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2 years ago

What three-dimensional object would be generated by the rotation of the semi circle about the x axis ?

1 answer:

4 0

If a semicircle is rotated about the x axis of the graph then the resulting three dimensional shape will be a sphere.

Given a semicircle on a graph.

A semicircle is a half circle .A sphere is a geometrical object that is a three dimensional shape , It is the set of points that are all at the same distance r from given point in three dimensional shape.

Rotation is basically an action of rotating around an object or an axis.

If a semicircle is rotated about x axis then the resulting figure will be a sphere. This is because of the fact that when the semi circle is rotated about the x axis then all the points will be at equal distance in all directions from the center.

Hence if a semicircle is rotated about x axis then the resulting figure will be a sphere.

Learn more about sphere at brainly.com/question/1293273

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Polygon PQRS, shown in the figure, is dilated by a scale factor of 0.5 with the origin as the center of dilation, resulting in p

nata0808 [166]

Based on the above:

The slope of P'Q' is = -3/2

The length of P'Q' is approximately = $\sqrt[3]{13}$

<h3>What is the polygon about?</h3>

The slope of P'Q'

= -6/4 = -3/2

The length of P'Q' =

P'Q' = $\sqrt{6^2 + 4^2}$

= $\sqrt{52}$

= $\sqrt[2]{13}$

Therefore;

P'Q' = $\frac{3}{2}$

P'Q' = $\frac{3}{2}$ x $\sqrt[2]{13}$

= $\sqrt[3]{13}$

Learn more about polygon from

brainly.com/question/1592456

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7 0

2 years ago

Clare is painting some doors that are all the same size. She used 2 liters of paint to cover 135 doors. How many liters of paint

pashok25 [27]

Answer:

uhh 25%

Step-by-step explanation:

4 0

3 years ago

The time (X) to complete a standardized exam is approximately normal with a mean of 70 minutes and standard deviation of 10 minu

notka56 [123]

Answer:

77.88 minutes

Step-by-step explanation:

Given that :

Mean (m) = 70

Standard deviation (s) = 10

For 80% of student to complete the exam. In the given time

Using the formula :

Zscore = (X - mean) / standard deviation

80th percentile = 80/100 = 0.8 has a Zscore = 0.7881

0.7881 = (X - 70) /10

0.7881 * 10 = X - 70

7.881 = X - 70

7.881 + 70 = X

77.881 = X

Hence, 77.88 minutes should be given

5 0

3 years ago

Combine like terms.<br> - 2x - 14 = -3.- 1

UNO [17]

Answer:

combine -3-1

$- 2x - 14 = - 4$

if you want to solve for x then you would move the -14 to the left buy adding 14 to both sides.

$- 2x - 14 = - 4 \\ \: \: \: \: \: \: \: \: \: \: \: + 14 \: \: + 14$

your equation there will be

$- 2x = 10$

then you will divide -2 on both sides

$\frac{ - 2x}{ - 2} = \frac{10}{ - 2}$

finally x will equal

$x = - 5$

3 0

3 years ago

Really need help with these 5 problem do all if you can or as many as you can thank you!

gtnhenbr [62]

1. the factors of 24 are 1, 24, 2, 12, 3, 8, 4, and 6. Each pair, fx. 1 and 24 with be 24 when multiplied. 2. Quaderant 3, quaderants go from 1 to 4 counterclockwise, and a (negative x, negative y ), will be in the 3rd quaderant if you go counterclockwise. 3. 7×x, the answer is simple 7 and x, with the key words "product of" which signify multiplication so it will be 7 times x.

8 0

3 years ago