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Stella [2.4K]
3 years ago
6

Please help. this is really confusing​

Mathematics
1 answer:
andreev551 [17]3 years ago
3 0
<h3>Answer:  t = 43</h3>

====================================================

Explanation:

Inscribed angle ADB subtends the minor arc AB. Inscribed angle ACB subtends the same minor arc AB. The rule is that if two inscribed angles subtend the same arc, then they are the same measure.

We can prove this with the inscribed angle theorem which says

central angle = 2*(inscribed angle)

Let's say point E is the center of the circle. By the inscribed angle theorem, we know that,

angle AEB = 2*(angle ADB)

angle AEB = 2*43

angle AEB = 86

Then we go in reverse of this process to find angle ACB

angle AEB = 2*(angle ACB)

86 = 2*(angle ACB)

2*(angle ACB) = 86

angle ACB = 86/2

angle ACB = 43

So this is how we prove the two inscribed angles are congruent.

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Evaluate u + xy , for u = 2, x = 9, and y = 6.
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Answer:

56

Step-by-step explanation:

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3 0
2 years ago
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Can someone please check this?
hodyreva [135]
That’s right cuz there’s 2 cubes in height and if one cube is 4ft then 2 would be 8ft
6 0
9 months ago
If m∠BEC = 9z + 45 in rhombus ABCD, find the value of z. Help me PLEASE!!!! And can you show me how you did it Please!
cupoosta [38]
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3 years ago
Find the volume of the parallelepiped with adjacent edges PQ, PR, and PS. P(1, 0, −1), Q(3, 3, 0), R(3, −3, 0), S(1, −2, 2)
topjm [15]

Answer:

the volume of the parallelepiped is = 36  

Step-by-step explanation:

given,

P(1, 0, −1),      Q(3, 3, 0),      R(3, −3, 0),     S(1, −2, 2)

PQ = Q - P = (2, 3, 1)

PR = R - P  = (2, -3 , 1)

PS = S - P  = (0, -2 , 3)

now volume of parallelopiped

[PQ PR PS] = \begin{bmatrix}2 & 3 &1 \\ 2 & -3 &1 \\ 0 & -2 &3 \end{bmatrix}

now calculating determinant of the matrix

        = 2 (-9+2) -  3 (6-0) + 1 (-4-0)

        = -14  - 18  - 4

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hence , the volume of the parallelepiped is = 36  

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