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Vera_Pavlovna [14]
3 years ago
6

If tan x=2021 x=20/21 and π< x < 3π/2 what is cos⁡(x+π/2)?

Mathematics
1 answer:
Flura [38]3 years ago
7 0

Answer:

42Sin

Step-by-step explanation:

Speed it up

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I need help ASAP) i need both answers (person who gets it right gets a brainlist and 5 stars)
Flauer [41]

Answer:

Part A: 24 meters

Part B: 33 meters²

Step-by-step explanation:

Part A: We know the length of 4 of the sides. The other two sides are 2 m & 1 m. Now add all of those values up. 3 + 7 + 5 + 6 + 2 + 1 = 10 + 11 + 3 = 21 + 3 = 24 meters. The perimeter of the polygon is 24 meters.

Part B: I'll split this into two rectangles: one is 3 by 7, and the other is 6 by 2. (3 * 7) + (6 * 2) = 21 + 12 = 33 meters². The area of the polygon is 33 meters².

8 0
2 years ago
Find the height of a cuboid whose volume is 540 cu.cm and base area is 90 sq.cm .
EastWind [94]

Answer:

540/90=6

and is 6 cm

height is 6 cm

6 0
2 years ago
there are 48 students in a school play. the ratio of boys to girls is 5:7. how many more girls than boys are in the school play?
Alex Ar [27]
We can use trial or error method here...

If we take 4 table, 4*5 = 20 and 4*7 = 28. 20+28 = 48.
20 : 28 = 5 : 7

So, there are 20 boys and 28 girls in a school play and there are 8 girls more than boys.

If you look over tables and try it out, only 4 table works for the given ratio.
3 0
3 years ago
If ∆GFE ~ ∆CBE, find the value of x
saw5 [17]
2/5 x 60 = 24
2/5 x (4x - 1) = x+5
8x - 2 = 5x + 25
3x = 27
x = 9
The value of x is 9
4 0
3 years ago
Read 2 more answers
A 3-ply core/sheath yarn consists of a 30/1 (core) yarn, and two 20/1 (sheath) yarns. Analysis of the plied yarn showed that 1 m
Alex

Answer:

0.000462

Step-by-step explanation:

From the given information:

The cotton count of the piled yarn is the ratio of the simple weight in (g) with the length by the simple length with weight.

Mathematically:

Cotton count = \dfrac{simple \ weight \ in (g) \times \ length }{simple \ length \times unit \ weight }

Cotton count = \dfrac{1 \times 0.001 }{0.108 \times 20}

\mathbf{ Cotton \  count = 0.000462}

4 0
3 years ago
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