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2 years ago

6. The value of the polynomialx2 -x -1 at x = -1 is *

Mathematics

1 answer:

Licemer1 [7]2 years ago

7 0

Answer:

-2

Step-by-step explanation:

Replace x with -1

(-1)2 - (-1) - 1

-2 + 1 - 1

-2

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What is another name for <1?

Oksanka [162]

Option A:

The another name for ∠1 is ∠JLK.

Solution:

How to Label Angles :

There are two main ways to label angles:

1. Give the angle name by a number or a lower case letters.

2. The second way to name the angle is indicating by the vertex.

Usually the angle is denoted by three letters.

First letter and the second letter denotes the arms of the angle and the middle of the letter denotes the angle (its vertex).

To find the another name for ∠1.

The arms of the angle are LJ and LK and the vertex is L.

So, the name of the angle is ∠JLK.

Middle letter is the actual angle.

Therefore the another name for ∠1 is ∠JLK.

Option A is the correct answer.

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3 years ago

Use a net to find the surface area of the cereal box.

lana [24]

Answer:

what is the side, length, and width

Step-by-step explanation:

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3 years ago

Is (-2,5) a solution to the inequality y<-3x+4 show steps

Fittoniya [83]

We start with $(-2,5)$ for $y\ \textless \ -3x+4$ . $y\ \textless \ -3x+4

5\ \textless \ 6+4

5\ \textless \ 10$ Yes. This is true.

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3 years ago

Solve x2 + 1/2x +1/16=4/9

kolezko [41]

<u>Answer:</u>

x = 0.417 or x = -0.917

<u>Step-by-step explanation:</u>

We are given the following expression and we are to solve it for the variable x:

$x ^2 + \frac { 1 } { 2 } x + \frac { 1 } { 1 6 } = \frac { 4 } { 9 }$

We will find the least common multiple of 2. 6 and 9:

$x^2 \times 144 +\frac{1}{2}x \times 144 +\frac{1}{16} \times 144 = \frac{4}{9} \times 144$

Simplifying it to get:

$144x^2+72x+9=64$

$144x^2+72x+9-64=0$

$144x^2+72x-55=0$

Using the quadratic formula to solve for x:

$x=\frac{-b \pm\sqrt{b^2-4ac} }{2a}$

$x=\frac{-72 \pm\sqrt{72^2-4(144)(-55)} }{2a}$

$x=\frac{5}{12}$ or $0.417$

$x=-\frac{11}{12}$ or $-0.917$

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3 years ago

Wanda jumped rope 25 times every minute. What is the algebraic equation to express the function of the total number of times Wan

jasenka [17]

The answer is a m=25j

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3 years ago

6. The value of the polynomialx2 -x -1 at x = -1 is *​

6. The value of the polynomialx2 -x -1 at x = -1 is *