Answer:
a) 4
b) 10
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Answer:
0
Step-by-step explanation:
When there is one x-intercept, the discriminant is zero.
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The discriminant is used to compute the difference between the roots. When it is positive, the real roots are different, so there are two x-intercepts.
When the discriminant is zero, there is no difference between the roots, so there is one x-intercept (as here).
When the discriminant is negative, there are no x-intercepts and the two roots are complex.
Answer:
Step-by-step explanation:
Given
Required
Rewrite and identify a, b and c
The required form is:
Equate both expressions
Rewrite as:
Compare the expressions on either sides
Answer:
25/12
Step-by-step explanation:
1/2 + 2/5s = s - 3/4
2/5s = s - 5/4
-3/5s = -5/4
s = 25/12
The formula for finding the circumference of a circle is 
(where d is the diameter). So, simply plugging in 622 mm for <em>d </em>and 3.14 for pi, we find that c = 622 * 3.14 = 1953.08 mm.
