SOLUTION: Question: Multiply. -7(2a2 - 4) Question: Multiply. 0.5(a + b - 5) Question: Factor. bx � by + bz Question: Combine like terms (simplify). 12x +

Click here to see ALL problems on decimal-numbers

Question 473180: Question:
Multiply.
-7(2a2 - 4)

Question:
Multiply.
0.5(a + b - 5)

Question:
Factor.
bx � by + bz

Question:
Combine like terms (simplify).
12x + 4 � 11y � 6x � 9 �
Question:
Evaluate the expression 3x2y when x = 3 and y = 5.

Question:
Write as a fraction and simplify.
z-4
Simplify.
(23)-2

Question:
Simplify.
(x-1y1)5

Question:
Write in scientific notation.
0.000005

Question:
Write in standard notation.
31 x 107

Question:
Perform the indicated operations (give your answer in scientific notation).
(5 x 102) x (5.6 x 104)

Question:
Solve.
x � 2.1 = �7.5

Question:
Solve.
2 - x = 11(x - 1)

Question:
If 5 times a number is increased by 5, the result is 30. Find the number.

Found 2 solutions by richard1234, rfer:
Answer by richard1234(7193) (Show Source):
You can put this solution on YOUR website!
Please follow the instructions regarding posting problems, which say "one question per post." Putting too many questions makes it less likely that a tutor will be able to solve all of them.

Answer by rfer(16322) (Show Source):
You can put this solution on YOUR website!
A)
-14a^2+28
B)
0.5a+0.5b-2.5
C)
b(x-y+z)
D)
6x-11y-5
E)
3*3*2*5=90
F)
-46
G)
5.0X10^-6
H)
310,000,000
I)
2.8X10^207
J)
x=-5.4
K)
2-x=11x-11
-12x=-13
x=1 1/12
L)
5x+5=30
5x=25
x=5