37.5% of a number is 105. what is the number?

- anonymous

37.5% of a number is 105. what is the number?

- jamiebookeater

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- mayankdevnani

|dw:1355145221270:dw|

- mayankdevnani

can you now solve it? @bunyonb

- anonymous

It never occured to me that that was the solution.

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## More answers

- anonymous

There is an equation question that says: From the graph read off where âˆ’ 3 + x^2 + 2 x = âˆ’ 2 x âˆ’ 3

- mayankdevnani

that was the solution , right

- anonymous

yes

- mayankdevnani

and find the value of x, can you?

- anonymous

may i upload the paper
to show you what i am talking about?

- mayankdevnani

plzz

- anonymous

ok hold on

- mayankdevnani

k

- anonymous

i upload

##### 1 Attachment

- anonymous

Look at question 3 and 4

- anonymous

at Question 3 (d)

- mayankdevnani

sorry!!!i haven't any knowledge about this!!! sorry!!! @bunyonb

- anonymous

ok
thanks for your help

- mayankdevnani

a gr8 welcome

- anonymous

cwrw

- anonymous

@cwrw238 how about you?

- mayankdevnani

@cwrw238 plz help bunyonb!!!

- cwrw238

is it question 3 d you need help with?

- anonymous

yes

- anonymous

- cwrw238

have you drawn the graph of y = -3 + x^2 + 2x?

- anonymous

yes

- cwrw238

ok its the shape of a U i expect
now you need to draw the graph of y = -2x - 3 on the same graph paper.
plotting 3 points will be ok
i suggest you plot:
x y
0 -3
-2 1
1 -5

- anonymous

oh so i would need to plot two equations using some points
thats what you are saying?

- anonymous

on the same graph

- cwrw238

now their graph wil1 be a straight line
which will probably cut the curved graph at two points
at these points the 2 expressions are equal
and thats what you want - the coordinates of these 2 points (x,y)

- cwrw238

yes on same graph

- anonymous

ok

- cwrw238

you should get (-4,5) for one of the points - i'll let you find the second one.

- anonymous

cool

- anonymous

so you dont have to plot all the points?

- cwrw238

no 3 points is enough for y = -2x-3

- anonymous

ok

- anonymous

I just plot both equations

- anonymous

its true that the line touches the curve at -4

- anonymous

the line touches the curve starting at
( - 0.5,, -4)

- anonymous

but my graph is kinda messy so it is hard to figure out the second one

- anonymous

due to previous mistakes

- anonymous

so the second point would be when it stops touching the curve?

- anonymous

My graph is inaccurate
because the straight line is kinda off

- anonymous

I scaled the y-axis as even numbers

- anonymous

How did you get -4, 5 ?

- anonymous

i got - 0.5, -4

- anonymous

@cwrw238 you there?

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