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Nezavi [6.7K]
2 years ago
8

2sin60°. cos60° = cos30°​

Mathematics
2 answers:
Zanzabum2 years ago
7 0

Answer:

3/2

Step-by-step explanation:

Zinaida [17]2 years ago
5 0
U need help use app childe it’s name is guthmath it’s red use code name this P9EJ5H it will help free
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The first five terms of a sequence are 2, 5/3, 3/2, 7/5 and 4/3. what is the explicit formula?
katen-ka-za [31]

Answer:

  an = (n+3)/(n+1)

Step-by-step explanation:

The sequence can be written as ...

  4/2, 5/3, 6/4, 7/5, 8/6, ...

where the first numerator is n+3 and the first denominator is n+1. Each numerator and denominator increase by 1 from term to term, so the explicit formula can be written

  an = (n+3)/(n+1)

4 0
3 years ago
Ken is thinking of a number. nine more than the product of 4 and the number is 73. Find Kens number.
rewona [7]
I got 16 for this one
5 0
3 years ago
Read 2 more answers
Factor completely 2x^3y^4-8x^2y^3+6xy^2
Maru [420]

Answer:

2 x y^2 (x y - 1) (x y - 3)

Step-by-step explanation:

2x^3y^4-8x^2y^3+6xy^2

each term contains 2xy^2 so factor that out

2xy^2(x^2y^2 -4xy+3)

then lets factor the inside

what terms multiply together to give us +3 and add to -4

-3* -1 = 3     -3+-1 =-4

2 x y^2 (x y - 1) (x y - 3)

6 0
3 years ago
Drag numbers to the table so it shows a proportional relationship between x and y.
damaskus [11]

Answer:

0.5 = 3

1.5 = 9

4.5 = 27

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
In December 2004, a report based on the National Survey on Drug Use and Health estimated that 20% of all Americans aged 16 to 20
o-na [289]

Answer:

542

Step-by-step explanation:

We are required to find the sample size at 98% confidence interval in this question

E = 0.04

P* = 20% = 0.20

n = p* x (1-p)(Zα/2÷E)²

α = 1 - 0.98

= 0.02

To get Critical value

= 0.02/2 = 0.01

The critical value at 0.01 is 2.33

Inserting values into formula:

O.2 x 0.8(2.33/0.04)²

= 0.8 x 0.2 x 58.25²

= 542.89

The value of n must be an integer therefore the answer is 542.

4 0
2 years ago
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