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Scilla [17]
3 years ago
13

Please Help!!!! I NEED THIS

Mathematics
1 answer:
kicyunya [14]3 years ago
3 0
Cora earned $40 and Dora earned $60...label the graph in values of tens and plot accordingly...this might be wrong but I think it’s the best answer
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Show that the plane and line with the given equations intersect, and then find the acute angle of intersection between them. (Gi
Reptile [31]

Answer:

  angle of intersection: 5.2°

Step-by-step explanation:

The direction vector normal to the plane is ...

  n = (1, 1, 3)

The direction vector of the line is ...

  m = (1, -3, 1)

Then the angle θ between them can be found from the dot product:

  n•m = |n|·|m|·cos(θ)

  (1·1 +1(-3) +3·1) = 1 -3 +3 = 1 = √(1²+1²+3²)·√(1²+(-3)²+1²)·cos(θ)

  1 = 11·cos(θ)

  θ = arccos(1/11) ≈ 84.8°

This is the angle between the line and the normal to the plane, so the angle between the line and the plane will be the complement of this. Since this angle is not 90°, <em>the line and plane must intersect</em>.

  acute angle = 90° -84.8° = 5.2°

_____

The attached graph shows the line and plane meet at a shallow angle, consistent with the above answer.

8 0
3 years ago
How do you solve for the segment area in a circle?
Aleks04 [339]
The area of the entire sector of DEF = 60 / 360 * PI * radius^2
sector area = 1 / 6 * 3.14159265... * 20^2
sector area = <span> <span> <span> 209.4395102393 </span> </span> </span>

segment area = sector area - triangle DEF Area
triangle DEF Area = (1/2) * 20 * sine 60 * 20
triangle DEF Area = (1/2) * 0.86603 * 400
triangle DEF Area = <span><span><span>(1/2) * 346.412 </span> </span> </span>
triangle DEF Area = <span> <span> <span> 173.206 </span> </span> </span>

segment area = <span> <span> 209.4395102393 </span> -173.206
</span>
segment area = <span> <span> <span> 36.2335102393 </span> </span> </span>
segment area = 36.23 m

Source:
http://www.1728.org/circsect.htm



6 0
3 years ago
La somme de l age de Anaise de sa mère et de sa grand mère est égale a 130 anaise a le tière de l age de sa mere s mere a le dou
stealth61 [152]
Headshot snipe (use english)
3 0
2 years ago
Read 2 more answers
A group of 16 people is choosing a chairperson and vice-chairperson. They put all 16 people's names into a hat. The first name d
Strike441 [17]

Answer:

2 in 16

Step-by-step explanation:

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2 years ago
The number 84 can be expressed as the sum of 54 + 30. Which shows how to use the distributive
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Answer:I onesly dont no

Sorry I have no friends

Step-by-step explanation:

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