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VMariaS [17]
3 years ago
9

Given a = 2i+j – 2k b= -1 – 7j+k Find a x b

Mathematics
1 answer:
castortr0y [4]3 years ago
7 0

Step-by-step explanation:

a = 2i + j - k

b = -1 -7j + k

a × b = (2i + j - k) (-1 + 7j + k)

-2i + 14ij + 2ik - j + 7j^2 + jk + k -7jk - k^2

-2i + 14ij + 2ik -j +7j^2 +jk - 7jk + k - k^2

-2i + 14ij + 2ik - j +7j^2 - 6jk + k - k^2

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Use partial quotients 6 divided by 258
dybincka [34]
258 = 240 + 18
258: 6 = (240 + 18) : 6 = 240 : 6 + 18 : 6 = 40 + 3 = 43

Your answer is 43.
6 0
3 years ago
What are the measures of 1 and 2? 37.1 1 2 17.30 121.8°​
Lady_Fox [76]

Answer:

Option 2 : m∠1 = 67.4°, m∠2 = 104.5°

Step-by-step explanation:

Lets find the measure of angle 2 first:

180° - 17.3° - (180° - 121.8°) = Angle 2

                             ↑

             Angle of the straight line = 180°

             The angle should be 180 - 121.8

Angle 2 = 104.5

At this point the only answer that works is the second option, but let's still work out Angle 1

Angle 1 :

Theory of opposite angles state that the opposite angles inside a triangle = the exterior angle

in this case:

Angle 1 + 37.1 = Angle 2

Since we know angle 2 = 104.5, lets solve

Lets say angle 1 = x

x + 37.1 = 104.5

x = 104.5 - 37.1

x = 67.4

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

8 0
3 years ago
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0.08 is 10 times as great
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Answer: 0.08 is 10 times as great as 0.008

Step-by-step explanation: 0.008 x 10 = 0.08

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2 years ago
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A parabola has a vertex at the origin. The focus of the parabola is located at (–2,0).
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dam what Answer:

Step-by-step explanation:dom

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5 0
3 years ago
Solve 3/5b = 24 help me
STALIN [3.7K]
You would multiply by the reciprocal (flip the fraction)
5/3 * 24 = 40
b = 40
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4 years ago
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