Question

Suzie is five years older than her brother, Michael. Write an expression to represent the sum of their ages of Michael's age is represented by x.

Answer 1

(x+5)+X=Sum

Answer 2

i tried x+5 already and got it wrong

Answer 3

add the +X part

Answer 4

are you sure thats right

Answer 5

cause i thought it could be 2x+5

Answer 6

yes
or you can try (X*2)+ 5
it means the exact same thing

Answer 7

thanks :) but im a try 2x+5 because, i think that would be a easier way to write it

Answer 8

okay cool:)

Answer 9

tell me if its right!

Answer 10

ok I will when im done doing the other problems

Answer 11

anything else you need help with?

Answer 12

yes actually. don't get this problem. A boat is travelling at a velocity represented by 2x^3 - 10x^2 + 7. At the same time, current is pushing the boat in the same direction with a velocity given by 5x^3 + 19x^2 + 4x. What is the total travelling velocity of the boat?

Answer 13

you add the two equations together i believe

Answer 14

yup im sure

Answer 15

yeah thats what i thought too .

Answer 16

soo.. how would i add them ? where do i start

Answer 17

Combine like terms

Answer 18

so the first one would be 7x^3

Answer 19

so the next one is 29x^2

Answer 20

no...Because the 10x^2 is negative

Answer 21

so you subtract

Answer 22

yes

Answer 23

so -29 ?

Answer 24

no...9 because the 19 is positive

Answer 25

but the 10 is negative ? so -10-19= -29...

Answer 26

it would actually be -10+19=9

Answer 27

lmao but i asked you if i subtract and you said yes ?

Answer 28

bc thats the same as 19-10 lol

Answer 29

ok lol so whats next

Answer 30

since the next two dont have like terms you just add them into the new equation

Answer 31

is this the new equation ?? 7x^3+9x^2+7+4x ??

Answer 32

switch the 7 and 4x places and then its correct!

Answer 33

wouldn't it still be the same thing tho ?

Answer 34

yes but thats the right way to write a mathimatical equation

Answer 35

ok!! so what next

Answer 36

thats it?

Answer 37

are you sure ? lol I thought your supposed to end up with 1 number

Answer 38

no, and im sure

Answer 39

I'll see if its right

Answer 40

okay

Answer 41

how would you do this ? The number of boys in a pre-school class is given by x + 6. The number of girls is given by x - 1. What expressions represents the total number of students?

Answer 42

(x+6)+(X-1) then simplify it

Answer 43

i put it in the calc and got 5 .?

Answer 44

you dont need to put it in your calculator its an expression

Answer 45

so how would i simplify it

Answer 46

since its addition and subtraction remove the parenthesis and combine like terms

Answer 47

5x

Answer 48

no...

Answer 49

it would be 2x + 5

Answer 50

how ??

Answer 51

like terms. so with out the parenthesis it would be x+6+x-1.
if you combine the two Xs it would be 2x and then you have 6-1 left which becomes 5

Answer 52

ohh well i had the 5 !

Answer 53

yup, close:)

Answer 54

can you give me a medal?

Answer 55

suree

Answer 56

there :)

Answer 57

thanks!

Answer 58

fan me !

Answer 59

alright back at you

Answer 60

please help !!! Violet has a TV, a dishwasher and a refrigerator in the back of her truck. The weight of the TV is represented by 2x^2 + 4x and the weight of the dishwasher is x^2 + 3. What polynomial represents the refrigerator if their total weight is 5x^2 + 3x + 9?

Answer 61

i have no clue on that one...

Answer 62

oh ok thanks anyways

Answer 63

how old are you?

Answer 64

lol why ?

Answer 65

i wanted see what math your doing lol

Answer 66

the 2 you gave me were wrong !!!