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2 years ago

Multiply (2x^2+4x-3)(x^2-2x+5)

1 answer:

8 0

To answer this, you just go around multiplying the terms from the first set by everything in the second set. (For example, multiply 2x^2 by x^2, next by -2x, and finally by 5)

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41 + 2y = 0 - 4x – 9y= - 28 Solve each system by elimination

Iteru [2.4K]

Question:

4x + 2y = 0

- 4x – 9y= - 28

Solve each system by elimination

Answer:

The solution is x = -2 and y = 4

Solution:

Given system of equations are:

4x + 2y = 0 ------ eqn 1

-4x – 9y = - 28 ------- eqn 2

We have to solve the system of equations by elimination method

Add eqn 1 and eqn 2

4x + 2y -4x -9y = 0 - 28

0 + 2y - 9y = -28

-7y = -28

Divide both sides by -7

y = 4

Substitute y = 4 in eqn 1

4x + 2(4) = 0

4x + 8 = 0

4x = -8

Divide both sides by 4

x = -2

Thus the solution is x = -2 and y = 4

4 0

3 years ago

What is the approximate volume of a cone with a height of 12 in and radius of 9 in ? Use 3 14 to approximate pi, and express you

Rama09 [41]

Answer:

1017.36

Step-by-step explanation: The formula for cone volume is 3.14(r^2)(h/3). Plug in all of your values to get the answer.

3 0

3 years ago

Could someone please help me i really don't understand this

Ray Of Light [21]

Answer:

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

So this should be one of the last few ones

sergeinik [125]

Answer:

Step-by-step explanation:

Because you have to use the Pythagorean theorem to solve for this.

8 0

2 years ago

Based on the polynomial remainder theorem, what is the value of the function when x=−6 ?

Vaselesa [24]

ANSWER

$f( - 6) = 10$

EXPLANATION

The given function is
$f(x) = {x}^{4} + 8 {x}^{3} + 10 {x}^{2} - 7x + 40$

According to the remainder theorem,

$f( - 6) = R$
where R is the remainder when
$f(x)$

is divided by
$x + 6$

We therefore substitute the value of x and evaluate to obtain,

$f( - 6) = { (- 6)}^{4} + 8 {( - 6)}^{3} + 10 { (- 6)}^{2} - 7( - 6)+ 40$

$f( - 6) = 1296 + 8 ( - 216) + 10 (36) - 7( - 6)+ 40$

$f( - 6) = 1296 - 1728 + 360 + 42+ 40$

This will evaluate to,

$f( - 6) = 10$

Hence the value of the function when
$x = - 6$

is
$10$

According to the remainder theorem,
$10$
is the remainder when

$f(x) = {x}^{4} + 8 {x}^{3} + 10 {x}^{2} - 7x + 40$
is divided by
$x + 6$

3 0

2 years ago