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masya89 [10]
3 years ago
15

Which property is illustrated by the following equation? - 10 + 8 = 8 + ( - 10 )

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
4 0
I believe it is commutative property cause the numbers didn't change instead they just switched places in the equation.
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What's the measure of the angle indicated with a "?"
marysya [2.9K]

Answer: 108 degrees

Step-by-step explanation:

180 - 72 = 108

3 0
2 years ago
Calculate (A⃗ ×B⃗ )⋅C⃗ for the three vectors A⃗ with magnitude A = 5.08 and angle θA = 25.6 ∘ measured in the sense from the +x
alexgriva [62]

Answer:

(A⃗ ×B⃗ )⋅C⃗ = - 76.415

Step-by-step explanation:

First we need to calculate (A⃗ ×B⃗ ) :

(A⃗ ×B⃗ ) = A.B.sin (α).n

Where A is the magnitude of A⃗

Where B is the magnitude of B⃗

Where α is the angle between A⃗ and B⃗ = 63.9 - 25.6 = 38.3

Finally n is the vector orthogonal to A⃗ and B⃗

n magnitude is 1 and his direction is given by the right hand-rule

so n = ( 0 , 0 , 1 )

(A⃗ ×B⃗ ) = A.B.sin (α).n = 5.08 . 3.94 . sin (38.3) . (0 , 0 , 1 ) = (0,0,12.4)

C⃗ can be written as C.(0,0,-1) because of his +z - direction

C.(0,0,-1) = 6.16.(0,0,-1) = (0,0,-6.16)

(A⃗ ×B⃗ )⋅C⃗ = (0,0,12.4).(0,0,-6.16) = -76.41480787 = -76.415

8 0
3 years ago
Are these parallel, perpendicular, or neither?
Elina [12.6K]
Answer: I think it’s neither

Explanation:

The line is parallel unless the slope is the same and with a different y-intercept

The line are perpendicular unless the one of the slope is the negative reciprocal of the other.

And both equation didn’t meet any of the requirement.
5 0
3 years ago
Please help me with this math problem.
Katena32 [7]

Answer:

19/4

Step-by-step explanation:

3 0
3 years ago
Explain how you I got 0.16
dybincka [34]
So whats the question?
4 0
3 years ago
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