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olganol [36]
3 years ago
6

I REALLY NEED HELP!!!!

Mathematics
2 answers:
Anna35 [415]3 years ago
8 0
Divide x^4+x^3+7x^2-6x+8 by x+2+2x+8 using long polynomial division.

Answer:
x^2-x+1
dangina [55]3 years ago
4 0

Answer:

x²-x+1

Step-by-step explanation:

We write the dividend, x⁴+x³+7x²-6x+8, under the division box.  We write the divisor, x²+2x+8, outside the box to the left.

We see how many times x² goes into x⁴.  It will go x² times.  We write this on the line above the dividend.  We multiply back through;

x²(x²+2x+8) = x⁴+2x³+8x²

We write this under the first three terms of the dividend.  We then subtract:

(x⁴+x³+7x²)-(x⁴+2x³+8x²) = -1x³-1x²

This goes below the subtraction.  We bring down the next term, -6x.

Next we see how many times x² goes into -1x³.  It goes -x times; we write this beside the x² in the quotient.  We multiply back through:

-x(x²+2x+8) = -x³-2x²-8x

This goes below the -1x³-1x²-6x.  We subtract the two:

(-1x³-1x²-6x)-(-x³-2x²-8x) = -1x³+1x³-1x²+2x²-6x+8x = 1x²+2x

We write this below the last line in the work.  We bring down the last term, 8.

Now we see how many times x² goes into 1x².  It goes 1 time; since this is positive, we write +1 beside the answer we have at the top.  Multiply back through:

1(x²+2x+8) = x²+2x+8

Now we subtract:

(x²+2x+8)-(x²+2x+8) = 0

This makes our answer x²-x+1

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1,9,4,6,8,8 which is the median
vladimir1956 [14]
<h3>Answer:  Median = 7</h3>

=======================================================

Explanation:

Sort the values from smallest to largest. Doing so leads to the list {1,4,6,8,8,9}

Since the set is small enough, you can probably notice that the middle most number is a tie between the 6 and the first 8. The midpoint is (6+8)/2 = 14/2 = 7.

The median is 7.

---------------

If you wanted, you could cross off the first and last items of the set

That means we go from {1,4,6,8,8,9} to {4,6,8,8}

Then repeat to get the smaller set {6,8}

This shows we have a tie between the 6 and 8 as the middle most item, and why 7 is the median (since 7 is the midpoint between 6 and 8).

4 0
3 years ago
Challenge A warehouse store sells 5.5-ounce cans of tuna in packages of 8. A package of 8 cans
Stolb23 [73]

Answer:

Step-by-step explanation:

the warehouse is the best buy because you get 44oz off tuna but if you buy the three pack you get 19.5oz and if you buy the five pack from store you 22.5oz of tuna

so the warehouse has the best deal on tuna

4 0
3 years ago
What is the value of the expression 2 over 3 subtracted by 5 over 6 divided by 3 over 4
Tju [1.3M]
I did the problem and I got negative 4 over 9
5 0
3 years ago
Read 2 more answers
An Internet reaction time test asks subjects to click their mouse button as soon as a light flashes on the screen. The light is
Ganezh [65]

Answer:

(a) 0.20

(b) 31%

(c) 2.52 seconds

Step-by-step explanation:

The random variable <em>Y</em> models the amount of time the subject has to wait for the light to flash.

The density curve represents that of an Uniform distribution with parameters <em>a</em> = 1 and <em>b</em> = 5.

So, Y\sim Unif(1,5)

(a)

The area under the density curve is always 1.

The length is 5 units.

Compute the height as follows:

\text{Area under the density curve}=\text{length}\times \text{height}

                                          1=5\times\text{height}\\\\\text{height}=\frac{1}{5}\\\\\text{height}=0.20

Thus, the height of the density curve is 0.20.

(b)

Compute the value of P (Y > 3.75) as follows:

P(Y>3.75)=\int\limits^{5}_{3.75} {\frac{1}{b-a}} \, dy \\\\=\int\limits^{5}_{3.75} {\frac{1}{5-1}} \, dy\\\\=\frac{1}{4}\times [y]^{5}_{3.75}\\\\=\frac{5-3.75}{4}\\\\=0.3125\\\\\approx 0.31

Thus, the light will flash more than 3.75 seconds after the subject clicks "Start" 31% of the times.

(c)

Compute the 38th percentile as follows:

P(Y

Thus, the 38th percentile is 2.52 seconds.

4 0
3 years ago
Clara ate 1/8 of the pie Jacob ate 1/4 how much of the pie did they ate
nika2105 [10]
They ate 3/8 of the pie because 1/4=2/8 .and 1/8+2/8=3/8. Hope this helps
5 0
3 years ago
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