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Montano1993 [528]
3 years ago
8

What number needs to be added to both sides of the equation in order to complete the square?

Mathematics
2 answers:
IRISSAK [1]3 years ago
8 0

Answer:

49

Step-by-step explanation:

The formula for the whole square is

\left ( a+b \right )^2=a^{2}+2ab+b^{2}

So, to make the complete square, in the expression

x^{2}+14x = - 32

First take half of the term 14 x that is 7x and then divide it by x so it is 7. Now take its square that is 49. So add 49 on both the sides to make the given expression as a whole square.

Sever21 [200]3 years ago
5 0

x^2+14x = (x+7)^2

7^2 = 49

so you would add 49 to both sides

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You bought a shirt with the price of $135.50, and the sale tax rate is 8.25% whats the sales tax
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Answer:

11.18

Step-by-step explanation:

135.50 x .0825=11.18

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3 years ago
1. In order to get more female customers, a new clothing store offers free gourmet coffee and pastry to its customers. The avera
ioda

Answer:

No, the manager is not correct based on the 95% confidence interval.

Step-by-step explanation:

We are given that the average daily revenue over the past five-week period has been $1,080 with a standard deviation of $260, i.e.; X bar = $1080 and s = $260 and sample size, n = 35 .

The Pivotal quantity for 95% confidence interval is given by;

                \frac{Xbar - \mu}{\frac{s}{\sqrt{n} } } ~ t_n_-_1

where, X bar = sample mean = $1080

                s  = sample standard deviation = $260

                 n = sample size = 35 {five-week}

So, 95% confidence interval for average daily revenue, \mu is given by;

P(-2.032 < t_3_4 < 2.032) = 0.95

P(-2.032 < \frac{Xbar - \mu}{\frac{s}{\sqrt{n} } } < 2.032) = 0.95

P(-2.032 * {\frac{s}{\sqrt{n} } < {Xbar - \mu} < 2.032 * {\frac{s}{\sqrt{n} } ) = 0.95

P(X bar - 2.032 * {\frac{s}{\sqrt{n} } < \mu < X bar + 2.032 * {\frac{s}{\sqrt{n} } ) = 0.95

95% confidence interval for \mu = [ X bar - 2.032 * {\frac{s}{\sqrt{n} } , X bar + 2.032 * {\frac{s}{\sqrt{n} } ]

                                            = [ 1080 - 2.032 * {\frac{260}{\sqrt{35} } , 1080 + 2.032 * {\frac{260}{\sqrt{35} } ]

                                             = [ 990.70 , 1169.30 ]

<em>No, the manager is not correct based on the fact that the coffee and pastry strategy would lead to an average daily revenue of $1,200 because the calculate 95% confidence interval does not include value of $1200.</em>

Therefore, the store manager believe is not correct.

8 0
3 years ago
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Answer:

If you multiple 1050 by 20 you will get 21,000.

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The medimum has a diameter of 10π and the large has diameter of 12π. The difference is 2π or 6.28 inches. The third one.:D

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