571,082,346,090 in word form would be Five hundred seventy one billion eighty two million three hundred forty six thousand ninety.
The first thing I would probably do is distribute (multiply) the -5/2 into the parenthesis:
= (-5/2)x + (-20/2)
Notice how I am not putting the x into the fraction. This is to make it easier to see the slope-intercept form.
Lets simplify the (-20/2) and then add 7 to both sides:
y - 7 = (-5/2)x - 10
y = (-5/2)x - 3
Your answer would then be:
y = (-5/2)x - 3
y = mx + b
Since it is now in the requested format.
Answer:
46°
Step-by-step explanation:
Since the 3 sides are given we can use any of the 3 trig. ratios to solve.
Using the tangent ratio in the right triangle
tan ? = 
= 
, thus
? = 
( ) ≈ 46° ( to the nearest degree )
To estimate this, round 53 to 50 and 12 to 10. 50 times 10 will be roughly what? 500. that is the estimated answer. the real answer is 636.
