Where is the vertex of the graph of y = - x^2+4x+5 located?

(2.9)

(-2, - 7)

(2, 5)

(-2, 1)

The radius of a square with side 7 cm

Sanya has a piece of land which is in the shape of a rhombus. She wants her one daughter and one son to work on the land and produce different crops. She divided the land in two equal parts.

What is the least common denominator of 8 and 7

Contestants in a long distance race run 5 kilometers due south. The runners then turn right and head west twards the finish line.

Which of the following values is the solution to the equation m + (-38) = 15? 1.) 53 2.) - 53 3.) - 23 4.) 23

What does it mean when a line changes and you translated

Three of the angles of quadrilateral are 100 degrees, 104 degrees and 44 degrees. What is the size of the 4th angle

Eugene typed 525 words in 15 minutes. At that rate, how many words would he type in 8 minutes?

Ling tried to evaluate the expression 15:5+7*5

What is the exact value of tan (-pi) ?