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2 years ago

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Mathematics

1 answer:

Slav-nsk [51]2 years ago

3 0

Triangles ABC and DEF may or may not be congruent, because the angle-angle-angle (AAA) postulate is not a criterion for congruency of any two triangles. This is because the angle-angle-angle postulate only incorporates the angles of the triangles, and the side lengths are not specified, so congruency may or may not be true for these triangles.

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Which phrase could the expression x-4 represent? a number less than 4 the difference of a number and 4 the sum of a number and 4

ioda

Answer:

Four less a number

Step-by-step explanation:

x-4 is literally subtracting 4 and 4 less a number is basically also subtracting 4 from an equation.

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2 years ago

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I heard an interesting story on the news last night about a guy from Seattle. In this story, Bryant was having a problem with re

ahrayia [7]

I don’t know the answer

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2 years ago

Find the volume of the solid of revolution formed by rotating about the x--axis the region bounded by the given curves.

amm1812

Answer:

$V = \frac{8\pi}{3}$

Step-by-step explanation:

For this case we are interested on the region shaded on the figure attached.

And we can find the volume with the method of rings.

The area on this case is given by:

$A(x) = \pi [f(x)]^2 = \pi r^2 = \pi [3x]^2 = 9\pi x^2$

And the volume is given by the following formula:

$V= \int_{a}^b A(x) dx$

For our case our limits are x=0 and x=2 so we have this:

$V = \pi \int_{0}^{2} x^2 dx$

And if we solve the integral we got this:

$V= \pi [\frac{x^3}{3}]\Big|_0^{2}$

And after evaluate we got this:

$V=\pi [(\frac{8}{3} )-(\frac{0}{3} )]$

$V = \frac{8\pi}{3}$

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2 years ago

G.O. HAS 3 ORANGE PICKS FOR EVERY 2 GREEN. IF THERE ARE 25 PICKS IN ALL, HOW MANY PICK ARE ORANGE?

Zanzabum

Answer:

There are 15 orange picks when we have 25 picks total

Step-by-step explanation:

orange: green : total

3 2 5

We found the total by adding the orange and the green

We have 25 total picks

25/5 = 5

We need to multiply by 5 on everything to get to 25 picks

orange: green : total

3 *5 2*5 5*5

15 10 25

There are 15 orange picks when we have 25 picks total

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2 years ago

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What is the slope of the line represented by the equation y = –2/3 – 5x

Nookie1986 [14]

The equation is of the form y = mx + c, where m is the slope and c just a constant. In this example, m=-5 and c=-2/3, so the slope is -5. The -2/3 is just a vertical offset and is irrelevant.

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3 years ago