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dybincka [34]
3 years ago
5

To multiply polynomials, I do what?

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

Answer:

multiply each term in one polynomial by each term in the other polynomial

add those answers together, and simplify if needed.

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Find the unit vector that has the same direction as the vector v. v = 3i + j
Alchen [17]
\bf \textit{unit vector for \underline{v}}\qquad v=\ \textless \ a,b\ \textgreater \ \implies \stackrel{unit~vector}{\cfrac{a}{\sqrt{a^2+b^2}}~,~\cfrac{b}{\sqrt{a^2+b^2}}}\\\\
-------------------------------\\\\
v=3i+j\implies v=\ \textless \ 3,1\ \textgreater \ \implies \stackrel{unit~vector}{\cfrac{3}{\sqrt{3^2+1^2}}~,~\cfrac{1}{\sqrt{3^2+1^2}}}
\\\\\\
\left( \cfrac{3}{\sqrt{10}}~,~\cfrac{1}{\sqrt{10}} \right)
5 0
3 years ago
Read 2 more answers
The sum of two numbers is 179.<br> Their difference is 133. Find both numbers.
Marianna [84]

Answer:

156,23

Step-by-step explanation:

let the numbers be x and y and x>y

x+y=179

x-y=133

add

2x=312

x=156

156+y=179

y=179-156=23

8 0
3 years ago
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Solve each equation. Type only the number solution, without x =
ra1l [238]
1. X = 14
2. X = 120
3. X = 9.24
4. X = 16
5. X = 193.6
6. X = 11
7. X = 7.8
8. X = 446.4
9. X = 26.25
10. X = 6.6
11. X = 9
12. X = 2.01
4 0
3 years ago
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Which of the following would produce a standard error of 2 points? n = 5 scores from a population with σ = 20 n = 5 scores from
baherus [9]

Answer:

n = 100 scores from a population with σ = 20

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation, which is also called standard error, of s = \frac{\sigma}{\sqrt{n}}

n = 5 scores from a population with σ = 20

s = \frac{20}{\sqrt{5}} = 8.94

n = 5 scores from a population with σ = 80

s = \frac{80}{\sqrt{5}} = 35.78

n = 100 scores from a population with σ = 20

s = \frac{20}{\sqrt{100}} = 2.

This one is the correct answer.

n = 100 scores from a population with σ = 40

s = \frac{40}{\sqrt{100}} = 4.

3 0
3 years ago
when you convert 100 feet per second to inches per second will there be more or less then 100 inches expain
Vesna [10]
When you convert feet to inches, every one foot becomes 12 . 

You're taking a batch of something out of the original big packages,
and putting the whole thing into new small packages, so of course
you wind up with more packages.
4 0
3 years ago
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