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3 years ago

BRAINLIEST PLEASE HELP!!!!

Mathematics

1 answer:

taurus [48]3 years ago

5 0

Answer:

A. 2x + (-x + 2) = -1

Step-by-step explanation:

Well if we use x + y = 2 as the substitute we need to solve for y.

x + y = 2

-x to both sides

y = -x + 2

Substitute

2x + (-x + 2) = -1

Thus,

the answer is A. 2x + (-x + 2) = -1.

Hope this helps :)

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Urgent I need help pls

Mandarinka [93]

11

Explanation:
Graphing calculator

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3 years ago

\sum_{n=1}^{\infty } ((-1^n)/n)x^n Find the interval of convergence.

Lorico [155]

Answer:

(-1,1).

Step-by-step explanation:

We need to calculate $\lim_{n \to \infty}\frac{| a_{n+1}|}{| a_{n}|} = \frac{1}{R}$ where R is the radius of convergence.

$\lim_{n \to \infty}\frac{\frac{|(-1)^{n+1}|}{|n+1|}}{\frac{|(-1)^{n}|}{|n|}}$

$\lim_{n \to \infty}\frac{\frac{1}{|n+1|}}{\frac{1}{|n|}}$

$\lim_{n \to \infty}\frac{|n|}{|n+1|}$

Applying LHopital rule we obtaing that the limit is 1. So $1=\frac{1}{R}$ then R = 1.

As the serie is the form $(x+0)^{n}$ we center the interval in 0. So the interval is (0-1,0+1) = (-1,1). We don't include the extrem values -1 and 1 because in those values the serie diverges.

4 0

4 years ago

32=2 to the what power

Andrew [12]

This question also translates to: How many times do you multiply 2 times itself to get 32? The answer is 5 because you multiply 2 times itself 5 times to get 32.

3 0

4 years ago

Which equation does NOT have infinitely many solutions?

svlad2 [7]

Answer:

3. is infinitely many solutions because the answer is 0=0

Step-by-step explanation:

3) 6x+4=6x+4

0=0

4 0

3 years ago

A circular tabletop has a circumference of 94.2 inches. What is its approximate area?

kiruha [24]

Since Circumference is $C=2 \pi r$
So to get Area, you have to get the radius first:
$C=(2)3.14r$ , which is $94.2=6.28r$
Next we divide both sides by $6.28$ to get:
$Radius=15in.$
Now we have to get the area which is $A= \pi r^2$
Plug in 15 for r, you should get $A=[(3.14)(15)]^2$
Final Answer: $A=706.86in.$

6 0

4 years ago

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