All of the following expressions are equivalent except . x - 7
7 + (- x)
7 - x
- x + 7

18 units²

step-by-step explanation:

first let's find altitude bd using the distance formula

d = √((y₂ - y₁)² + (x₂ - x₁)²)

bd = √((0 - -3)² + (0 - 3)²)

bd = √18

given the placement of points a and c, we can denote that point d bisects segment ac.

we will call ac the base.

using the distance formula

ac = √((0 - 6)² + (-6 - 0)²)

ac = √72

knowing our base and our height, we can plug these into our triangle area formula

area = (b * h)/2

area = (√18 * √72) / 2

area = (√1296) / 2

area = 36 / 2

area = 18 units²

my answer was deleted because it was to vague the answer is 12.76 becuase its in the hundreths place. john

the coach can choose 4 members to send to competition in 1680 ways. the correct answer between all the choices given is the second choice. i am hoping that this answer has satisfied your query and it will be able to you in your endeavor, and if you would like, feel free to ask another question.