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Mathematics 7 Online
OpenStudy (anonymous):

Fan & Medal. I Need Help Quick. Question in Attachment. @iGreen @I_Need_Help_With_Home

OpenStudy (anonymous):

OpenStudy (leader):

let me check if you did #1 correct.

OpenStudy (anonymous):

ok. @Leader

OpenStudy (leader):

You actually did it worng. Th x value should be 0 and the y value is 3.

OpenStudy (leader):

wrong*

OpenStudy (leader):

the*

OpenStudy (anonymous):

1. -x +2y =6 x = 2y-6 Now put this for x in second equation to solve for y

OpenStudy (leader):

Look at this https://www.desmos.com/calculator/nvjqzdy4iv

OpenStudy (anonymous):

So what would right answer be? @Leader & ok ill look.

OpenStudy (leader):

X is 0

OpenStudy (leader):

So B.

OpenStudy (anonymous):

2. angle X =a angle Y = b a +b = 90 a = 2b - 30

OpenStudy (leader):

Only one uestion per post.

OpenStudy (leader):

Because then like 4 people hlp you wih the4 questions and you can't give them all medals.

OpenStudy (anonymous):

3. Large cupcakes = a Small cupcakes = b a+b = 105 1.25a +0.50b = 109.75

OpenStudy (leader):

4. (15,25)

OpenStudy (leader):

So 4 is B.

OpenStudy (leader):

Because of this https://www.desmos.com/calculator/woawabt6pn

OpenStudy (anonymous):

So would the anser for #2 be A or B? @sangya21

OpenStudy (anonymous):

4. 2x +3y = 105 x +2y = 65 x = 65 - 2y 2(x) +3y = 105 2(65-2y) +3y = 105

OpenStudy (anonymous):

Whts number 2 & 3? @sangya21

OpenStudy (anonymous):

2. C angle X =a angle Y = b a +b = 90 a = 2b - 30 2b-30 +b = 90 3b = 90+30 b = 120/3 b = 40 a = 2b-30 a = 50

OpenStudy (anonymous):

3 Large cupcakes = a Small cupcakes = b a+b = 105 1.25a +0.50b = 109.75 a = 105 - b 1.25(105 -b) +0.50b = 109.75 131.25 - 1.25b +0.50b = 109.75 131.25 - 109.75 = 1.25b - 0.50b

OpenStudy (anonymous):

so 3 is c? @sangya21

OpenStudy (anonymous):

Yes.

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