A=h(a+b)/2 solve for a

2A/h - b =a

Step-by-step explanation:

A=h(a+b)/2

Multiply each side by 2

2A =h(a+b)/2*2

2A=h(a+b)

Divide each side by n

2A/h = h(a+b)/h

2A/h = a+b

Subtract b from each side

2A/h - b =a+b-b

2A/h - b =a

first option

a function is a relation in which an input is paired with exactly one output.

so, let's find the right answer.

in our first option, our inputs are january, february, and march. the outputs are 30, 28, and 25. each input has it's own output. this is correct!

our second option we know is incorrect, because ms. valverade has two outputs, dogs and cats. this is not a function.

our third option is incorrect as well. the yellow square has two ouputs, the square and the triangle.

lastly, in our fourth option, we see the number 7 two times with a different output. therefore, this is not a function.

remember: each input must be paired with only one output!

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing

step-by-step explanation: