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Mathematics

1 answer:

Papessa [141]3 years ago

6 0

Which question? There are 2 different questions here .

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PLEASE HELP !! Which graph shows a constant of proportionality of 2?

kherson [118]

Answer:

Step-by-step explanation:

it rises 2 and goes to the right once; 2/1 = 2

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4 years ago

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A. 50 B. 65 C. 115 D. 55

djverab [1.8K]

Answer:

C. 115 degrees

Step-by-step explanation:

Angles 6 and 8 are the same so they both have the same degrees

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3 years ago

A jeweler must spend less than $300 to order gems for bracelets and necklaces

Elden [556K]

Answer:

20 bracelets and 10 necklaces

Step-by-step explanation:

If he wants to make 10 more bracelets than necklaces, you know the bracelets must be at least 10 more than the necklaces.

looking at the answer, the only one that satisfies this is the last one:

20 bracelets and 10 necklaces.

The graph really does not help you here.

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4 years ago

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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

lukranit [14]

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

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