Yasmin has earned the following grades on her science tests: 97, 84, 88, and 87. What is the minimum
grade she must get on the last test in order to have an average of 90?

94

Step-by-step explanation:

The best way to do math problems you dont know is to reverse engineer it,

90*5=450 <- Lets find how many points she must have in total to get

                      that average by multiplying by how many variables we will

                     have if the new test is added

450-97-84-88-87=94 <- Now take that number and subtract all given variables

Yasmin must get a 94 on the next test to get exactly 90

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'.

answer

you start with $5 and save $10 a week until you have at least $45wer

step-by-step explanation: