Coin collections in a group of quarters and nickels, there are four
more nickels than quarters. how many nickels and quarters are
there if the coins are worth $2.30?

answer:

11 nickles

7 quarters

11-7 quarters = 4 quarters less 4 nickles more

step-by-step explanation:

okay

so

1$ =100(cents)

that means that

so

there must be

100 cents

meaning

4 quarter =$1

8 quarter

now the rest can be nickles

5 (cents)= nickles

5+5+5+5=20+5+5=30

8 quarters

6 nickles

so lets do this

6 times 5 = 30

10 x 5 = 50

$1.50 quarter = 6 quarters

1.75 in quarter =7 guarters

12x 5 =60 cents in quarters

1.75

11 nickles

7 quarters

11-7 quarters

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.