do these algrebra answers look correct? eval.4+8DIVIDED by2-3.=3 what is thevalueof -15+7+{-4}= -12?

Question

last 4problems i have no answers for please help
what is the simplest form of y5.y3 ?
what is the simplist form of{5c2d3} {-2c5d2} ?
what is the simplist form of {x2}6+{2x4}3?
evaluate 6a2 +b{c-3a}whena=3,b=5,andc=16.
thanks for all the help

Answer 1

The way you wrote the question is hard to answer...you should separate the questions in the "answer box" so we can read it clearer, I am sure I coudl help you out if it was more easy to read your problem

thanks , try reposting

Answer 2

(4+8) / (2-3) is not equal to 3

-15 + 7 - 4 is equal to -12

does y5.y3 mean "y multiply by 5 multiply by y multiply by 3"?

(y x 5 x y x 3) where you just multiply them all together

or does it mean "y to the power 5 multiply by y to the power 3"?

which is: (y x y x y x y x y) x (y x y x y)


and does your next one mean
(5 x c x 2 x d x 3) x (-2 x c x 5 x d x 2)?

You can multiply all the numbers together to simplify them:
= (30 x c x d) x (-20 x c x d)

= 30 x c x d x -20 x c x d

and do the same here ...

6a2 + b(c-3a)

is the first bit of this 6 x a x 2

or is it 6 x (a squared) = 6 x a x a?

plug the numbers in:

6x3x2 + 5(16-3x3)

or 6x3x3 + 5(16-3x3)

Answer 3

6(3)*2+5(16-3(3))
18*7(16-9)
18*7(7)
18*49
882

the -12 is correct but 3 is wrong it is -12

Answer 4

yeah, i agree... if you repost it clearer, i will be more than happy to help you out =)