Algebra

1) translate to an algebraic expression: one less than a product of two numbers
A: xy-1

2) 12/25 = ?
A: ? = .48

3) Find -x when x= -25/41 (this is a fraction)
A: -x = 41/25

4) Use a commutative law to find an equivalent expression. An equivalent expression of zx is ?
A: xz

5) multiply: -0.4(-28)=?
A: 11.2

6) solve using the muliplication principle.
12=6x
x=?
A: x=2

7) use either < or > to write a true sentence.
-5.61 < 14.33
A: <

8) solve for the indicated letter
z=10+y, for y
A: y = z-10

9) solve using the principles together
96 = 12(3y + 2)
A: y = 2

10) graph the number on the number line.
-11/4 (fraction)
I placed it between -3 and -2. closer to -3 because when changing it to a decimal it was 2.75

11) you owe $416.00. $294.09 of debt was canceled. How much to you owe?
A: $122.01

12) 9% of 39 = ?
A: 3.51

13) subract: -9-(-6)=?
A: -3

14) add fractions: -7/10 + 3/5 = ?
A: -1/10

15) multiply: (38)(7) = ?
A: 266

16) 2[4-5(1-8)]= ?
A: 98

17) translate to algebraic expression.
43 multiplied by t
A: 43t

18) simplify fraction: 42xy/54x = ?
A: 7y/9

19) solve: 8x-20=4x
A: x = 5

20) translate to algebraic expression:
35 more than q
A: q + 35

21) divide fractions, if possible:
-5/19 divided by [-3/19] =
A: 5/3

22) add: -9+(-5) = ?
A: -14

23) a student's average points when 536 points are earned on 8 tests.
A: 67 points

24) solve fraction using multiplication principle: x/6 = -6
x = ?
A: x = -36

25) determine whether 5 is a solution of the equation 7x+5=40
A: yes

26) evaluate fraction p/g for p = 24 and g = 4
Q: p/g = ? (simplify answer)
A: p/g = 6

27) [40 divide (-8) divide [-1/9] = ?
A: 45

28) find equivalent expression without parentheses: -(c+1) = ?
A: -c-1

29) solve: 3x-6=3
x = ?
A: x = 3

30) describe the situation from the viewpoint of each person. during a year, a person saves 1500 dollars, and another person spends 600 dollars.
Q: which real number corresponds to 'saves 1500 dollars'?
A: 1500
Q: which real number corresponds to 'spends 600 dollars'?
A: -600

31) type in factored form 5x+85 = ?
A: -17

32) collect like terms. simplify answer. type an improper fraction:
18w + w + fraction10/17w = ?
A: fraction 333/17w to the third ?
I need help with this one

33) i need help with this one (fractions) also
solve using addition principle and simplify answer:
x
33) x - 2/3fraction = 4/5fraction
A: x = 22/15 (fraction)?

34) Q: evaluate (-9x)to the second power when x=7.
A: 3969

Q: evaluate -9x to the second power when x=7
A: -441

35) divide fraction, if possible. type N if answer is undefined.
140/-20 = ?
A: -7

36) divide fraction, if possible. type N if answer is undefined.
36/-4 = ?
A: -9

37) solve using addition principle:
-9+x=-7
solution is: ?
A: x = 2

38) in 1993, the elevation of an offshore well was -3130 ft. in 1998, a new well was 330 ft deeper. what was the elevation of the new well in 1998?
A: -3460 ft

39) subtract fraction: -2/3 minus 1/3 = ?
A: -1

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  1. First of all, do not put so many questions all into one posting, please.

    Your answers are correct, except the following:

    11) I got 121.91
    16) should be 78

    31)
    18w + w + (10/7)w ??
    = (306w+17w+10w)/17
    = (333/17)w

    33) is it (x-2)/3 = 4/5 ??, if so then
    5x - 10 = 12 ( I multiplied both sides by 15
    5x = 22
    x = 22/5

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  2. thank you but I still do not get 33.

    the question is
    x minus the fraction 2/3 = the fraction 4/5. to get the answer i would add the fraction 2/3 to the fraction 4/5 which gets me x = 22/15, right?

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  3. yes, if that is how the question was written.

    you had posted:
    x - 2/3fraction = 4/5fraction

    which I had interpreted as
    (x-2)/3 = 4/5

    the answer I provided reflected that version.

    Your original question with the word "fraction" inserted was quite confusing.

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  4. During a year, a person saves 1500 dollars? What is the corresponding number for this sentence?

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  5. simplify 19.(-30)-57

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  6. -2x>1/9

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  7. using a multipliation principal -x/11=1/16

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  8. 3x+x=4x+28-2x

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  9. Convert to a fraction.

    5 superscript negative 3 baseline

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