Sunday

February 1, 2015

February 1, 2015

Posted by **Sharon** on Tuesday, November 8, 2011 at 3:58pm.

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 (check my answers) -
**lidia**, Tuesday, November 8, 2011 at 4:10pmcheck # 7 and 9

- Algebra (check my answers) -
**johnnie howard**, Thursday, March 21, 2013 at 8:49pmSimplify the expression 2√20-3√7-2√5+4√63 please help the is A because nothing change

**Answer this Question**

**Related Questions**

Algebra - Can you please check my work? You have helped other students I know. ...

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

Algebra - I have a few questions that I need help with. Solve the radical ...

math - can someone check my answers please subtract -7.1-(-8.3)= 1.2 multiply (7...

Math HELP - I have my answers at the bottom but please do these questions so I ...

Algebra - Will someone please check my answers? 1. Multiply. (a^+2ab-b^2)(a^2-...

Algebra-Please check - Please check- sqrt of 2x + 15 = x Answers: -5.3 -3.5 -3 5...

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

English - Now, let's check how well you can use the expressions you've learned. ...

Math 116 algebra please check - Multiply 1/7×(-3/7)=-3/49 Please check