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Aleks04 [339]
3 years ago
6

What is the product of -2x^3 + x - 5 and x^3 - 3x - 4? Are the products equal to those of x^3 - 3x - 4 and -2x^3 + x - 5? Explai

n
I am soooo lost on working this out.
Mathematics
1 answer:
Tom [10]3 years ago
4 0

Answer:


Step-by-step explanation:

(  -2x³ + x - 5) × ( x3 - 3x - 4)

= ( -2x³)×( x3 - 3x - 4) +(x)×( x3 - 3x - 4) - (5)( x3 - 3x - 4)

= - 2x^6  +6x^4 +8x³ + x^4 - 3x² -4x - 5x³ +15x + 20

= - 2x^6  +7x^4 +3x³-3x²+11x +20



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Answer:

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Step-by-step explanation:

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3 years ago
PLLLLLLSSSSSS Help Will Mark Brainlest but must explain what you did in 20 minutes
padilas [110]

Answer:

A) The price of product A is increasing by 3% per year.

(B) The product A recorded a greater percentage change in price over the previous year.

Step-by-step explanation:

(A)

The function representing the price, in dollars, of product A after x years is:

FA(x)=0.69*(1.03)x

The function  FA(x)can be written as:

FA(x)=0.69*1+(0.03)x

The function FA(x) is similar to the exponential growth function, y=a(1+r)x .

Here r is the growth rate.

Thus, it can be said that the price of product A is increasing by 3% per year.

(B)

Consider the data of product B for the year 3 and 4.

The price of product B for year 3 and 4 are 10,303.01 and 10,406.04.

Compute the percent price change from year 3 to 4 as follows:

10406.04-10303.01/10303.01*100

which is 0.999%

~1%

The price of product B is increasing by 1% per year.

Thus, the product A recorded a greater percentage change in price over the previous year.

4 0
3 years ago
Point D is on line segment CE. Given CE=11 and CD=9, determine the length DE
Valentin [98]
11
•——-•——•
C D E
9 2
Because the line CE is 11, you will need to subtract it by 9 to find line DE.
11-9=2
To check your work you may add 9 and 2 to find out if it comes out to 11 and it does.
7 0
3 years ago
Explain the answer please
valentina_108 [34]
The area of a square is the square of the length of its side. Here, we're told that the side of each square is equal to the radius (r) of the circle. Then the area of each square is
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There are 3 of them, so their total area is
.. Aall_squares = 3*r^2

The area of a circle is given by the formula
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Fernie wants to compare the area of the 3 squares to that of the circle. We know that the value of π is about 3.1416, a little more than 3, so we have
.. Aall_squares = 3*r^2
.. Acircle ≈ 3.1416*r^2

We notice that 3.1416 is more than 3, so the area of the circle is greater than the area of Fernie's 3 squares.


___
It is not clear to me that Fernie's drawing will explain the formula A = π*r^2, unless it can somehow be used to show that the parts of each square that are outside the circle add up to an amount that is slightly less than the uncovered part of the circle.
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4 years ago
Line d has a slope of 7/6. Line e is perpendicular to d.what is the slope of line e?
Elenna [48]

Answer:

Step-by-step explanation:

The slope of line e is -6/7

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