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Mathematics

2 answers:

Natali [406]3 years ago

5 0

Answer:

See below

Step-by-step explanation:

Proportional relationship formula:
y = kx

As per given we have:

Salesman A

p(s) = 65s (p = $1300 maximum)
This is a proportional relationship, $65 per each sale. But this is restricted to 20 sales.
Answer is yes (ignoring the restriction)

Salesman B

p(s) = 40s + 300
This is a linear but not proportional relationship
Answer is no

Salesman C

p(s) = 900
There is no relationship between sales number and weekly earning as it is a fixed salary
Answer is no

STatiana [176]3 years ago

4 0

AnswerSUCK POOP EJEEH HEEH C;

Step-by-step explanation:

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Which is the polynomial function of lowest degree with rational real coefficients, a leading coefficient of 3 and roots StartRoo

anastassius [24]

Answer:

$a) f(x)=3x^{3}-6x^{2}-15x+30$

Step-by-step explanation:

1) In this question we've been given "a", the leading coefficient. and two roots:

$x_{1}=\sqrt{5}\:x_{2}=2$

2) There's a theorem, called the Irrational Theorem Root that states:

If one root is in this form $x'=\sqrt{a}+b$ then its conjugate $x''=\sqrt{a}-b$ . is also a root of this polynomial.

Therefore

$x_3=-\sqrt{5}$

3) So, applying this Theorem we can rewrite the equation, by factoring. Remembering that x is the root. Since the question wants it in this expanded form then:

$f(x)=3(x-\sqrt{5})(x+\sqrt{5})(x-2)\Rightarrow 3x^{3}-6x^{2}-15x+30$