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KATRIN_1 [288]
3 years ago
14

What is the y-intercept of the line described by the equation below? Y= 4x-9

Mathematics
2 answers:
Lapatulllka [165]3 years ago
6 0

This equation is put in slope-intercept form.  That means it is in Y = mx+b.

m stands for the slope, and b stands for the y-intercept.  So, in this case -9 is the B value, so -9 is the y-intercept.


Ordered Pair: (0,-9)

Anvisha [2.4K]3 years ago
5 0

Answer:

(0,-9)

Step-by-step explanation:

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Y = 180 - 51 -56 = 73

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Caroline measured the weight of a dog that came into the veterinary clinic. She determined that her measurement had a margin of
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Weight of the dog in kgs-0.05 kgs

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Leah drives her truck 270KM in the same time Deborah drives her car 250KM. If Leah drives 4km/h faster than Deborah. What is eac
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Deborah: 50 km/h

Step-by-step explanation:

250+4x=270

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What is the value of x in the equation 8x – 2y = 48, when y = 4?<br><br> 6<br> 7<br> 14<br> 48
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Step-by-step explanation:

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The average daily volume of a computer stock in 2011 was ų=35.1 million shares, according to a reliable source. A stock analyst
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Answer:

a

   The  null hypothesis is  H_o :  \mu =  35 .1 \ million  \ shares

    The  alternative hypothesis  H_a  :  \mu  \ne  35.1\ million  \ shares

b

 The   95% confidence interval is  27.475   <  \mu < 37.925

Step-by-step explanation:

From the question the we are told that

      The  population mean is  \mu  = 35.1 \  million \ shares

      The  sample size is  n = 30

       The  sample mean is  \= x  =  32.7 \ million\    shares

       The standard deviation is  \sigma =  14.6 \ million\  shares

     

Given that the confidence level is  95\% then the level of significance is mathematically represented as

                  \alpha  = 100-95

                  \alpha  = 5\%

=>               \alpha  = 0.05

Next we obtain the critical value of \frac{\alpha }{2} from the normal distribution table

    The value 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} }

substituting values

                E  =  1.96 *  \frac{ 14.6 }{\sqrt{30} }

                E  =  5.225

The 95% confidence interval confidence interval is mathematically represented as

              \= x  -E  <  \mu <  \= x  +E

substituting values

               32.7 - 5.225   <  \mu < 32.7 + 5.225

                27.475   <  \mu < 37.925

       

6 0
2 years ago
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