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kozerog [31]
3 years ago
10

The diagonals of a kite __________.

Mathematics
1 answer:
Colt1911 [192]3 years ago
6 0
Are perpendicular to each other
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Calculate angles in a triangle<br> HELP
ki77a [65]

<u>Answer:</u>

angle a = \boxed{154}^{\circ}

<u>Step-by-step explanation:</u>

The angles in a triangle add up to 180°.

∴ ∠a + 13° + 13° = 180°

⇒ ∠a + 26° = 180°

⇒ ∠a = 180° - 26°

⇒ ∠a = 154°

6 0
2 years ago
Solve 2cos(x)-4sin(x)=3 [0,360]
Korvikt [17]
2cos(x) - 4sin(x) = 3

use identity  [cos(x)]^2 +[ sin(x)]^2 = 1 => cos(x) = √[1 - (sin(x))^2]

2√[1 - (sin(x))^2] - 4 sin(x) = 3

2√[1 - (sin(x))^2] = 3 + 4 sin(x)

square both sides

4[1 - (sin(x))^2] = 9 + 24 sin(x) + 16 (sin(x))^2

expand, reagrup and add like terms

4 - 4[sin(x)]^2 = 9 + 24sin(x) + 16sin^2(x)

20[sin(x)]^2 + 24sin(x) +5 = 0

use quadratic formula and you get sin(x) = -0.93166 and sin(x) = -0.26834

Now use the inverse functions to find x:

arcsin(-0.93166) = 76.33 degrees

arcsin(-0.26834) = 17.30 degrees






3 0
3 years ago
HELP MEEEEEE<br> show all your works!
Gekata [30.6K]

Answer:

14%

Step-by-step explanation:

A change from 50 to 57 represents a positive change (increase) of 14%

Percent change =\frac{New-old}{old}× 100%

\frac{57-50}{50}× 100% = 14

8 0
2 years ago
Read 2 more answers
A box contains 3 plain pencils and 9 pens. a second box contains 7 color pencils and 3 crayons. one item from each box is chosen
SpyIntel [72]
Out of the first box the possibility would be 3:12 or 3 out of 12. The second box would be 7:10 or 7 out of 10
3 0
3 years ago
Read 2 more answers
42 = -7 ( Z - 3 )<br> Z =?
ipn [44]

Answer:

-3

Step-by-step explanation:

6 0
3 years ago
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