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2 years ago

Help me please I will mark 5 stars please it is urgent

Mathematics

1 answer:

Effectus [21]2 years ago

7 0

Answer:

a) 3sec

b) highest point of 50

c) at 0 by 8 sec

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A) Find a polynomial, which, when added to the polynomial 5x2–3x–9, is equivalent to: 18

VMariaS [17]

Answer:

a) $-5x^{2}+3x+27$

b) $-5x^{2}+3x+9$

Step-by-step explanation:

a) Let the required polynomial be p(x).

We have the relation, $5x^{2}-3x-9$ + p(x) = 18

i.e. p(x) = 18 $-5x^{2}+3x+9$

i.e. p(x) = $-5x^{2}+3x+27$

b) Let the required polynomial be q(x).

We have the relation, $5x^{2}-3x-9$ + q(x) = 0

i.e. q(x) = 0 $-5x^{2}+3x+9$

i.e. q(x) = $-5x^{2}+3x+9$

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Try this:
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$\left \{ {{x-y=1} \ [1] \atop {x+y=3} \ [2]} \right.$
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3) answer: (2;1)

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The answer is A: 15*

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Step-by-step explanation:

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