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Monica [59]
4 years ago
13

Compute the following linear combinations. 4(-2,3)-2(6,-7) ...?

Mathematics
2 answers:
Anika [276]4 years ago
8 0
4(-2 , 3) - 2(6 , -7)
(-8  , 12) + (-12 , 14)
Combining the x and y terms:
= (-20 , 26)
lora16 [44]4 years ago
3 0

Answer:

Step-by-step explanation:

alright lets get started.

the linear combination is given by :

4(-2,3)-2(6,-7)

foiling 4 and 2 into the parenthesis

(4*-2, 4*3)+(-2*6,-2*-7)

(-8, 12)+(-12,14)

Combinig x and y terms together

(-8-12, 12+14)

(-20,26)    :     answer

Hope it will help. :)

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6 0
4 years ago
Private colleges and universities rely on money contributed by individuals and corporations for their operating expenses. Much o
emmainna [20.7K]

Answer:

The 95% confidence interval   81.852  <  \mu <  280.098

Step-by-step explanation:

From the question we are told that

   The  sample mean is  \= x  =  180.975

   The standard deviation is  \sigma  =  143.042

   The sample size is n = 8

Given that the confidence level is  95%  then the level of significance is  

    \alpha =( 100- 95) \%

=>  \alpha =0.05    

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.96

Generally the margin of error is mathematically represented as  

      E = Z_{\frac{\alpha }{2} } *  \frac{\sigma }{\sqrt{n} }

=>  E = 1.96 *  \frac{ 143.042 }{\sqrt{8} }

=>  E = 99.123

Generally 95% confidence interval is mathematically represented as  

      \= x -E <  \mu <  \=x  +E

=>    180.975 -99.123 <  p <  180.975 +99.123

=>    81.852  <  \mu <  280.098

   

5 0
3 years ago
PLEASE HELP ILL MARK BRAINEST!!!!
earnstyle [38]

Answer:

(-3,8) would NOT fit the table.

6 0
3 years ago
Read 2 more answers
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