Share
Explore BrainMass

Algebra problems on rounding decimals

Identify the letter of the choice that best completes the statement or answers the question.

____ 1. Round off 345.0149 to three decimal places.
a. 345.015
b. 345.01
c. 345
d. None of the above

For questions 2 through 5 use the following values of X: 1, 7, 0, 8 and -6

____ 2. ∑Χ
a. 28
b. 10
c. 22
d. None of the above

____ 3. ∑Χ2
a. 150
b. 200
c. -200
d. None of the above

____ 4. (∑Χ2)
a. 100
b. 200
c. -200
d. None of the above

____ ____ 5. ∑(Χ-2)
a. 2
b. -2
c. 2 or -2
d. None of the above

For question 6 use the following values of X: 12, 10, 5 and Y: 2, -1, 5

____ 6. ∑XY
a. 33
b. 39
c. 162
d. None of the above
____ 7. Based on the table, formula below, and the fact k=3, =?
a. 2 1/3 or 2.3
b. 3.13
c. 4 2/3 or 4.67
d. None of the above
ki ei fi
1 1 0
2 3 4
3 1 2
4 5 3
5 2 2

____ 8. (-8X-8) + (-(-8)) =?
a. 72
b. 64
c. -72
d. None of the above

____ 9. Evaluate the following expression:

a. 65
b. -65
c. 32.5
d. None of the above

____ 10. X(X4)(X2) is the equivalent to
a. 7X
b. 2X6
c. X7
d. None of the above

____ 11. X1/2 equals:

a. 1/x
b. 1/X2
c.

d. None of the above

____ 12. 5-4 equals

a. 625
b. -625
c. .0016
d. None of the above

____ 13. equals?

a. 1
b. .7
c. 7
d. None of the above

____ 14. 0! equals?
a. 0
b. 1
c. Undefined
d. None of the above

____ 15. Solve for X: 12-5x=-8
a. -1
b. 4
c. -4
d. None of the above

____ 16. Solve for X:
a. -1
b. 4
c. -4
d. None of the above
____ 17. Solve for X:
a. 6
b. 5
c. 12
d. None of the above

____ 18. Solve for X:

a. 5
b. 100
c. -5
d. None of the above

____ 19. Solve for X: -4X+16Y = -24

a. 6
b. 4Y+6
c. 24+16Y
d. None of the above

____ 20. equals?

a. 9
b. 81
c. -9
d. None of the above

See attached file for full problem description.

Attachments

Solution Preview

Following is the text part of the solution. Please see the attached file for complete solution. Equations, diagrams, graphs and special characters will not appear correctly here. Thank you for using Brainmass.
===============================================================================

Multiple Choice (20 questions)

Identify the letter of the choice that best completes the statement or answers the question.

____ 1. Round off 345.0149 to three decimal places.

a

a. 345.015
b. 345.01
c. 345
d. None of the above

For questions 2 through 5 use the following values of X: 1, 7, 0, 8 and -6

____ 2. ∑Χ

b
a. 28
b. 10
c. 22
d. None of the above

____ 3. ∑Χ2

a

a. 150
b. 200
c. -200
d. None of the above

4. ...

Solution Summary

I have provided solutions to these basic algebra problems.

$2.19