Hello,
Let's calculate the radius:
r²=5²+7²=74
The circle's equation is (x+5)²+(y+7)²=74
Answer C
Being able to write fractions in simplest form can make operations much easier. Also, to compare fractions, some may have to be in the simplest form.
I got x=-3.
Simplify both sides of the equation, then Isolate the variable.
Hope this helps! :D
Answer:
Step-by-step explanation:
From the question we are told that:
Height of child 
Height of child's shadow 
Height of tree's shadow 
Since position of Sun remains constant
Generally the equation for Height of tree h_t mathematically given by
- to a point which is more than halfway to the point F. Then draw an arc around the point. Next place the compass point at F and, keeping the same distance between the points of the compass, draw another arc so as to intersect the first arc at 2 points above and below the line EF. Finally draw a line passing through these 2 points of intersection. This is the perpendicular bisector of EF.
