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stira [4]
3 years ago
6

PLEASE HELP ME WITH THIS

Mathematics
1 answer:
Harrizon [31]3 years ago
6 0

Answer:

The last option.

Step-by-step explanation:

Hope this helps!

Wait hold on

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Factorize ax^2 + bx by using identities
navik [9.2K]

Answer:

ax^2+bx=x(ax+b)

Please mark as brainliest

Step-by-step explanation:

4 0
2 years ago
A nutrition laboratory tested 25 "reduced sodium" hotdogs of a certain brand, finding that the mean sodium content is 310 mg wit
inessss [21]

Answer:

The  95% confidence interval is  295.9 < \mu< 324.1

A   95% level of confidence mean that there is 95%  chance  that the true population mean will be in this interval

Step-by-step explanation:

From the question we are told that

    The sample size is  n  =  25

    The mean is  \= x  =  310 \ mg

     The standard deviation is  \sigma =  36 \ mg

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} } =Z_{\frac{0.05 }{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{36 }{\sqrt{25} }

        E = 14.1

The 95% level of confidence interval  is mathematically represented as

      \= x - E < \mu

substituting values

     310- 14.1 < \mu< 310+ 14.1

     295.9 < \mu< 324.1

The  95% level of confidence mean that there is 95%  chance  that the true population mean will be in this interval

6 0
3 years ago
What is the inverse of the function f(x) = x +3?
KatRina [158]
Next time please add answer choices 

f(x) = y = x+3, Consider y=x+3. You just switch x and y:
 so y= x+3, becomes x=y+3. Once done, you isolate y:
x=y+3 or y = x-3. This this the inverse function of f(x)
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3 years ago
24 is what percent of 50?
maria [59]

Answer:

48%

Step-by-step explanation:

Use Is/Of

8 0
3 years ago
Read 2 more answers
Five year old Michelle weighs 75 decagrams. What is her weight in centigrams?
Svet_ta [14]
It should be 75000. I don’t know. I looked this up but I still hope this helps!
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3 years ago
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