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Gre4nikov [31]
4 years ago
7

Find All Roots Of The Equation;

Mathematics
1 answer:
Pie4 years ago
6 0

Answer:

Step-by-step explanation:

you would solve by grouping the first two terms together and the last two terms together. (x^3+x^2)(+(4x+4)=0. you would factor each one and get x^2(x+1)+ 4(x+1)=0. the final outcome is (x^2+4)(x+1)=0. this is how you find the roots of this equation


sorry if this answer is wrong

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Use the tables to help you compare the two ratios.
Serga [27]

Answer:

whats the question here im confused

Step-by-step explanation:

3 0
3 years ago
Janice builds a model using a scale of 2 cm to represent 3 m.
ExtremeBDS [4]
Since the scale of 2 cm to 3m is the scale that Janice is using, yes the ratio would be 2:3 so William is correct
5 0
3 years ago
The area of a table is 8ft^2 and the length is 4ft. The width of the table top is?
Natalka [10]
The formula for area is A = L*W or we can say A=LW. Lets plugin what we know.

A = LW
8 = 4W
Now solve for W
8 = LW
8=LW
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6 0
4 years ago
18=x+5x im confused on this problem
DaniilM [7]
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3 0
4 years ago
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US consumers are increasingly using debit cards as a substitute for cash and checks. From a sample of 100 consumers, the average
scoray [572]

Answer:

A. Margin of error = 128.79

B. The 99% confidence interval for the population mean is (7661.21, 7918.79).

Step-by-step explanation:

We have to calculate a 99% confidence interval for the mean.

The population standard deviation is know and is σ=500.

The sample mean is M=7790.

The sample size is N=100.

As σ is known, the standard error of the mean (σM) is calculated as:

\sigma_M=\dfrac{\sigma}{\sqrt{N}}=\dfrac{500}{\sqrt{100}}=\dfrac{500}{10}=50

The z-value for a 99% confidence interval is z=2.576.

The margin of error (MOE) can be calculated as:

MOE=z\cdot \sigma_M=2.576 \cdot 50=128.79

Then, the lower and upper bounds of the confidence interval are:

LL=M-t \cdot s_M = 7790-128.79=7661.21\\\\UL=M+t \cdot s_M = 7790+128.79=7918.79

The 99% confidence interval for the population mean is (7661.21, 7918.79).

8 0
3 years ago
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