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denis-greek [22]
3 years ago
12

Wassup brainly peeps, one thing i need for you guys is to answer this question and you can land onto the brainliest plane.

Mathematics
1 answer:
Free_Kalibri [48]3 years ago
5 0

Answer:

(B) i think

Step-by-step explanation:

comment how it help

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Suppose n(U) = 150, n(A) = 35, and n(B) = 89.<br> (a) If n(A U B) = 90, find n(A n B).
avanturin [10]

Answer:

34

first of all use formula:

n(AUB)=n(A)+n(B)-n(AnB)

4 0
3 years ago
Find the value of c using the diagram below
vesna_86 [32]

Check the picture below.


notice that 146° is sitting on a flat-line, and thus it has a sibling linear angle, namely 34°.

now, recalling that a triangle has a sum of 180° for all interior angles, the missing one is 126°, and incidentally that is a corresponding angle with "c".

8 0
3 years ago
Determine whether the triangles are congruent. Explain your reasoning .
Nookie1986 [14]

Answer:

Step-by-step explanation:

First use the fact that the sum of interior angles of a triangle is 180° to find the measure of the missing angle

in ΔDEF we have 180 -68 -81 = 31°

in ΔABC we have 180 -68 -33 = 79°

the measure of the angles in ΔABC and ΔDEF are different 33°, 68°, 79° ≠81°, 68°, 31°so the two triangles are not congruent.

6 0
3 years ago
If sin(A+B)=1/2 &amp; sin(A-B)=1/3 find sin(2A)
timofeeve [1]

Answer:

sin(2A) = (2√2 + √3) / 6

Step-by-step explanation:

2A = (A+B) + (A−B)

sin(2A) = sin((A+B) + (A−B))

Angle sum formula:

sin(2A) = sin(A+B) cos(A−B) + sin(A−B) cos(A+B)

sin(2A) = 1/2 cos(A−B) + 1/3 cos(A+B)

Pythagorean identity:

sin(2A) = 1/2 √[1 − sin²(A−B)] + 1/3 √[1 − sin²(A+B)]

sin(2A) = 1/2 √(1 − 1/9) + 1/3 √(1 − 1/4)

sin(2A) = 1/2 √(8/9) + 1/3 √(3/4)

sin(2A) = 1/3 √2 + 1/6 √3

sin(2A) = (2√2 + √3) / 6

6 0
3 years ago
What are the quadrants of the standard (x,y) coordinate plane below that contain points on the graph of the equation 4x - 2y = 8
miv72 [106K]

Answer: I III and IV

Step-by-step explanation:

The line intersects the x axis at (2,0) and the y axis at (0,-4) so the line goes through quadrants 1 3 and 4 so the answer is the middle or the 3rd from top

7 0
2 years ago
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