Homework Help: Algebra (check my answers)

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

Please check these answers.

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 4:10pm
check # 7 and 9
Algebra (check my answers) - johnnie howard, Thursday, March 21, 2013 at 8:49pm
Simplify 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-Please check - Please check- sqrt of 2x + 15 = x Answers: -5.3 -3.5 -3 5...
Algebra - Will someone please check my answers? 1. Multiply. (a^+2ab-b^2)(a^2-...
Algebra - Suppose a triangle has angles A,B, and C. Angle C is the right angle. ...
Math HELP - I have my answers at the bottom but please do these questions so I ...
Asap can someone pplz check these answers - Please check my answers I have 2 do ...
English - Now, let's check how well you can use the expressions you've ...
math - can someone check my answers please subtract -7.1-(-8.3)= 1.2 multiply (7...
Math 116 algebra please check - Multiply 1/7×(-3/7)=-3/49 Please check
Algebra - 1. Find the slope of the graph of the linear function f with f(0)=4 ...

For Further Reading

First Name:
School Subject:
Answer: