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4 years ago

Help!!!! I know the answer for #22 is -2730 but I don't know how to get it?

Mathematics

1 answer:

Greeley [361]4 years ago

3 0

You are to sum
-1 * 2^1
-1 * 2^3
-1 * 2^5
-1 * 2^7
-1 * 2^9
-1 * 2^11

which equals
-2
-8
-32
-128
-512
-2,048

which totals -2,730

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Crazy boy [7]

Answer:

Hey I'm sorry I didn't get to answer your question it's just that I need the points because I don't have enough to get help with my question. I hope you get the answer that you need for you question. Good Luck :)........

Step-by-step explanation:

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3 years ago

Help me out the meaning

WITCHER [35]

slope intercept form:

y = mx + b

m = slope

b = y-intercept

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y = mx + 4

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this could also be:

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3 years ago

2. The actual tree on the left is 10 feet tall. The model tree on the right is 8 inches tall. What is the scale factor?

Lina20 [59]

Answer:

D. 1/15

Step-by-step explanation:

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3 years ago

2) Brian purchased pens for 75 cents each and pencils for 40 cents each he

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Step-by-step explanation:

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4 years ago

The point P(1,1/2) lies on the curve y=x/(1+x). (a) If Q is the point (x,x/(1+x)), find the slope of the secant line PQ correct

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Answer:

See explanation

Step-by-step explanation:

You are given the equation of the curve

$y=\dfrac{x}{1+x}$

Point $P\left(1,\dfrac{1}{2}\right)$ lies on the curve.

Point $Q\left(x,\dfrac{x}{1+x}\right)$ is an arbitrary point on the curve.

The slope of the secant line PQ is

$\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{\frac{x}{1+x}-\frac{1}{2}}{x-1}=\dfrac{\frac{2x-(1+x)}{2(x+1)}}{x-1}=\dfrac{\frac{2x-1-x}{2(x+1)}}{x-1}=\\ \\=\dfrac{\frac{x-1}{2(x+1)}}{x-1}=\dfrac{x-1}{2(x+1)}\cdot \dfrac{1}{x-1}=\dfrac{1}{2(x+1)}\ [\text{When}\ x\neq 1]$