. all rats in New York. B. all nurses in a hospital. C. all skyscrapers in Chicago. D. all brown-haired people in Oslo.

13 years ago

Consider the sample space S = {1, 2, 3, . . ., 10}. Let A = all odd numbers in S. Let B = all multiples of 3 in S. Compute P(B | A). Enter your answer as a fraction using the "/" and do not include spaces in your answer.

13 years ago

The triangle with vertices (0, 0), (2, -5), and (7, -3) is? a. right. b. equilateral. c. isoceles. d. scalene.

13 years ago

Which of the following methods can be used to construct a pattern of 10 numbers for which it would be mathematically impossible to predict the 11th term? (more then one answer.) A.Make a pattern, starting with 3, where each number is the next digit of pi...

12 years ago

Which of the following graphs of exponential functions corresponds to a geometric sequence with a 1st term of 6 and a ratio of 1/2? I'm honestly so confused on this. :(

12 years ago

An architect's compensation package includes the total cost of a $250-per-month health insurance plan, the total cost of a $35-per-month life insurance plan, and a salary of $55,000 per year. What is the yearly value of the compensation package? A. $58,42...

12 years ago

Trina's employer purchased a health insurance plan that costs $550 per month. Trina pays $85 toward the plan each month. What is the annual value of the employer's contribution? A. $7560.00 B. $5580.00 C. $1020.00 D. $6600.00

12 years ago

You draw two cards from a well-shuffled deck of 52 cards. After you draw the first card, you do not replace it in the deck. The probability of drawing the ace of diamonds on your first draw is 1/52. What is the probability of P(get king of clubs on second...

12 years ago

When the production manager finds the average life of her bulb-lifetime data, it is an example of what phase of inferential statistics? A. Data organization. B. Data gathering. C. Data analysis. D. Probability-based inference.

12 years ago

Terry and Sandra both found the sum of two 4-digit numbers, but their results were not the same. If Terry made an error of addition by one in the thousands column and Sandra's result was correct, what was the difference between the larger result and the s...

12 years ago

Put the equation below in the form ax^2+bx+c=0. -x^2+3=(4x+1)^2, I've been stuck on this for the past hour, could someone please explain how to do this problem?

11 years ago

Thank youu! (:

13 years ago

(x+a)(x+b) is what i meant.. sorry!

13 years ago

Theres 3 feet in a yard, so 11*3 would be $3.30 a cubic yard and since company b already has it in cubic feet company b= 3*20, which would give you $60 dollars for 20 cubic yards, and company a= $3.30*20, which would be $66 for 20 cubic yards. the better...

13 years ago

shoot! the problems f(x)=-1-6x^2-x^3 and g(x)=-2-4x^2, then f(x)-g(x) equals___? then same choices i have above.. im sorry! thank you for doing this though! i didn't realize i copied it wrong.. :(

13 years ago

The vertex is at (0,4) sorry, I copied it wrong.

13 years ago

Ohh! I get it now, thank you!

13 years ago

the center. its a rectangle broken into the triangles

13 years ago

it doesn't say anything, im doing it online and there was nothing in the notes about it, but i do know the title of the section is called "samples and Population"

13 years ago

1800. 1/3=600, and 2/3=1200. which means the whole property cost should be a multiple of 6 also. so 3/3 is $1800.

12 years ago

oh!A!

12 years ago

Thank you! (:

12 years ago

P (p > 0.23995) = P (x > 2399.5) = P (z > -2.3209) = 0.9899

12 years ago