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anonymous
 one year ago
plz i need help :(
Evaluate the expression if a = 1 and b = 2.
fraction numerator 5 left parenthesis a star times plus 3 b right parenthesis over denominator a b end fraction
A.
20
B.
5.5
C.
15
D.
17.5
anonymous
 one year ago
plz i need help :( Evaluate the expression if a = 1 and b = 2. fraction numerator 5 left parenthesis a star times plus 3 b right parenthesis over denominator a b end fraction A. 20 B. 5.5 C. 15 D. 17.5

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freckles
 one year ago
Best ResponseYou've already chosen the best response.1\[\frac{5( \star \cdot 3b)}{ab}\] any idea what the value we should plug in for the star ?

freckles
 one year ago
Best ResponseYou've already chosen the best response.1so you are given \[a=1, b=2, \star=1\]

freckles
 one year ago
Best ResponseYou've already chosen the best response.1replace a with 1 replace b with 2 replace star with 1 then \[\frac{5( \star \cdot 3b)}{ab}=\frac{5(1 \cdot 3(2))}{1(2)}\]

freckles
 one year ago
Best ResponseYou've already chosen the best response.1oh your problem said something about a star in it

freckles
 one year ago
Best ResponseYou've already chosen the best response.1I'm sorry kind of confused about times plus and what that means exactly

freckles
 one year ago
Best ResponseYou've already chosen the best response.1can you draw the problem or is it really worded like that?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1441573677006:dw

freckles
 one year ago
Best ResponseYou've already chosen the best response.1\[\frac{5(a+3b)}{ab} \\ \\ \text{ okay so replace } a \text{ with 1} \text{ and } b \text{ with 2} \\ \frac{5(1+3 \cdot 2)}{1(2)}\]

freckles
 one year ago
Best ResponseYou've already chosen the best response.1do you know how to do 5(1+3*2) and 1(2)?

freckles
 one year ago
Best ResponseYou've already chosen the best response.11(2)? come on you know this 2

freckles
 one year ago
Best ResponseYou've already chosen the best response.15(1+3*2) here we apply order of operations what is 3*2?

freckles
 one year ago
Best ResponseYou've already chosen the best response.1ok so we have now 5(1+6)

freckles
 one year ago
Best ResponseYou've already chosen the best response.1and then whatever you get for 1+6 multiply that result by 5 so you should end up with 5 times 7

freckles
 one year ago
Best ResponseYou've already chosen the best response.1\[\frac{5(a+3b)}{ab} \\ \\ \text{ okay so replace } a \text{ with 1} \text{ and } b \text{ with 2} \\ \frac{5(1+3 \cdot 2)}{1(2)} \\ =\frac{5(1+6)}{2}=\frac{5(7)}{2}=\frac{35}{2}\]

freckles
 one year ago
Best ResponseYou've already chosen the best response.1and you are basically done just need to write as a decimal

freckles
 one year ago
Best ResponseYou've already chosen the best response.1since your choices are written that way

freckles
 one year ago
Best ResponseYou've already chosen the best response.1yes that is why I said to write as a decimal

freckles
 one year ago
Best ResponseYou've already chosen the best response.1how did you get 35.2?

freckles
 one year ago
Best ResponseYou've already chosen the best response.1dw:1441574329519:dw 2 doesn't go into 3, 3 times... 2 goes into 3, 1 times

freckles
 one year ago
Best ResponseYou've already chosen the best response.1dw:1441574353259:dw

freckles
 one year ago
Best ResponseYou've already chosen the best response.12 goes into 15 how many times?

freckles
 one year ago
Best ResponseYou've already chosen the best response.1dw:1441574417155:dw and finally 2 goes into 10 how many times?

freckles
 one year ago
Best ResponseYou've already chosen the best response.1right dw:1441574443279:dw \[\frac{35}{2}=17.5\]
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