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serious [3.7K]
3 years ago
5

7th grade math help me please :))

Mathematics
2 answers:
sattari [20]3 years ago
8 0

Answer:

-9n

Step-by-step explanation:

Hunter-Best [27]3 years ago
6 0

Answer:

-9n

Step-by-step explanation:

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Helpppppppppppppppppppppppppppppp
3241004551 [841]
Answer:

first option: Harulo is correct because the angle is coterminal with 3π / 4 and the reference angle is π / 4.

Explanation:

1) 19 π/4 = 4π + 3 π/4, which is 4 complete turns and 3/4 of turn.

2) 3 π/4 is in the third quadrant, so the reference angle is π - 3 π/4 = π/4

3) sin (π/4) = sin (3π/4) = (√2) / 2

4) csc (π/4) =  1 / [ sin (3π/4) ] = 1 / [ (√2) / 2 ] = 2 / (√2) = √2, which shows the validity of the statement and csc(19π/4) = √2.
3 0
4 years ago
10 + 9 • (−3) 2− (−1 + 8)
Vitek1552 [10]

Answer:

-51

Step-by-step explanation:

PEMDAS suggests you start with parenthesis

10+9•(-3)2-(7)

10-(27)2-(7)

10-54-7

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3 0
3 years ago
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Usimov [2.4K]

Answer:

13 minus 3x cubed

Step-by-step explanation:

6 0
3 years ago
What is the difference graphing sin(x)/cos(x) and sec(x)/csc(x)?
cupoosta [38]

Step-by-step explanation:

1. secx / cscx

2. sinx /cosx

7 0
2 years ago
(16 divided by 4) x (7-4)
zavuch27 [327]
4 x 3 = 12
12 would be the answer
4 0
3 years ago
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