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NARA [144]
2 years ago
8

Okay this app getting addicting

Mathematics
2 answers:
kompoz [17]2 years ago
8 0

FAXT

like i started today but i can't stoppppp

o-na [289]2 years ago
6 0

Bruh frrrrr I need to stop spending all my time on here

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Type the expression that results from the following series of steps:
Sergio039 [100]

Answer:

n+5×4-7

Step-by-step explanation:

6 0
2 years ago
Noah measured the length of three pieces of cloth. The measurements were 4.29 feet, 3.6 feet, and 2.34 feet. what was the total
iragen [17]
10.23 feet is the answer because when you line up the decimals and add, its 10.23
4 0
3 years ago
Helppppppppppppppppppppppppp
geniusboy [140]

Answer:

C

Step-by-step explanation:

11 times 11 = 121

11 times 12 equals 132

11 times 13 = 143

7 0
3 years ago
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I'm in need of help please​
matrenka [14]
15. X= — 11/12
16. X= — 14/15
7 0
2 years ago
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Which of the following is not equal to sin⁡(-230°)?
xenn [34]

From trigonometry we know that:

if sin(\theta)=sin(\alpha)

then, \theta=n\pi+(-1)^n\alpha (where n is an integer)

This can be rewritten in degrees as:

\theta=n(180^{\circ})+(-1)^n\alpha.............(Equation 1)

Now, in our case, \alpha=-230^{\circ}

Therefore, (Equation 1) can be written as:

\theta=n(180^{\circ})+(-1)^n(-230^{\circ})..........(Equation 2)

Now, to find the correct options all that we have to do is replace n by relevant integers and find the values of \theta that match.

For n=2, (Equation 2) gives us: \theta=2\times 180^{\circ}+(-1)^2(-230^{\circ})=360^{\circ}-230^{\circ}=130^{\circ}.

Thus, sin(230^{\circ})=sin(130^{\circ})

Now, we know that: -sin(-50^{\circ})=sin(50^{\circ})

Let n=-1, then:

\theta=(-1)\times 180^{\circ}+(-1)^{-1}(-230^{\circ})=-180^{\circ}+230^{\circ}=50^{\circ}

Thus, sin(-230^{\circ})=-sin(-50^{\circ})

Likewise, sin(-230^{\circ})=sin(50^{\circ})

Only the last option sin(-50^{\circ}) will never match sin(-230^{\circ}) because no integral value of n will ever give \theta=-50^{\circ}

Thus the last option is the correct option.

3 0
3 years ago
Read 2 more answers
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