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motikmotik
3 years ago
15

Help me now and I will be happy

Mathematics
2 answers:
Agata [3.3K]3 years ago
6 0
How can we help you
loris [4]3 years ago
5 0
How can I help you ???
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A sequence is defined by the formula f(n + 1) = f(n) – 3. If f(4) = 22, what is f(1)?
julsineya [31]

f(n) = f(n+1) +3

f(1) = f(2) +3

f(2) =f(3) +3

f(3) = f(4) +3

So f(1) = f(n) + 3* (n-1)

Put n=4 here so you found

f(1) = f(4) + 3* 3

= 22 +9

=31 ans




                             hope it helps

5 0
3 years ago
Read 2 more answers
Find a non zero vector in R4which is orthogonal
erastova [34]

Answer:

Please see attachment

Step-by-step explanation:

Please see attachment

5 0
3 years ago
1. What is the discriminant of the equation 5x2 - 20x + 20 = 0?
jok3333 [9.3K]

Answer:

0

Step-by-step explanation:

D = 20²-4(5)(20) = 400-400 = 0

6 0
3 years ago
Brian, a landscape architect, submitted a bid on each of three home landscaping projects. He estimates that the probabilities of
lesantik [10]

Answer:

a:  0.08, or 8% chance he wins all 3

b:  0.42, or 42% chance he wins 2

Step-by-step explanation:

P(win A) = 0.8

P(lose A) = 0.2

P(win B) = 0.5

P(lose B) = 0.5

P(win C) = 0.2

P(lose C) = 0.8

The situations are independent, so we multiply probabilities together.

To win all 3:  P(win A)*P(win B)*P(win C) = 0.8*0.5*.02 = 0.08

To win 2 of the 3 there are 3 ways to do this.  We add up the probabilities of the 3 situations...

P(win A)*P(win B)*(lose C) = 0.8*0.5*0.8 = 0.32

P(win A)*P(lose B)*P(win C) = 0.8*0.5*0.2 = 0.08

P(lose A)*P(win B)*P(win C) = 0.2*0.5*.02 = 0.02

0.32 + 0.08 + 0.02 = 0.42

5 0
3 years ago
A polynomial of the 5th degree with a leading coefficient of 7 and a constant term of 6???
Fiesta28 [93]

Answer:

The last option: 7x^5+2x^2+6\\

Step-by-step explanation:

Recall that the degree of a polynomial is the power of its leading term (the term with highest number of unknown factors).

In this case, the polynomials that show their leading term with degree "5", are the second and last options in the list of answers (notice power = 5 for the leading term in x , that is:  x^5

The only one of those that has a constant term (term with no "x" in it (last term in both cases) is the last option: 7x^5+2x^2+6

8 0
3 years ago
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