3 years ago

What is the slope of (-3, 1) and (2, -1)

Mathematics

1 answer:

solmaris [256]3 years ago

8 0

Answer:

the slope is -2/5

Step-by-step explanation:

you do y2-y1 on top of the division sign and x2-x1 on the bottom.

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Step-by-step explanation:

1 2/3 (5 2/7)

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Ray is correct because 84/7 = 12

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For what values of k the relation R:{(k2 , 5), (3k, 6)} is not a function?

Nastasia [14]

Answer:

$k=0$ and $k=3$ .

Step-by-step explanation:

To this relation be a function, the horizontal coordinates can't be equal. So, let's find the value of $k$ that makes those coordinates equal.

$k^{2}=3k\\ k^{2}-3k=0\\k(k-3)=0\\$

Using the null factor property, we have

$k=0\\k-3=0 \implies k=3$

Therefore, the given relation is not a function when $k=0$ and $k=3$ .

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3 years ago

Volume & surface! May I please have help

Ludmilka [50]

Answer:

Step-by-step explanation:

surface area of cylinder

=(area of base)×2 + (area of curved surface)

$=(\frac{20}{2} )^{2} \pi$ × 2 + $20\pi$ × 25

=2 × $\pi$ × $10^{2}$ + 2 × $\pi$ × 10 × 25

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3 years ago