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igor_vitrenko [27]
3 years ago
13

#14 i

Mathematics
1 answer:
ivann1987 [24]3 years ago
7 0

Answer:

Incorrect/No

Step-by-step explanation:

7x2=14

-7x2=-14

<u>Follow the below guidelines:</u>

  • A positive number times a positive number is a positive number
  • A negative number times a positive number is a negative number
  • A positive number times a negative number is a negative number
  • A negative number times a negative number is a positive number

Looking at the last one, we see that -2x-7=14, a positive number

Hope this helps!

--Applepi101

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Suppose a researcher is interested in understanding the variation in the price of store brand milk. A random sample of 36 grocer
liberstina [14]

Answer: ($3.055, $3.205)

Step-by-step explanation:

Given : Significance level : \alpha: 1-0.95=0.5

Critical value : z_{\alpha/2}=1.96

Sample size : n= 36

Sample mean : \overline{x}=\$\ 3.13

Standard deviation : \sigma= \$\ 0.23

The confidence interval for population mean is given by :_

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

\text{i.e. }\$\ 3.13\pm (1.96)\dfrac{0.23}{\sqrt{36}}\\\\\approx\$\ 3.13\pm0.075\\\\=(\$\ 3.13-0.075,\$\ 3.13+0.075)=(\$\ 3.055,\$\ 3.205)

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3 0
3 years ago
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kozerog [31]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
Evaluate the expression when x=1/3 and y=-7/4<br><br>3x+y​
dolphi86 [110]
Answer) -3/4 or decimal form -0.75
4 0
3 years ago
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Which points are separated by a distance of 4 units? a. (7,7) (1,7) b. (3,3) (1,3) c. (4,2) (8,2) d. (2,4) (5,4)
elena55 [62]

Answer:

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The polynomial is not factorable, so we use the quadratic formula.


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x = \dfrac{-5 \pm \sqrt{25 + 8}}{2}


x = \dfrac{-5 \pm \sqrt{33}}{2}


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5 0
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