Tuesday

March 31, 2015

March 31, 2015

Posted by **Sharon (ms. Sue)** on Tuesday, November 8, 2011 at 4:23pm.

Multiply

-7(2a2 -4) = -14a2 + 28

Multiply

0.5(a + b -5) = 0.5a + 0.5b - 2.5

Factor

bx - by + bz = b(x - y + z)

Combine like terms (simplify)

12x + 4 - 11y - 6x - 9 - y = 6x - 12y - 5

Evaluate the expression

3x2y when x = 3 and y = 5

Answer: 135

Write as a fraction and simplify

Z-4

Answer: 1/z-4

Write using negative exponents

1/64

Answer: -6-4

Multiply and simplify

3-small2 • 3small6 = 81

Divide and simplify

4-small2/4small4 = 16

Divide and simplify

Y/y-5 = 1

Simplify

(2small3) -small2 =32

Simplify

(x-small1 ysmall1) small5 = ysmall5/xsmall5

Write in scientific notation

0.000005 = 5x10 -small6

Write in standard notation

31 x 10small7 =310,000,000

Perform the indicated operations (give your answer in scientific notation)

(5x10small2) x (5.6x10small4) = 2.8x10small6

Solve

X - 2.1 = -7.5

Answer: x = -5.4

Solve

2.3 = -y/2

Answer: y = -4.6

Solve

2 - x = 11 (x - 1)

Answer: x = 13/12

Please check my answers.

- Algebra -
**Ms. Sue**, Tuesday, November 8, 2011 at 4:31pmDid you see lidia's response?

http://www.jiskha.com/display.cgi?id=1320785885

- Algebra -
**Sharon (ms. Sue)**, Tuesday, November 8, 2011 at 4:36pmYes! Great! I wasn't sure if she was a tutor or not thank you.

- Algebra -
**Ms. Sue**, Tuesday, November 8, 2011 at 4:54pmMany of our questions are answered very well by other students.

I'm not really a math teacher, so I defer to answers that appear to be reasonable.

- Algebra -
**sue**, Tuesday, September 4, 2012 at 5:32pmEvaluate the expression 3x2y when x = 3 and y = 5.

**Answer this Question**

**Related Questions**

Algebra (check my answers) - Please check these answers. Multiply -7(2a2 -4) = -...

Math, Please Help! - Ned divided a given number by 3 and then added 2. If he ...

Algebra Sq Rt - to multiply the sq rt of 3 cubed by the sq rt of 9 cubed I first...

algebra - Solve. x/9-1/7=26/63 STEP 1: The LCM is _________ To clear ...

algebra 2 - I am trying to factor the expression -8y^2+28y-60 but can't get an ...

Math(Please respond) - .50 - x / x = 3.20e-1 I need to solve for x. I was going...

Algebra - Solve S=a/(1-r) for r S = a/(1-r) Multiply both sides by 1-r S*(1-r...

math - 2/3 over 10 equals 1.8/r solve for r. (2/3)/10 = 1.8r. First, invert and ...

need guidance on an algebra problem - 20 x+3(y-1)=11 2(x-y)+8y = 28 multiply ...

Algebra - How do I solve for elimination method on this problem: 0.3x - 0.2y=4 ...