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3 years ago

7

When turned about its axis of rotation, which shape could have created this three-dimensional object?

2 answers:

Rasek [7]3 years ago

7 0

The first shape, or the triangle with its longest side bordering the line, could have created this three-dimensional object.

nadya68 [22]3 years ago

7 0

When a body is rotating, there is a line that all the parts are turning about. The parts farther away from that line travel on larger circle around that line, so they are moving faster. Parts closer to the line follow smaller circles and move more slowly as a result. Points right on the line do not travel at all.

On the diagram you can see the greatest circle, formed by rotation. The points that form this circle are at the greatest distance from the axis of rotation. So you can see that only first or second options are true. But the second one is false, because the figure is not symmetric and therefore, formed shape must not be symmetric too.

Answer: correct option is A.

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The sum of two positive integers, x and y, is not more than 40. The difference of the two integers is at least 20. Chaneece choo

Butoxors [25]

Answer:

The value of x lies between 20 and 40 and value of y lies between -20 and 10

Step-by-step explanation:

We are given that

$y\leq 40-x$ ....(1)

$y\leq x-20$ ...(2)

First we convert inequality equation into equality equation to find the solution of the given system of inequality equation.

Therefore, we can write as

$y=-x+40$ ...(3)

$y=x-20$ ...(4)

Adding equation (3) and (4) we get

$2y=20$

$y=10$

Substitute y=10 in equation (3) we get

$10=40-x$

$x=40-10=30$

(30,10) is the intersect point of two equation.

Put x=0 in equation (3)

$y=40$

Substitute y=0 in equation (3)

$x=40$

Substitute x=0 in equation (4)

$y=-20$

Substitute y=0 in equation (4)

$x=20$

Substitute x=0 and y=40 and in equation (1)

$40\leq 40$

Hence, the equation is true.Therefore, the shaded region below the line.

Substitute x=0 and y=-20 in equation (2)

$-20\leq -20$

The equation is true. Hence, the shaded region is below the line.

Hence, the value of x lies between 20 and 40 and value of y lies between -20 and 10.

5 0

3 years ago

Read 2 more answers

suppose a circle with center (1,-3) passes through point (1,-1). Which equation represents the circle ?

horsena [70]

Answer:-4

Step-by-step explanation:

4 0

3 years ago

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Daniel got in his car at 2:15 P.M. and started driving toward his grandmother's house. After driving for 2 hours and 31 minutes,

Zielflug [23.3K]

2:15+2:31=4:46
4:46+1:16=5:62=6:02
6:02+2:56 =8:56pm or 20:56

7 0

2 years ago

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A castle has to be guarded 24 hours a day. Five knights are ordered to split each day’s guard duty equally. How long will each k

Kisachek [45]

I think that is 248 min in one day because 24/5 is 4.8. 4hours and 8 min. 4 times 60 is 240. 240 plus 8 is 248 this is what I think.

7 0

3 years ago

If g(x) = x4<img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" id="TexFormula1" title="x^{2}" alt="x^{2}" align="absmiddle" class="l

ELEN [110]

Answer: 69,904

Explanation:
g(-16)= (-16)^4-(-16)^3+(-16)^2-(-16)
g(-16)= (65,536)-(-4,096)+(256)-(-16)
g(-16)= 65,536+4,096+256+16
g(-16)=69,904

4 0

3 years ago