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Slav-nsk [51]
3 years ago
5

Tell whether xy is positive or negative. If x is negative and y is positive, the product is

Mathematics
1 answer:
mamaluj [8]3 years ago
6 0
Negative. A negative number times a positive number is equal to a negative number. X multiplied by Y is a positive.
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Solve 9/10=z/8 . Round to the nearest tenth.
kompoz [17]
\boxed {Question}
\frac{9}{10} =  \frac{z}{8}

\boxed {Cross \  multiply}
10z = 8 \times 9

\boxed {Evaluate}
10z = 72
z = 72 \div 10
z = 7.2

\Longrightarrow \bf \ Answer \ : \ z = 7.2

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How many solutions does the system of equations have?
sertanlavr [38]
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Find all solutions in the interval [0, 2π). tan x + sec x = 1
svp [43]
Use the identity 
sec^2x = 1 + tan^2 x
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tan x + sqrt( 1 + tan^2 x) = 1
sqrt ( 1 + tan^2 x) = 1 - tan x
1 + tan^2 x  = 1 + tan^2x - 2 tan x
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tan x = 0 

x =  0, π 
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6 0
3 years ago
NEED HELP ASAP WILL GIVE BRAINLIEST THANK YOU
olga2289 [7]

Answer:

11:00 am< 6

84>6

Step-by-step explanation:

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Katena32 [7]
If I understand it correctly then its complementary angle will be 115˚, because 180-65=115.
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2 years ago
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