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3 years ago

What is the value of x? If sin (8x - 18)º = cos (5x + 4)°

Mathematics

1 answer:

kobusy [5.1K]3 years ago

3 0

Answer:

Answer x = 8

Step-by-step explanation:

(5x + 4) + (8x - 18)= 90 The two angles must be complementary for this to work. Remove the brackets

5x + 4 + 8x - 18 = 90 Collect like terms

13x - 14 = 90 Add 14 to both sides

13x = 104 Divide by 13

x = 8 Answer

Check

Sin(8*8 - 18) = sin(64 - 18) = sin(46) = 0.7193

Cos(5*8 + 4) = cos(44) = 0.7193

This problem is very interesting. Thanks for posting.

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If ?2000 is placed into a bank account that pays 3% compound interest per year,how much will be in the account after 2 years?

Ipatiy [6.2K]

Answer:

There would be $2,120

Step-by-step explanation:

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3 years ago

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Students at a virtual school are allowed to sign up for one math class each year. The numbers of students signing up for various

Margaret [11]

A well formatted table of the distribution is attached below :

Answer:

0.124

0.733

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Step-by-step explanation:

Using the table Given :

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2 years ago

If 13 - 3z= 15z +4, z = ?

jasenka [17]

Answer:

z = 1/2 or 0.5

Step-by-step explanation:

13 - 3z = 15z + 4

+3z +3z

13 = 18z + 4

-4 -4

9 = 18z

z = 9/18

z = 1/2 or 0.5

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3 years ago

Simplify this expression 3x^2 y^2/24x

maksim [4K]

The answer would be (1/8) (xy ^ 2).
Equation:
3x ^ 2 y ^ 2 / 24x

=(3/24) (x ^ 2 y ^ 2 / x)
SO simplify it is
= (1/8) (xy ^ 2)

The simplified expression for this case is given by:
(1/8) (xy ^ 2)

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nydimaria [60]

1 and 127/495
You can check the picture for work.

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3 years ago