The circumference of a circle is 15 meters. find the area. use 3.14 for pi. what is the value of the radius rounded to the nearest tenth? what is the approximate area of the circle rounded to the nearest tenth?

What number should be added to both sides of the equation to complete this square? x^2-10x=7

(x-5)1/2+5=2 what is a possible solution?

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap