A polynomial has one root that equals 5-7i. Name one other root of this polynomial

Answers

Answer 1

Answer:

Answer:

The other root of the polynomial is 5+7i.

Step-by-step explanation:

According to the complex conjugate root theorem, if a complex number is a root of a polynomial, then its conjugate is also a root of that polynomial.

It means, if a+ib is a complex root of a polynomial, then its conjugate a-ib is also the root of that polynomial.

It is given that the a polynomial has one root that equals 5-7i.

To find the conjugate of a complex number the sign of imaginary part is changed.

The conjugate of 5-7i is 5+7i.

A polynomial has one root that equals 5-7i, using complex conjugate root theorem 5+7i is the other root of this polynomial.

Answer 2

Answer:

Answer:

The other root is 5 + 7i.

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If x = 2/9 and y = 3/7 work out the value of x + y

Answers

Answer:

$(41)/(63)$

Step-by-step explanation:

=> x+y

Putting x = $(2)/(9)$ ; y = $(3)/(7)$

=> $(2)/(9) +(3)/(7)$

LCM = 63

This will make the expression

=> $(14+27)/(63)$

=> $(41)/(63)$

This is the required factorized form

Answer:

$\boxed{\sf (41)/(63)}$

Step-by-step explanation:

hi, it means that we have to compute

$(2)/(9)+(3)/(7)=(7*2+3*9)/(7*9)=(14+27)/(7*9)=(41)/(63)$

1. The price of one share of a stock fell 4 dollars each day for 8 days. Howmuch value did one share of the stock lose after 8 days?
2. A credit card company charges a late fee of 25 dollars each time a customer
fails to pay on time. A customer missed the payment 4 times last year. At
the customer's request and out of courtesy, the credit card company
decides to cancel all late fees for that year. Write a numerical expression to
show how much money was return.

Answers

Step-by-step explanation:

$4 for 8 days. that means $4 on each and every day, 8 times.

so, in total that is 4 × 8 = $32

that is how multiplications work.

m×n means that m is added n times (or vice versa and n is added m times).

similar here.

$25 each time the customer missed a payment. and he missed 4 times that year.

the bank returned the fees for all 4 occasions. so,

returned money = 25 × 4 = $100

Sara puts $4000 into an investment yielding 5% annual simple interest; she left the money in for five years. How much interest does Sara get at the end on those 5 years?

Answers

Answer:

1000

Step-by-step explanation:

4000.

5% annual, so 5x5=25

4000 of 25%

1000

The price of a new car is $42,500. If sales tax is 9%, then how much will you pay in total for the car?

Answers

Answer:

$46325 in total for the car

Step-by-step explanation:

Brain dead someone help

Answers

Answer:

cant see it

Step-by-step explanation:

can you flip it pls

What is the value of x when 3x=54?
A) x=18
B) x=51
C) x=57
D) x=162

Answers

Answer:

Step-by-step explanation:

54 ÷ 3 = 18

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

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