A graph with positive discriminant has 2 real roots, so it crosses the x axis twice
pick the graph that crosses x axis 2 times (not one that has vertex on the x axis)
To do this, You must know the formula. D=3.14l*r Or, Distance=3.14length*revolutions
3.14 is pi.
Revolutions are the turns of a wheel.
Plug in your numbers. D=3.14*20*1
D=62.8 inches
S^2 + 9s - 142 > 2000
s^2 + 9s - 142 - 2000 > 0
s^2 + 9s - 2142 > 0
(s-42)(s+51) > 0
s - 42 > 0
s > 42
s + 51 > 0
s > -51.......will not work
answer is : s > 42
Answer:
20% Increase
Step-by-step explanation:
[(New Value – Old Value)/Old Value] x 100 = Answer
[($60-$50)/$50]x100=20%
Answer:
<h2>The required percentage is 65.45%.</h2>
Step-by-step explanation:
The total costing is 
35% were given to the charity, hence 350 were given to the charity.
There are (1000 - 350) = 650 lapel pins remaining.
60% of 650 =
werre sold for 3.00 each. Hence, earning from here is
.
40% of 650 = 260 were sold at 5.00 for 2. It can also be said that
were sold at 5.00 each. Earning from this section is 
Total earning is (1170 + 650) = 1820.
Profit percentage = 