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LiRa [457]
4 years ago
5

If the sin 30=1/2 the cos 60=

Mathematics
1 answer:
PSYCHO15rus [73]4 years ago
8 0
Cos(60) = cos(90 - 30) = sin(30) = 1/2

This should be what you want.
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Find the simplest pattern and insert the missing term(s) of each sequence. 4, 7, 12, 21, 38, ___
Arte-miy333 [17]

Answer:

71

Step-by-step explanation:

4, 7, 12, 21, 38, ...

  • 2+2=2¹+2
  • 4+3= 2²+3
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  • 16+5= 2⁴+5
  • 32+6= 2⁵+6

next term:

  • 2⁶+7= 64+7=71

nth term:

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3 years ago
Write a congruence statement for<br> the two triangles shown below.
Semmy [17]

Answer:

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3 years ago
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In the given figure, C is the midpoint of AB and M is the midpoint of AC . Find the length of NB if MC = 4 and AN = 14.
Elina [12.6K]

Answer:

Given MC = 4

AN = 14

To Find, the length of NB

Step-by-step explanation:

AB is a line which has midpoint “C”. Now the line is divided into two equal portion AC and CB.

The AC has midpoint “M” and MC is 4, so AM will also be 4.

N is the midpoint of CB. So, CB = CN + NB

Now we know AC = AM + MC = 4  + 4 =8

Given, AN = 14

AN = AC + CN

14 = 8 + CN

CN = 6

Since N is the midpoint of CB then, CN = NB

Therefore, the NB is 6

8 0
4 years ago
Over 1,000 people try to climb Mt. Everest every year. Of those who try to climb Everest, 31 percent succeed. The probability th
Anit [1.1K]

Answer:

A- 0.125

B- Success of climbing mount Everest is independent of age.

Step-by-step explanation:

A.

Let x denote success in climbing Mount Everest

Let y denote the climber is at least 60 years old.

Therefore,

P(x) = 0.31

P(y) = 0.04

P( x ∩ y) = 0.005

Probability of success when the climber is at least 60 years old =

P( x ∩ y) ÷ P(y) = 0.005 ÷ 0.04 = 0.125.

B.

The success rate is independent of age as there are both success and failure rates across board on the scale of ages of climbers.

7 0
3 years ago
Choose the letter corresponding to the best answer. <br> Which is a true statement?
Harman [31]
B is the correct answer because -10 is a greater debt than -2 would be in terms of money!
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3 years ago
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