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Aliun [14]
3 years ago
10

Here are the first five terms of an arithmetic sequence. 2 6 10 14 18 Is 86 a term in the sequence? You must give a reason for y

our answer. ANSWEER NOOOWWW PLSSS
Mathematics
2 answers:
AnnyKZ [126]3 years ago
5 0

Answer:

86 is a term in the sequence

Step-by-step explanation:

2; 6; 10; 14; 18;.....

T1=1*4-2=2

T2=2*4-2=6

T3=3*4-2=10

T4=4*4-2=14

T5=5*4-2=18

......................

Tn=n*4-2

n*4-2=86

n*4=88

n=88/4

n=22

86 is T22  in  the sequence.

bazaltina [42]3 years ago
5 0
Yes, 86 is a term in the sequence because the sequence is adding by 4. If your add 4 you will eventually get to 86
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4 = 1 - n + 4? Geometry btw
eimsori [14]

Answer:

N = -7

Step-by-step explanation:

4 = 1 - n -4

Subtract the numbers first

1 - 4 = -3

Then rearrange the terms

4 = -3 - n

-----> 4 = n - -3

The you add 3 to both sides of the equations

4 + 3 = -n - 3 + 3

3 0
2 years ago
A new medical test provides a false positive result for hepatitis 2% of the time that is a perfectly healthy subject being teste
Oxana [17]
Given that X <span>be the number of subjects who test positive for the disease out of the 30 healthy subjects used for the test.

The probability of success, i.e. the probability that a healthy subject tests positive is given as 2% = 0.02


Part A:

</span><span>The probability that all 30 subjects will appropriately test as not being infected, that is the probability that none of the healthy subjects will test positive is given by:

</span>P(X)={ ^nC_xp^x(1-p)^{n-x}} \\  \\ P(0)={ ^{30}C_0(0.02)^0(1-0.02)^{30-0}} \\  \\ =1(1)(0.98)^{30}=0.5455
<span>

Part B:

The mean of a binomial distribution is given by

</span>\mu=np \\  \\ =30(0.02) \\  \\ =0.6
<span>
The standard deviation is given by:

</span>\sigma=\sqrt{np(1-p)} \\ \\ =\sqrt{30(0.02)(1-0.02)} \\ \\ =\sqrt{30(0.02)(0.98)}=\sqrt{0.588} \\  \\ =0.7668
<span>

Part C:

This test will not be a trusted test in the field of medicine as it has a standard deviation higher than the mean. The testing method will not be consistent in determining the infection of hepatitis.</span>
5 0
3 years ago
Convert 5.100 × 10-3 to ordinary notation.<br> a.0.0005100<br> b.0.005100<br> c.510.0<br> d.5100
kondor19780726 [428]
5.100 x 10⁻³ = 5.100 x 0.001
                    = 0.005100      (shift the decimal point for 5 by 3 units left)

Alternatively, because 10⁻³ = 1/1000, therefore
5.100 x 10⁻³ = 5.1/1000

           0.0051
         ---------------
1000 | 5.100
           5000
           -------------
              1000
              1000
            
This yields the same result.

Answer: b. 0.005100
4 0
3 years ago
(5x-1) -(2-8x) for x = 0.75
Eva8 [605]
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4 0
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Which statements about the graph of the function f(x) = -2- 4x + 2 are true? Select three options
soldi70 [24.7K]

Answer:Its B,C, and E man

Step-by-step explanation:

5 0
3 years ago
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