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Mathematics 22 Online
OpenStudy (anonymous):

will medal and fan

OpenStudy (anonymous):

What is the sum? –18 + (–14) A. –32 B. –4 C. 4 D. 32

OpenStudy (anonymous):

@Mehek14

OpenStudy (anonymous):

@Michele_Laino

OpenStudy (anonymous):

-32

OpenStudy (michele_laino):

here we have to compute this: \[ \Large - 18 + \left( { - 14} \right) = - 18 - 14 = ...?\]

OpenStudy (anonymous):

What is the value of d + e + f when d = 20, e = –4 and f = –2? A. –26 B. –22 C. 14 D. 18

OpenStudy (michele_laino):

since the subsequent rule holds: + * - = -

OpenStudy (michele_laino):

we have to replace d, e, f with their corresponding values: \[\Large 20 + \left( { - 4} \right) + \left( { - 2} \right) = 20 - 4 - 2 = ...?\]

OpenStudy (anonymous):

is it a

OpenStudy (michele_laino):

I'm sorry, a) is a wrong option

OpenStudy (anonymous):

c

OpenStudy (michele_laino):

yes!

OpenStudy (anonymous):

that was my 2 answer

OpenStudy (anonymous):

Which statement is true? A. –14 + 21 = –24 + 17 B. 16 + (–6) > 24 + (–13) C. –14 + (–10) > 2 + (–28) D. –10 + (–8) > –12 + (–4)

OpenStudy (anonymous):

b

OpenStudy (michele_laino):

let's see... left side is: 16+(-6)=16-6=...?

OpenStudy (michele_laino):

please wait a moment, take your time

OpenStudy (anonymous):

22????????????????????????????

OpenStudy (anonymous):

@Michele_Laino

OpenStudy (anonymous):

@Mehek14

OpenStudy (anonymous):

D. 32

OpenStudy (michele_laino):

16-6=10 whereas the right side is: 24+(-13)= 24-13= 11 so being 10 different from 11, option B) is wrong

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