Answer: 80
Step-by-step explanation:
We can use the formula 
, where 
are the lengths of the diagonals.
By the distance formula,
So, the area is 
Answer:
this is not a equation.
Step-by-step explanation:
sorry. Do you mean y+7=-3x or something?
Answer:
The repair person did 5 hours of work.
Step-by-step explanation:
155 = 25x + 30
125 = 25x
5 = x
900. You round up, because it is above 850. :-)
1) false
2)true
3)-1.346
<span>4)<span><span>x=−5</span><span>x=-5</span></span></span>
<span>5)<span>x=3</span></span>
<span>6)x =~ 3.91 </span>
<span>7) x = 162.69 </span>
<span>hope I helped :)</span>
7)
