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Mamont248 [21]
3 years ago
11

What are the zeros of the polynomial x2+4x-12

Mathematics
1 answer:
Mkey [24]3 years ago
3 0
Hi,
x^2+4x-12=0\\

\Rightarrow\ x^2+6x-2x-12=)0\\
\Rightarrow\ x(x+6)-2(x+6)=0\\
\Rightarrow\ (x+6)(x-2)=0\\

\boxed{\Rightarrow\ x=-6\ or\ x=2}\\


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A study of the career paths of hotel general managers sent questionnaires to an SRS of 280 hotels belonging to major U.S. hotel
const2013 [10]

Answer and Step-by-step explanation:

we have the following data:

Point estimate = sample mean = \ bar x = 12.39

Population standard deviation = \ sigma = 3.7

Sample size = n = 177

a) the margin of error with a 90% confidence interval

α = 1 - 90%

alpha = 1 - 0.90 = 0.10

alpha / 2 = 0.05

Z \ alpha / 2 = Z0.05 = 1,645

Margin of error = E = Z \ alpha / 2 * (\ sigma / \ sqrtn)

we replace:

E = 1.645 * (3.7 / \ sqrt177)

Outcome:

E = 0.46

b) margin of error with a 99% confidence interval

α = 1-99%

alpha = 1 - 0.99 = 0.01

alpha / 2 = 0.005

Z \ alpha / 2 = Z0.005 = 2,576

Margin of error = E = Z \ alpha / 2 * (\ sigma / \ sqrtn)

we replace:

E = 2,576 * (3.7 / \ sqrt177)

Outcome:

E = 0.72

c) A larger confidence interval value will increase the margin of error.

6 0
3 years ago
If 20% of X is $6, what is 38% of X?​
galben [10]
20% of x=6
20/100 of x=6
20x= 600
x=30
38% of 30=11.4
5 0
3 years ago
H=-16t^2+368
elixir [45]
The vertex and the t-intercept where t>0, will help solve this problem. Sending the work on the attachment.

5 0
3 years ago
Ricky is filling an 8 inch by 4 inch by 4 1/2 inch rectangular box with packing peanuts. The peanuts are cubes that come in two
RideAnS [48]
First find the volume of the box: 8•4•4.5=144 cubic inches.
8 of the 1/8 inch=1 of the 1 cubic inch
He could do 144 and 0
143 and 8
142 or 16
Or just keep following the pattern... Hope that helped
8 0
3 years ago
Which absolute value function has a graph that is wider than the parent function, f(x) = |x|, and is translated to the right 2 u
RoseWind [281]

Transformation involves changing the form of a function.

The absolute value function is f(x)=0.3|x -2|

The parent function of the absolute value function is:

f(x)=|x|

When the function is translated 2 units to the right, the new function is:

f(x)=|x -2|

From the function to be wider than the absolute function, the function must be stretched by a factor less than 1.

The possible function from the list of given options is f(x)=0.3|x -2|

Read more about function transformation at:

brainly.com/question/1548871

6 0
3 years ago
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