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Mathematics 20 Online
OpenStudy (anonymous):

PLEASE HELP WILL GIVE MEDAL, FAN, AND TESTIMONIAL!!!

OpenStudy (anonymous):

OpenStudy (anonymous):

@Brostep0s

OpenStudy (michele_laino):

for your first point, you have to solve this equation, please: \[\frac{ 45 }{ 100 }x=86\]

OpenStudy (anonymous):

1720 9

OpenStudy (anonymous):

1720/9

OpenStudy (anonymous):

@Michele_Laino

OpenStudy (michele_laino):

ok!

OpenStudy (michele_laino):

for your second point you have to solve this equation, for p: \[\frac{ p }{ 100 }*26=4\]

OpenStudy (anonymous):

200/13

OpenStudy (anonymous):

@Michele_Laino

OpenStudy (michele_laino):

ok!

OpenStudy (michele_laino):

for your third point you have to solve this equation: \[250*\frac{ p }{ 100 }=70\]

OpenStudy (anonymous):

we are still on the first question? @Michele_Laino

OpenStudy (michele_laino):

we are at question 3

OpenStudy (michele_laino):

reassuming for question 1, what is the option?

OpenStudy (anonymous):

idk? i thought we were going through the steps

OpenStudy (michele_laino):

please, note that for question 1 I wrote the subsequent equation: \[\frac{ 45 }{ 100 }x=86\] do you agree?

OpenStudy (anonymous):

yes and i answered it?

OpenStudy (anonymous):

but idk which option for the question does it fit

OpenStudy (michele_laino):

please, your answer is to pick the right option...

OpenStudy (anonymous):

idk which one it is thats why i was asking for help?

OpenStudy (michele_laino):

note that I can rewrite my equation as below: \[0.45*x=86\] since 45/100=0.45 so?

OpenStudy (anonymous):

so it would be C or D

OpenStudy (michele_laino):

I think A, because if we use n in place of x, I can write: \[0.45*n=86\]

OpenStudy (anonymous):

oh ok

OpenStudy (michele_laino):

now for your question 2, I wrote this formula: \[\frac{ p }{ 100 }*26=4\]

OpenStudy (anonymous):

yes

OpenStudy (michele_laino):

now I can rewrite this equation as below: \[\left( \frac{ p }{ 100 } \right)*26=4\]

OpenStudy (michele_laino):

If I set n in place of p/100, I can write this: \[n*26=4\] so?

OpenStudy (anonymous):

B?

OpenStudy (michele_laino):

please I can rewrite it as below: 4=n*26, so?

OpenStudy (anonymous):

oh so C i was stuck between both but i thought it was B most likely

OpenStudy (michele_laino):

I think it is C, so that's right!

OpenStudy (anonymous):

alright

OpenStudy (michele_laino):

since question rquires the percentage of 26 in order to get 4. do you agree?

OpenStudy (anonymous):

yes

OpenStudy (michele_laino):

for your question 3, we have to solve this equation: \[\frac{ p }{ 100 }*250=70\] since question requires the percentage of 250 in order to get 70. So what is the value of p?

OpenStudy (anonymous):

p=28

OpenStudy (michele_laino):

so what option?

OpenStudy (anonymous):

C

OpenStudy (michele_laino):

well done!

OpenStudy (michele_laino):

now let's go to your question 4

OpenStudy (anonymous):

ok

OpenStudy (michele_laino):

you have to evaluate this expression: \[\frac{ 65 }{ 100 }*80\] since that question requires the 65% of 80

OpenStudy (anonymous):

52

OpenStudy (anonymous):

B

OpenStudy (michele_laino):

perfect!

OpenStudy (michele_laino):

for your question 5, we have to solve this equation: \[\frac{ 30 }{ 100 }*N=48\] since that question requires, what is the number of whose 30% is 48

OpenStudy (anonymous):

160 D

OpenStudy (michele_laino):

that's right!

OpenStudy (anonymous):

Thanks! :D

OpenStudy (michele_laino):

Thanks! :)

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