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Marina86 [1]
3 years ago
14

If the angles are represented in degrees, find both angles: sin(x + 7) = cos(4x + 8)

Mathematics
2 answers:
ValentinkaMS [17]3 years ago
7 0

Answer:

x = -1/3

Step-by-step explanation:

We have,

sin(x + 7) = cos(4x + 8)

We need to find the value of x.

We know that,

sin(90-x) = cosx

So,

sin(90-(x + 7)) = cos(4x + 8)

cos(x+7) = cos(4x + 8)

i.e.

(X+7) = (4x+8)

7-8 = 4x-x

-1 = 3x

x = -1/3

docker41 [41]3 years ago
6 0

Answer:

sin(22 ∘ ) = cos(68∘ )

Step-by-step explanation:

Sin(x+7)=cos(4x+8)

(x+7) + (4x+8) =   90

x + 7 + 4x + 8 =  90

5x + 15 =  90

    −15 =  −15

5x/5 = 75/5

x = 15

Answer: sin(22 ∘ ) = cos(68∘ )

 

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Two lawn care companies are competing for a landscaping contract. Company A charges a $300 consulting fee plus $7 per square foo
kkurt [141]

The square feet of landscaping will the two companies carry out that enables them to charge the same amount is 30

What is the total of the landscaping contract for each company?

The total cost of the  landscaping contract for each of the two companies is the sum of the fixed consulting fee plus the multiple of variable charge per square foot multiplied by the number of square feet of landscaping

Company A:

Total cost=300+7S

S=square foot

Company B:

Total cost=120+13S

At the point where the square foot are the same they charge the same amount

300+7S=120+13S

300-120=13S-7S

180=6S

S=180/6

S=30 square foot

Find out more about total cost on: brainly.com/question/15686427

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4 0
1 year ago
Which ordered pair is not a solution of f(x) = 2x + 9? (0, 9) (7, 23) (3, 14) (2, 13)
12345 [234]
(3,14) because when you plug in the x and y values you don’t end up with a true statement.
F(x)=2(3)+9
F(x)=6+9
F(x)=15
14 does not equal 15
4 0
3 years ago
Read 2 more answers
Please help!! ;w; Thank you in advance!!!
Dovator [93]

10  5/6  =   65/6

2  1/4    =  9/4

2 (9/4)  =   9/2

So   the  length  left   is

65/6  -  9/2    =

65/6  -  27/6   =

38 / 6    =

19 / 3    =

6 1/3   in

sorry this was a late response

5 0
3 years ago
How do you write 60% as a fraction in simplest form?
saveliy_v [14]
60/100
6/10
3/5

Hope this helps :)
6 0
4 years ago
Read 2 more answers
A man spent one-fourth of his salary on food and one-half of the remainder on clothing. If his salary is 120000, how much did he
agasfer [191]

Answer:

salary=120000

1/4×120000=30000= money spent

remainder=120000- 30000

= 90000

money spent on clothing =1/2×90000

=45000

6 0
2 years ago
Read 2 more answers
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