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DedPeter [7]
3 years ago
9

Can someone answer this pls

Mathematics
1 answer:
sineoko [7]3 years ago
3 0

Answer:

(1,2,3)

Step-by-step explanation:

plugg in

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In the triangle above, the cosine of a is 0.8.What is sine of b?
Natalka [10]

Answer:

sin b = 0.8

Step-by-step explanation:

Since a and b are complementary angles , then

sin b = cos a = 0.8

5 0
3 years ago
If 6x+7°and 8x-17°are vertical angles, whats x
kolezko [41]
Since the two measures are vertical angles, you want to set them equal to each other :

6x+7=8x-17
-6x -6x
——————
7=2x-17
+17 +17
———————
24= 2x
X= 12
———

The answer is 12.
4 0
3 years ago
4.5+n is it rational or irrational
nirvana33 [79]

Answer:

4.5 is a rational number, as it can be represented as 9/2. Many important numbers in mathematics, however, are irrational, and cannot be written as ratios.

5 0
3 years ago
A long time ago Dulani found an island shaped like a triangle with three straight shores of length 3 km 4 km and 5 km.He said no
VikaD [51]
To find the area of his exclusion zone you would need to understand that a triangle with dimensions of 3, 4, and 5 represent a right triangle.

This means the exclusion zone would be applied to the base and the height of the triangular space.

You would add 2 km to the 3 km, and 2 km to the 4 km to create a new height of 5 km and a new base of 6 km.

Please see the attached picture to understand this.

You will find the area of the total space created by the new triangle and subtract the space represented by the original triangle to find the area of the exclusion zone.

(1/2 x 6 x 5) - (1/2 x 4 x 3)
15 km² -6 km² equals 9 km².

The exclusion space is 9 km².

5 0
3 years ago
What is 4x less than or equal to 12
mihalych1998 [28]
3 x 4 is equal to 12 I think that’s your answer
8 0
3 years ago
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