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yuradex [85]
3 years ago
9

True or false trigonometric ratios can be used with acute, right, and obtuse triangles.

Mathematics
1 answer:
Serhud [2]3 years ago
7 0

Answer:

False

Step-by-step explanation:

The ratios that can be used are some, cosine, tangent, etc.

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Verdich [7]
They like action not comedy
4 0
4 years ago
How many terms are in the arithmetic sequence 7, 1, −5, …, −161?
uranmaximum [27]

Answer:

29

Step-by-step explanation:

The n th term of an arithmetic sequence is

• a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

d = 1 - 7 = - 5 - 1 = - 6 and a₁ = 7, a_{n} = - 161, hence

7 - 6(n - 1) = - 161 ← solve for n

7 - 6n + 6 = - 161

13 - 6n = - 161 ( subtract 13 from both sides )

- 6n = - 174 ( divide both sides by - 6 )

n = 29

There are 29 terms in the sequence

5 0
3 years ago
Please solve ILL MARK YOU BRAINIEST!!!!!!!
sweet [91]

Answer:

14. 4 + x - 2

15. 8k - 3k

16. 5 + 2y + 15

Step-by-step explanation:

14. "sum" means adding, "minus" means subtract

sum of four and x: 4 + x

minus two: 4 + x - 2

15. "product" means multiplying, "decreased by" means subtract, "times" means multiply

the product of k and 8: 8k

three times k: 3k

the product of k and 8 decreased by three times k: 8k - 3k

(Depending on what the question is asking, you may or may not need to simplify this to 5k (8k - 3k = 5k))

16. "more" means add, "plus" means add, "twice" means multiply by two

five: 5

plus twice y:  5 + 2y

fifteen more: 5 + 2y + 15

3 0
3 years ago
4x^2-x-3=0 solve by completing the square x= ??
PIT_PIT [208]
Hello,

4x²-x-3=0
==>(2x)²-2*1/2*x+1/4-3-1/4=0
==>(2x-1/2)²-13/4=0
==>(4x-1)²-13=0
==>(4x-1-√13)(4x-1+√13)=0
==> x=(1+√13)/4 or x=(1-√13)/4



4 0
3 years ago
The total arams from Monday Tur
miv72 [106K]

Answer:

7 pounds

Step-by-step explanation:

3 0
3 years ago
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