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nekit [7.7K]
3 years ago
13

13. In the right triangle depicted below, what is the cosine of angle B?

Mathematics
1 answer:
Anastasy [175]3 years ago
8 0

Answer:

number c

Step-by-step explanation:

.............. just for filling 20 characters

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7n+2 = 4n+17 solve the equation
lions [1.4K]

Answer:

n = -5

Step-by-step explanation:

Solve for n:

n + 2 = 4 n + 17

Hint: | Move terms with n to the left hand side.

Subtract 4 n from both sides:

(n - 4 n) + 2 = (4 n - 4 n) + 17

Hint: | Combine like terms in n - 4 n.

n - 4 n = -3 n:

-3 n + 2 = (4 n - 4 n) + 17

Hint: | Look for the difference of two identical terms.

4 n - 4 n = 0:

2 - 3 n = 17

Hint: | Isolate terms with n to the left hand side.

Subtract 2 from both sides:

(2 - 2) - 3 n = 17 - 2

Hint: | Look for the difference of two identical terms.

2 - 2 = 0:

-3 n = 17 - 2

Hint: | Evaluate 17 - 2.

17 - 2 = 15:

-3 n = 15

Hint: | Divide both sides by a constant to simplify the equation.

Divide both sides of -3 n = 15 by -3:

(-3 n)/(-3) = 15/(-3)

Hint: | Any nonzero number divided by itself is one.

(-3)/(-3) = 1:

n = 15/(-3)

Hint: | Reduce 15/(-3) to lowest terms. Start by finding the GCD of 15 and -3.

The gcd of 15 and -3 is 3, so 15/(-3) = (3×5)/(3 (-1)) = 3/3×5/(-1) = 5/(-1):

n = 5/(-1)

Hint: | Simplify the sign of 5/(-1).

Multiply numerator and denominator of 5/(-1) by -1:

Answer: n = -5

5 0
3 years ago
HURRRY QUICK!!!!!!<br><br> HELP ME ON THIS!!!!!!!!!!!!!!!!!!!!
Vitek1552 [10]
It is exponential growth because it says 18.36% "more than" and it can be linear because it does not stay at a constant rate of change. Answer: Exponential growth
Hope this helps!
4 0
3 years ago
Ana tiene 14 años menos que Beto y ambas edades suman 56 años
allsm [11]
42 because 56 mines 14 equals 42
7 0
3 years ago
The film starts at 6.45 pm The film last 102 minutes what time dose the film finish
Brrunno [24]

Answer:

102 minutes=1 hour and 42 minutes

6:45+1 hour and 42 minutes=8:27 p.m.

hence, the answer is 8:27 pm

hope this helped.

8 0
2 years ago
What is the value of 2 ^ 3
Setler79 [48]

Answer:

8

Step-by-step explanation:

2^3 is the same as 2 x 2 x 2

2 x 2 is 4 and 4 x 2 is 8

so 2^3 is 8

3 0
3 years ago
Read 2 more answers
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