Ahippopotamus can stay under water for 15 minutes. a sea cow can stay under water y minutes. this is 11 minutes longer than one-third the time a hippopotamus can. write an equation and solve to determine how long the sea cow can stay under water.

The sea cow can stay under water for 16 minutes.

Step-by-step explanation:

A hippopotamus can stay under water for 15 minutes.

A sea cow can stay under water minutes and this is 11 minutes longer than one-third the time a hippopotamus can.

So, "11 minutes longer than one-third the time a hippopotamus can" means:  

Thus, the equation will be:  

Now, solving the above equation, we will get.........

So, the sea cow can stay under water for 16 minutes.

"if it is my birthday, then it is snowing"

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'.