It takes an experienced groundskeeper 390 minutes to
mow a large picnic area. A new groundskeeper takes
525 minutes to mow the same area. If they work
together to mow the picnic area, how long will it take
them?

223.77 minutes

Step-by-step explanation:

For this exercise you need to use the following formula:

Where is the individual time for object A, is the individual time for object B and is the time for A and B working together.

In this case, analizing the information given in the exercise, you can identify that:

Knowing these values you can substitute them into the formula and then you must solve for "t" in order to calculate how long will it take working together.

You get that this is:

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.