The 4 legged stool will rock. the 4 ends of the legs form a plane. they cannot sit on an uneven surface. the area they sit on must be planar. the 3 legged stool, however, can sit without rocking, because any 3 points define a plane entirely
The answer would be the bottom left one because 5.15 round to 5 and 42,980 rounds to 40,000 which is equal to 4x10^4 (4 zeros). Then you subtract the exponents and divide the other terms to get 1.25x10^2
(x+b/2a)^2-(b^2-4ac)/2a=0
Step 2:
Re-write the expression:
(x+b/2a)^2=(b^2-4ac)/4a^2
Step 3:
get the square root of both sides:
x+b/2a=sqrt[(b^2-4ac)/4a^2]
Step 4:
Simplifying we get:
x+b/2a=sqrt[b^2-4ac]/2a
Step 5
Make x the subject:
x=-b/2a+/-sqrt[b^2-4ac]/2a
Answer:
-5.8
Step-by-step explanation:
-2-.7-3-.1= -5.8
Step-by-step explanation:
<u>Slope formula:</u>
<u></u>
m = slope
<u>Substitute the points into the formula:</u>
<u>Solve:</u>
<u>Simplify:</u>
The slope equals 1.