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3 years ago

Is 14 a root of the equation 2x - 16 = - 44 ? Why or why not

Mathematics

1 answer:

vampirchik [111]3 years ago

4 0

Answer:

Step-by-step explanation:

If x = 14 is a root then substituting x = 14 into the equation should make both sides equal.

2(14) - 16 = 28 - 16 = 12 ≠ - 44

Thus x = 14 is not a root of the equation

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What's 17x=18(1/3) ?

Mariulka [41]

<span>17x=18(1/3)
17x = 6
x = 6/17

hope it helps</span>

7 0

3 years ago

Can you solve this question for me?

krek1111 [17]

y+2 = 3x

subtract 2 from each side

y = 3x-2

4 0

3 years ago

Read 2 more answers

taurus [48]

Answer:

$x^2 - 2x + 10$ , option B

Step-by-step explanation:

Complex numbers:

The most important relation that involves complex numbers is given by:

$i^2 = -1$

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

In this question:

The solutions are:

$x_1 = 1 - 3i, x_2 = 1 + 3i$

We have to find the polynomial. All option have $a = 1$ . So

$(x - (1 - 3i))(x - (1 + 3i)) = x^2 - x(1 + 3i) - x(1 - 3i) + (1 - 3i)(1 + 3i) = x^2 - x -3ix - x + 3ix + 1^2 - (3i^2) = x^2 - 2x + 1 - 9i^2 = x^2 - 2x + 1 - 9(-1) = x^2 - 2x + 10$

The correct answer is given by option b.

6 0

3 years ago

1986gram=................litters

sladkih [1.3K]

Answer:

I think you have asked a wrong question there should be 1986mililitre or _kg

4 0

3 years ago

5x-2y=30 complete the missing solution to the equation

astra-53 [7]

Answer:

I would have to go with x = 8 and y = 5, meaning the solution is (8, 5).

Step-by-step explanation:

$5x - 2y = 30$

$5(8) - 2(5) = 30$

$40 - 10 = 30$

$30 = 30$

4 0

2 years ago

Read 2 more answers