Algebra

posted by .

1.Solve 2x = 5x2
for x.
A. 2.322
B. 0.431
C. 0 and 2.322
D. 0 and 0.431

2.Which of these is a factor of 2x100 − x7 − 1?
A. x
B. x − 2
C. x + 1
D. x − 1

3.If P(x) is a polynomial with P(–6) = –1.12 and P(–5) = 0.6 then which of the following must be true?
A. There is a zero for P(x) between x = –6 and x = –5, but it may be a complex number.
B. There is a zero for P(x) between x = –6 andx = –5.
C. There is a zero for P(x) between x = –1.12 and x = 0.6, but it may be a complex number.
D. There is a zero for P(x) between x = –1.12 and x = 0.6.

4.the pH of a solution is given by the formula –log c, where c is the concentration of H+ in
gram-ions per liter. Find the pH when that concentration is 5.3 x 10–7.
A. 8.11
B. 7.72
C. 6.28
D. 5.84

5.Find the negative root of x2 − 3 = 0 to the nearest tenth.
A. 1.4
B. 1.7
C. –1.7
D. –1.4

6.An account with $300 in it has been earning 3% annual interest compounded continuously for 10 years
with no deposits or withdrawals in that time. How much was in the account 4 years ago?
A. $77.75
B. $222.25
C. $266.08
D. $338.25

  • Algebra -

    1. No choice matches
    2x = 5x^2
    x = 0 or 2/5
    check:
    2*0 = 0 = 5*0^2
    2*2/5 = 4/5 = 5*4/25

    May look at the others later. Hate homework dumps.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. calculus

    Find an equation for the surface consisting of all points P(x, y, z) equidistant from the point P(0, 1, 0) and the plane x = 3. Answer Choices: 1. y2 + z2 − 6x + 2y − 8 = 0 2. x2 + z2 + 6y − 2z − 8 = 0 3. y2 …
  2. Math

    Which of the following are linear equations in x1, x2 and x3?
  3. biology

    Given the part of the molecule shown below, can the underlined atom participate in a hydrogen bond with an approriate bonding partner?
  4. Grade 12 Calculus

    Evaluate each of the following. Show all your calculations. a) f'(3) if f(x)  = x^4 − 3x b) f' (−2) if f(x) = 2x^3 + 4x^2 − 5x + 8 c) f" (1) if f(X)  = −3x^2 − 5x + 7 …
  5. calculus (gr 12)

    Evaluate each of the following. Show all your calculations. a) f'(3) if f(x)  = x^4 − 3x b) f' (−2) if f(x) = 2x^3 + 4x^2 − 5x + 8 c) f" (1) if f(X)  = −3x^2 − 5x + 7 …
  6. calculus (gr 12)

    Evaluate each of the following. Show all your calculations. a) f'(3) if f(x)  = x^4 − 3x b) f' (−2) if f(x) = 2x^3 + 4x^2 − 5x + 8 c) f" (1) if f(X)  = −3x^2 − 5x + 7 …
  7. linear algebra

    solve using gauss jordan 10y − 4z + w = 1 x + 4y − z + w = 2 3x + 2y + z + 2w = 5 −2x − 8y + 2z − 2w = −4 x − 6y + 3z = 1
  8. math

    Completely factor the expression 2a3 − 128. A. 2(a − 4)3 B. 2(a − 4)(a2 + 4a + 16) C. 2(a3 − 64) D. Prime Completely factor the expression 7(x − y) − z(x − y). A. Prime B. (x − y)(7 − …
  9. math

    Completely factor the expression 16t3 − 50t2 + 36t. A. 2t(8t − 9)(t − 2) B. Prime C. 2t(8t + 9)(t + 2) D. 2t(8t − 25t + 18)   Completely factor the expression 48u4v4 − 18u2v2 − 3u8v5. …
  10. math

    Completely factor the expression 16t3 − 50t2 + 36t. A. 2t(8t − 9)(t − 2) B. Prime C. 2t(8t + 9)(t + 2) D. 2t(8t − 25t + 18)   Completely factor the expression 48u4v4 − 18u2v2 − 3u8v5. …

More Similar Questions