Tutors Answer Your Questions about expressions (FREE)
Question 169912: Could someone maybe tell me what I did wrong by these two problems;
(3a^2b)(-2ab^3)= 6a^3b4 (why is my answer wrong?)
or why is my answer wrong here; ab^2= 3(4)^2 = 3(4*4)=48
It would be more than great if someone could help me out here =)
Click here to see answer by stanbon(75887) |
Question 169912: Could someone maybe tell me what I did wrong by these two problems;
(3a^2b)(-2ab^3)= 6a^3b4 (why is my answer wrong?)
or why is my answer wrong here; ab^2= 3(4)^2 = 3(4*4)=48
It would be more than great if someone could help me out here =)
Click here to see answer by Alan3354(69443)  |
Question 171604: writing algebraic expressions
1.Two-thirds the time required to bake a turkey
?is the answer b2/3 b=time required to bake a turkey
3.The amount of money in your wallet doubled
? is the answer- mx2 m=amount of money
7.The combined weight of me, my car, and a 10-pound brick
?is the answer-m+c+10lb m=weight of me and c=weight of car
8.The value of a winning lottery ticket shared equally by three people
?is the answer- t/3 ? t=ticket
Click here to see answer by nerdybill(7384)  |
Question 171638: the height h (in feet)of an object that is dropped from the height of s feet is given by the formula h=s-16t^2, where t is the time the object is falling. a five foot tall woman on a sidewalk looks driectly overhead and sees a window washer drop a bottle from the 3rd story.how long does she have to get out of the way? round to the nearest tenth. (a story is 12 feet)..help!!!!!!!!!!!!!!!
Click here to see answer by Earlsdon(6294) |
Question 173054: This is an expression involving square roots using the FOIL method.
(sqrt 6 + sqrt 5)(sqrt 6 - sqrt 5)
(sqrt 6 x sqrt 6)-(sqrt 6 x sqrt 5)+(sqrt 5 x sqrt 6)-(sqrt 5 x sqrt 5)
sqrt 36 - sqrt 30 + sqrt 30 - sqrt 25
6 - sqrt 30 + sqrt 30 - 5
Ok, here's where I'm confused: if the negative and positive of sqrt 30 cancel out, does that leave me with 6 - 5 = 1, or 6 - (-5) = 11? Thank you.
Click here to see answer by Fombitz(32388)  |
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