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3 years ago

Slope (-3,0 2,0 3,4 )

Mathematics

1 answer:

PtichkaEL [24]3 years ago

3 0

Answer:

undefined

Step-by-step explanation:

so you can just pick 2 points. use -3,0, and 2,0. so to get from -3 to 2(becusse slope is change of y over change of x) you add 5. to get from 0 to 0, you would add zero. so, 5/0=undefined. I'm not quite sure why thered 3,4. in that case it may just not be a function

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Priya drew a circle whose area is 25 cm. Dan drew a circle whose diameter is 4 times the radius of Priya's circle. How many time

Vitek1552 [10]

Answer:

400

Step-by-step explanation:

first work out the radius of priya's circle with the equation a = $\pi r^{2}$

$25 = \pi r^{2}$

$\frac{25}{\pi } = r^{2}$

$r = \sqrt{\frac{25}{\pi } }$

we know the diameter of a circle is 2 times the radius so the diameter of priya's circle is 2x $\sqrt{\frac{25}{\pi } }$

this means that if the diameter of dan's circle is 4 times bigger it must be

8x $\sqrt{\frac{25}{\pi } }$

to find the radius of dan's circle we divide the diameter by to 2 to give

4x $\sqrt{\frac{25}{\pi } }$

then use the a= $\pi r^{2}$ equation again

$a= (4 \sqrt{\frac{25}{\pi } })^{2} \pi$

which equals 400

hope that helped

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Read 2 more answers

-70y^2+90x^3+100yx^2-63xy<br>factor by grouping

Alexeev081 [22]

The idea of grouping is to get the terms in groups that allow you to factor out from each group something that becomes a factor in itself, leaving two factors behind that are alike. Like this: rearrange those terms so they are in this order:
(-70y^2 - 63xy) + (90x^3 + 100yx^2). Now out of the first set we are going to factor out a -7y, and out of the second set we are going to factor out a 10x^2. When we do this, this is what we get: -7y(10y + 9x) + 10x^2(9x + 10y). As you can see, what's inside both sets of parenthesis is the same, just in a different order. We can factor that out now, leaving (9x + 10y)(10x^2 - 7y). And that is factored by grouping.

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3 years ago