What is 2x2+2i know the answer but you answer it A. 1B. 3C.2D.6

Mathematics

2 answers:

dmitriy555 [2]3 years ago

7 0

The answer is D, 6 :)

marishachu [46]3 years ago

5 0

D thats becuase if you do 2x2 it equals 4 and if you add 4 + 2= that'll be 6.

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2x² - 5x+1 has roots alpha and beta. Find alpha⁴+beta⁴ without solving the equation.

shepuryov [24]

Answer:

Step-by-step explanation:

$\alpha+\beta=\dfrac{5}{2} \\\\\alpha*\beta=\dfrac{1}{2} \\\\\alpha^2+\beta^2=\dfrac{21}{4} \ (see\ previous\ post)\\\\(\alpha+\beta)^4=\dfrac{625}{16} \\\\=\alpha^4+\beta^4+4*\alpha^3*\beta+6*\alpha^2*\beta^2+4*\alpha*\beta^3\\\\=\alpha^4+\beta^4+4*(\alpha*\beta)(\alpha^2+\beta^2)+6*\alpha^2*\beta^2\\\\\alpha^4+\beta^4=(\alpha+\beta)^4-4*(\alpha*\beta)(\alpha^2+\beta^2)-6*\alpha^2*\beta^2\\\\= \dfrac{625}{16} -4*\dfrac{1}{2} *\dfrac{21}{4} -6*(\dfrac{1}{2})^2 \\\\$

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7 0

3 years ago

Charlie cannot remember how much he financed to buy his car. He does remember that his monthly payment is $200. His add-on inter

Mazyrski [523]

First find the total payments
Total paid
200×30=6,000 (this is the future value)

Second use the formula of the future value of annuity ordinary to find the monthly payment.
The formula is
Fv=pmt [(1+r/k)^(n)-1)÷(r/k)]
We need to solve for pmt
PMT=Fv÷[(1+r/k)^(n)-1)÷(r/k)]
PMT monthly payment?
Fv future value 6000
R interest rate 0.09
K compounded monthly 12
N=kt=12×(30months/12months)=30
PMT=6000÷(((1+0.09÷12)^(30)
−1)÷(0.09÷12))
=179.09 (this is the monthly payment)

Now use the formula of the present value of annuity ordinary to find the amount of his loan.
The formula is
Pv=pmt [(1-(1+r/k)^(-n))÷(r/k)]
Pv present value or the amount of his loan?
PMT monthly payment 179.09
R interest rate 0.09
N 30
K compounded monthly 12
Pv=179.09×((1−(1+0.09÷12)^(
−30))÷(0.09÷12))
=4,795.15

The answer is 4795.15

5 0

3 years ago

Please explain.

DENIUS [597]

If you want to solve this i suggest rather dividing or multiplying.

4 0

4 years ago

There are 360 people in a movie theater. Of these people, 35% bought student tickets, and 45% bought adult tickets. The rest bou

mafiozo [28]

Answer:

20%

Step-by-step explanation:

35+45 = 80

100-80=20

6 0

3 years ago

Read 2 more answers

Help it’s for algebra 1

Masja [62]

F(2) = -5(2) + 7
f(2) = -10 + 7
f(2) = -3

4 0

4 years ago

What is 2x2+2i know the answer but you answer it A. 1B. 3C.2D.6​

What is 2x2+2i know the answer but you answer it A. 1B. 3C.2D.6