Isaiah spent $19.60 on a gift for his mother. the amount that he spent on the gift was 5/7 of the total amount that he spent at the store. which statements can be used to find x, the total amount that isaiah spent at the store? check all that apply 5/7 = x/19.60 5/7x = 19.60 5/7(7/5)x = 19.60(7/5) 5/7(7/5)x = x/19.60(7/5)

The second and 3dr

The third is the same as the second.But in the 3rd the x is multipied by 5/7 so when  you multiplies by 7/5  you have the x isolated.Then you do the same thing on the other side,and multiply 19.60 by 7/5

so x=19.60 multiplied by 7 and then divided by 5

x=27.44 (amount spent on the store)

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'.