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andrew-mc [135]
3 years ago
6

Solve the equation for the given variable a/2 + 4 = 6

Mathematics
1 answer:
Ber [7]3 years ago
4 0

Answer:

the answer is a=4

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PLEASE ANSWERRR!!!!!!
Fantom [35]

Answer:

C

Step-by-step explanation:

A function cannot have multiple y values for one x value.

Option A lists the y values of -8 and 10 for the x value of -4. Therefore this is not a function.

Option B lists 0, 5, 10, AND 15 all for -1. This can't be a function either.

Option C does not have two of the same x values for different results. Although both 0 and 9 give you the answer of 1 for the y value, this is perfectly okay in a function. This is your answer.

8 0
3 years ago
We wish to give a 90% confidence interval for the mean value of a normally distributed random variable. We obtain a simple rando
coldgirl [10]

Answer: (9.27025,\ 11.12975)

Step-by-step explanation:

Given : Sample size : n= 9

Degree of freedom = df =n-1 =8

Sample mean : \overline{x}=10.2

sample standard deviation : s= 1.5

Significance level ; \alpha= 1-0.90=0.10

Since population standard deviation is not given , so we use t- test.

Using t-distribution table , we have

Critical value = t_{\alpha/2, df}=t_{0.05 , 8}=1.8595

Confidence interval for the population mean :

\overline{x}\pm t_{\alpha/2, df}\dfrac{s}{\sqrt{n}}

90% confidence interval for the mean value will be :

10.2\pm (1.8595)\dfrac{1.5}{\sqrt{9}}

10.2\pm (1.8595)\dfrac{1.5}{3}

10.2\pm (1.8595)(0.5)

10.2\pm (0.92975)

(10.2-0.92975,\ 10.2+0.92975)

(9.27025,\ 11.12975)

Hence, the 90% confidence interval for the mean value= (9.27025,\ 11.12975)

6 0
3 years ago
Convert 120 km/h to feet per second with an explanation.
balu736 [363]
1m =3.28 feet    1km= 1000m    1km=3 280 feet

120x3 280=393 600feet/h          1h=3 600sec

393 600/3 600=109.33feet/sec

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3 years ago
Which answer choice best describes the meaning of the expression?
pshichka [43]
J is the correct awnser.
8 0
3 years ago
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Mr. and Mrs. Smith's children all play different sports. They want to buy a combination training sets, which each cost $149, vol
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How many kids does he have
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3 years ago
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