Add the following polynomials, then place the answer in the proper location on the grid. Write your answer in descending powers of x.x 4 -3x + 1, 4x 2 - 2x + 8, and x 3 - 9

Answers

Answer 1

Answer: The answer from summing up x^4 - 3x +1, 4x^2 - 2x +8 and x^3 - 9 would be x^4 + x³ + 4x² - 5x. This is adding first the highest power, in this case the highest is 4th power, do we need to add all the variable that is in 4th power then it will be followed by the next lower power.

Answer 2

Answer:

x+^4+x^3+4x^2+10x-9...............................

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6,282 in scientific notation would be _____?
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In a version of the game of roulette, a steel ball is rolled onto a wheel that contains 19 red, 19 black and 2 green slots. If the ball is rolled 25 times, the probability that it falls into the green slots two or more times:___________.

Answers

Answer:

The probability is 0.3576

Step-by-step explanation:

The probability for the ball to fall into the green ball in one roll is 2/1919+2 = 2/40 = 1/20. The probability for the ball to roll into other color is, therefore, 19/20.

For 25 rolls, the probability for the ball to never fall into the green color is obteined by powering 19/20 25 times, hence it is 19/20^25 = 0.2773

To obtain the probability of the ball to fall once into the green color, we need to multiply 1/20 by 19/20 powered 24 times, and then multiply by 25 (this corresponds on the total possible positions for the green roll). The result is 1/20* (19/20)^24 *25 = 0.3649

The exercise is asking us the probability for the ball to fall into the green color at least twice. We can calculate it by substracting from 1 the probability of the complementary event: the event in which the ball falls only once or 0 times. That probability is obtained from summing the disjoint events: the probability for the ball falling once and the probability of the ball never falling. We alredy computed those probabilities.

As a result. The probability that the ball falls into the green slot at least twice is 1- 0.2773-0.3629 = 0.3576

(5a^2 - b^2) - (4a^2 + 3b^2) - (a^2 - 7b^2)

Answers

answer:

3b²

step-by-step explanation:

(5a² - b²) - (4a² + 3b²) - (a² - 7b²)

= 5a² - b² - 4a² - 3b² - a² + 7b²

combine like terms

= 3b²

$(5a^2 - b^2) - (4a^2 + 3b^2) - (a^2 - 7b^2)=\n 5a^2-b^2-4a^2-3b^2-a^2+7b^2=\n 3b^2$

Answer correct for brainliest and get a thanks ! :-)

Answers

i hope this helps you

Decrease £120 by 45%

Answers

120 * 45 % = 120 *0,45 = 54 £

120 -54 = 66 £

£66 multiply 120 by 45 get answer n take it away from 120

What is the general form of the equation of a circle with center at (a, b) and radius of length m?. A. x2 + y2 − 2ax − 2by + (a2 + b2 − m2) = 0 . . B.x2 + y2 + 2ax + 2by + (a2 + b2 − m2) = 0. C. x2 + y2 − 2ax − 2by + (a + b − m2) = 0. D. x2 + y2 + 2ax + 2by + a2 + b2 = -m2.

Answers

The generic equation of the circle is given by:
$(x-xo) ^ 2 + (y-yo) ^ 2 = r ^ 2$
Where,
r: radius of the circle
(xo, yo): center of the circle.
The center of the circle in this case is:
$(xo, yo): (a, b)$
The radius of the circle is:
$r = m$
Substituting values we have:
$(x-a) ^ 2 + (y-b) ^ 2 = m ^ 2$
Rewriting the equation we have:
$x ^ 2 - 2ax + a ^ 2 + y ^ 2 - 2by + b ^ 2 - m ^ 2 = 0x ^ 2 + y ^ 2 - 2ax - 2by + a ^ 2 + b ^ 2 - m ^ 2 = 0$
Answer:
The general form of the equation of a circle with center at (a, b) and radius of length m is:
$x ^ 2 + y ^ 2 - 2ax - 2by + a ^ 2 + b ^ 2 - m ^ 2 = 0$
option A

The general form of the equation of a circle with center at (a, b) and radius of length m is B.x2 + y2 + 2ax + 2by + (a2 + b2 − m2)

the standard equation for a circle is: (x-a)^2 + (y-b)^2 = m^2

x-a)^2 + (y-b)^2 = m^2

means(x-a)(x-a) + (y-b)(y-b) = m^2 then you foil

x^2 - 2ax + a^2 + y^2 - 2by + b^2 = m^2

Which describes the calculations that could be used to solve this problem? Lauren has 42 muffins to pack into boxes and bags. She has one box that will hold 12 muffins. She will put the rest of the muffins into bags. She wants to put 3 muffins into each bag. How many bags of muffins will Lauren be able to make? A. Subtract 42 – 12. Then multiply the difference by 3. B. Add 3 + 12. Then add 42 to the sum. C. Add 42 + 12. Then divide the sum by 3. D. Subtract 42 – 12. Then divide the difference by 3

Answers

The correct answer is D, 'Subtract 42 - 12. Then divide the difference by 3'. Lauren has 42 muffins, and she can put 12 of them into a box, leaving her with 30 muffins to fit into bags. If she can fit 3 muffins in each bag, and she wants to know how many bags she needs, then she needs to divide 30 by 3 to get 10. This means that she will need 10 bags of 3 muffins to completely pack 30 muffins. She started with 42, but 12 of those fit into the original box, so we don't have to worry about it.

Hope this helps!

D
if my calculations are correct
hope this helped

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