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4 years ago

A bag contains many different colored marbles. In fact you know the following ...

1 answer:

4 0

I believe it is C as it would have 2 different marbles each draw and I think there is only one marble for each color so it cant be d and b is possible but you can't only draw two colors if there is still two more and A is as if u are drawing one marble each time

the answer is c

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Find a polynomial function of lowest degree with real coefficients having zeroes of 2 and -Si (Show all work to earn credit.)

antoniya [11.8K]

Answer: The required polynomial of lowest degree is $p(x)=x^3-2x^2+25x-50$

Step-by-step explanation: We are given to find a polynomial function of lowest degree with real coefficients having zeroes of 2 and -5i.

We know that

if x = a is a zero of a real polynomial function p(x), then (x - a) is a factor of the polynomial p(x).

So, according to the given information, (x - 2) and ( x + 5i) are the factors of the given polynomial.

Also, we know that complex zeroes occur in conjugate pairs, so 5i will also be a zero of the given polynomial.

This implies that (x - 5i) is also a factor of the given polynomial.

Therefore, the polynomial of lowest degree (three) with real coefficients having zeroes of 2 and -5i is given by

$p(x)=(x-2)(x+5i)(x-5i)\\\\\Rightarrow p(x)=(x-2)(x^2-25i^2)\\\\\Rightarrow p(x)=(x-2)(x^2+25)\\\\\Rightarrow p(x)=x^3-2x^2+25x-50$

Thus, the required polynomial of lowest degree is $p(x)=x^3-2x^2+25x-50$

4 0

4 years ago

Help me on 12 and 13 please and fast

lys-0071 [83]

Answer:

12. B , 13. 4

Step-by-step explanation:

$12. \frac{3}{12}+\frac{1}{12} +\frac{2}{12} =\frac{6}{12} =\frac{1}{2} \\13. 5-(\frac{2}{10} *5)=4$

3 0

4 years ago

Can someone please help me??? And please be sure of ur answer :)

Rina8888 [55]

Answer:

1. is the last one.

2. is the 3rd one.

3. is the first one.

4. is the 2nd one.

Step-by-step explanation:

What you do is you have to get the letter by itself and it all depends on the less than or greater than signs.

For #1. -m+8>6. What you do is you minus 8 from both sides to get -m>-2. You still have a -m so you need to divide both sides by a -1. (one thing to remember is when you divide by a negative you have to switch the sign.) So your answer will be m<2. That will make the last graph the answer.

For #2. -2p< or equal to -10. What you do is divide by -2. and you need to remember to switch the sign. So your answer is p> or equal to 5.

You will do the same for the other two equations but your answers are.

#1. is the last one graph.

#2. is the 3rd one graph.

#3. is the first one graph.

#4. is the 2nd one graph.

3 0

4 years ago

Which kind of material is used to make the positive electrode of a dry cell? A. Steel cover. B. Carbon rod C. Electrolyte paste

uysha [10]

A dry cell is usually made of two parts: a zinc can which serves as the anode with a negative potential and inert carbon rod is the positive cathode.
According this definition, carbon rod is used to make the positive electrode of a dry cell.
Correct answer: B

6 0

4 years ago

Which angle refers to the same angle as \angle DEF∠DEFangle, D, E, F?

Sergio039 [100]

Answer:

Option

Step-by-step explanation:

If you look at the angle, it's an acute angle so it narrows your choices down a lot. Another indicator is the green lines showing similar angles.

8 0

2 years ago