Option A is correct i.e 2x+7 is a factor of trinomial 
Step-by-step explanation:
We need to find the factor of the trinomial 
Factoring:

So, the factors are (2x+7) and (5x-4)
So, Option A is correct i.e 2x+7 is a factor of trinomial 
Keywords: Factorization
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Answer:
-3/17
Step-by-step explanation:
4/17 times -3/4 - divide both fours by 4 gets as 1
1/17 times -3/1----- -3/17
Answer:
Circle
Step-by-step explanation:
The definition of a circle is the set of points equidistant from a given point. Since all points are equidistant from this given point, the center, the radius is the same all throughout the circle; the only way to have all points equidistant is to travel around the center 360 degrees.
Answer:
Step-by-step explanation:
Here X the no of children suffering from hookworm treated and recovered is binomial because
a) Each child is independent of the other
b) There are only two outcomes
c) The probability for any child to recover is constant as 90% = 0.9
X is Bin (20,0.9)
a) Prob that all 20 will be cured
=P(X=20)=
b) Prob all but 1 will be cured=
c) Prob exactly 18 will be cured

d) Prob exactly 90% will be cured.
=