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3 years ago

Solve each system by ELIMINATION 1) -5x-Y=21 - 4x Y=6

Mathematics

1 answer:

sesenic [268]3 years ago

5 0

-5x-Y + -4x + Y = -9x
21 +6= 27
-9x = 27
x= -3

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7) 5x – 3y – 4z = 24<br> 5x + 3y + 5z = 27<br> 4x - 3y + 5z = 28

OLEGan [10]

Answer:

Step-by-step explanation:

8 0

3 years ago

Write a polynomial function of least degree with integral coefficients that has the

frutty [35]

A polynomial function of least degree with integral coefficients that has the

given zeros $f(x)=x^4+x^3+9x^2+9x$

Given

Given zeros are 3i, -1 and 0

complex zeros occurs in pairs. 3i is one of the zero

-3i is the other zero

So zeros are 3i, -3i, 0 and -1

Now we write the zeros in factor form

If 'a' is a zero then (x-a) is a factor

the factor form of given zeros

$\:\left(x-3i\right)\left(x-\left(-3i\right)\right)\left(x-0\right)\left(x-\left(-1\right)\right)\\\left(x-3i\right)\left(x+3i\right)\left(x-0\right)\left(x+1\right)$

Now we multiply it to get the polynomial

$x\left(x-3i\right)\left(x+3i\right)\left(x+1\right)\\x\left(x^2+9\right)\left(x+1\right)\\x\left(x^3+x^2+9x+9\right)\\x^4+x^3+9x^2+9x$

polynomial function of least degree with integral coefficients that has the

given zeros $f(x)=x^4+x^3+9x^2+9x$

Learn more : brainly.com/question/7619478

6 0

3 years ago

Which expression has a value that is equivalent to 5n + 13 when n=−5 ?

Orlov [11]

5(-5)+13=-25+13=-12
the answer would be 4n+8
hope this helps!

8 0

3 years ago

Read 2 more answers

Sisqo score 10 points in the first half of the game. In the second half he made four shots, all three pointers. Which of the fol

olga_2 [115]

Answer:

You didn't provided the answer choices, but the answer is he scored 22 points in total.

Step-by-step explanation:

5 0

3 years ago

Find the difference:

mihalych1998 [28]

Answer:

3 1/2

Step-by-step explanation:

4 1 3

_ - _ = _

6 6 6

Then we simplify. 3 3 1

_ ÷ = _

6 3 2

Then just add your 3 and there 3 1/2 is your asnwer

8 0

3 years ago