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3 years ago

Find the sum then write it's arithmetic, geometric or neither.

Mathematics

1 answer:

castortr0y [4]3 years ago

3 0

Is -1-2-3-4-5-6= - (1+2+3+4+5+6)=-21

It is an arithmetic sum

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Find the value of w (u(2))

katrin [286]

<h3>Answer: 17</h3>

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Explanation:

We'll start things off by computing the inner function u(2)

Plug x = 2 into the u(x) function

u(x) = -x-1

u(2) = -2-1

u(2) = -3

This tells us that w(u(2)) is the same as w(-3). I replaced u(2) with -3.

We'll plug x = -3 into the w(x) function

w(x) = 2x^2-1

w(-3) = 2(-3)^2 - 1

w(-3) = 2(9) - 1

w(-3) = 18-1

w(-3) = 17

Therefore, w(u(2)) = 17

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

Here's a slightly different approach:

Let's find what w(u(x)) is in general

w(x) = 2x^2 - 1

w(u(x)) = 2(u(x))^2 - 1

w(u(x)) = 2(-x-1)^2 - 1

Then we can plug in x = 2

w(u(x)) = 2(-x-1)^2 - 1

w(u(2)) = 2(-2-1)^2 - 1

w(u(2)) = 2(-3)^2 - 1

w(u(2)) = 2(9) - 1

w(u(2)) = 18 - 1

w(u(2)) = 17

3 0

3 years ago

What is the value of <br><br> n squared −5n+2 when n=−4 ?<br><br><br> pls answer quickly I need help

MatroZZZ [7]

Answer:

The answer is 38.

Step-by-step explanation:

n²−5n+2

=(-4)²-5(-4)+2

=16+20+2

=38

8 0

3 years ago

Read 2 more answers

Find the product. (a2)(2a3)(a2 – 8a + 9) 2a7 – 16a6 + 18a5 2a7 – 16a6 – 18a5 2a8 – 16a7 + 18a6 2a12 – 16a7 + 18a6

Alexandra [31]

Answer:

2 $a^{7}$ - 16 $a^{6}$ + 18 $a^{5}$

Step-by-step explanation:

Given

(a²)(2a³)(a² - 8a + 9) ← multiply the first 2 factors

= 2 $a^{5}$ (a² - 8a + 9) ← distribute the parenthesis by 2 $a^{5}$

= 2 $a^{7}$ - 16 $a^{6}$ + 18 $a^{5}$

3 0

3 years ago

Read 2 more answers

What part of 40 is 16?

kumpel [21]

The answer would to this question would be 16/40 or 40%.

8 0

3 years ago

Which function best fits the following points?

Goryan [66]

Given:

The graph of a scatter plot.

To find:

The function that best fits the given points.

Solution:

From the given graph it is clear that the linear function is the best fit for the given points because the points lie on a straight line or near to it.

So, options B and C are incorrect because they represent exponential and quadratic function respectively.

Let as assume the two points on the graph are (0.80,-12.82) and (2,-12.79).

Using this two points, the equation of line is:

$y-(-12.82)=\dfrac{-12.79-(-12.82)}{2-0.80}(x-0.80)$

$y+12.82=\dfrac{-12.79+12.82}{2-0.80}(x-0.80)$

$y+12.82=0.025(x-0.80)$

$y+12.82=0.025x-0.02$

$y=0.025x-0.02-12.82$

$y=0.025x-12.84$

$y=-12.84+0.025x$

It is the approximate function to the function that is in option A.

Therefore, the correct option is A.

5 0

3 years ago