PLZ HELP!!
1 answer:
9514 1404 393
Answer:
y = -3x^2 -9x +30
Step-by-step explanation:
When a polynomial has a zero at x=p, it has a factor of (x -p). The factors of your quadratic are ...
f(x) = (x +5)(x -2)
At the point x=3, the value of this product is ...
f(3) = (3 +5)(3 -2) = (8)(1) = 8
In order for that value to be -24, it needs to be multiplied by a scale factor of -3. The quadratic you want is ...
y = -3(x +5)(x -2)
y = -3x^2 -9x +30 . . . . . standard form
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<h2>Fireman B,Fireman C</h2>
Step-by-step explanation:
Let the rate of fireman A be .
Let the rate of fireman B be .
Let the rate of fireman C be .
Rate of any fire man is defined as the ratio of number of rungs of ladder he climbed to the time he takes to climb them.
It is given that fireman A takes seconds for
rungs.
=
.
It is given that fireman B takes seconds for
rungs.
=
.
It is given that fireman C takes seconds for
rungs.
=
.
It is evident from above data that fireman B,C climb ladder at the same rate.
Answer:
Answer:
Permutation:
In mathematics, a permutation of a set is, loosely speaking, an arrangement of its members into a sequence or linear order, or if the set is already ordered, a rearrangement of its elements. The word "permutation" also refers to the act or process of changing the linear order of an ordered set.
Formula:
Example:
Permutations are the different ways in which a collection of items can be arranged. For example, the different ways in which the alphabets A, B and C can be grouped, taken all at a time, are ABC, ACB, BCA, CBA, CAB, BAC. Note that ABC and CBA are not the same as the order of arrangement is different.
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In mathematics, a combination is a selection of items from a collection, such that the order of selection does not matter.
Formula:
Example:
Combination: Picking a team of 3 people from a group of 10.
C(10,3) = 10!/(7! * 3!) = 10 * 9 * 8 / (3 * 2 * 1) = 120.
Probability:
Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates the impossibility of the event and 1 indicates certainty.
Formula:
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Example:
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