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2 years ago

How would the expression x-9 be rewritten using Difference of Squares?

Mathematics

1 answer:

yaroslaw [1]2 years ago

4 0

Answer:

Step-by-step explanation:

(x+3)(x-3)

x squared and -9 are both square numbers.

the square root of x^2 is x

the square root of -9 is 3. so you just need to write (x+3)(x-3)

you can check by expanding the brackets and the middle x terms should cancel out

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Let P = 0.5 0.1 0.5 0.9 be the transition matrix for a Markov chain with two states. Let x0 = 0.5 0.5 be the initial state vecto

max2010maxim [7]

Answer:

Complete solution is given in the images attached below for better demonstration

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2 years ago

Antoinette solves the linear equation 3(x-3)+2x+9 = 2X+ 2(x-1) using the steps shown below.

taurus [48]

Answer:

Antoinette's error

Option A) She distributed incorrectly.

Step-by-step explanation:

We are given the following information in the question:

Antoinette solves the linear equation

$3(x-3)+2x+9 = 2x+ 2(x-1)$

Antoinette made mistake in step 1 that is she did not distributed correctly.

If she would have distributed correctly, then she would have got the following solution:

$3(x-3)+2x+9 = 2x+ 2(x-1)\\\text{Step 1: }3x-9+2x+9 = 2x + 2x-2\\\text{Step 2: }5x = 4x -1\\\text{Step 3: }5x-4x = -1\\\text{Step 4: }x = -1$

Substituting x = -1 in the given equation, we gwt:

$3(-1-3)+2(-1)+9 = 2(-1)+ 2(-1-1)\\-12-2+9 = -2-4\\-6=-6\\\text{which is true}$

Antoinette's error

Option A) She distributed incorrectly.

5 0

3 years ago

Read 2 more answers

Gregg’s average rate of speed is ________ miles per hour

tensa zangetsu [6.8K]

Divide the total distance traveled by the total time spent traveling. This will give you your average speed. S = 56.67 {\displaystyle S=56.67} . So if Ben traveled 50 mph for 3 hours, 60 mph for 2 hours, and 70 mph for 1 hour, his average speed was about 57 mph.

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3 years ago

A ______________ divides a segment or angle in half.

densk [106]

Answer:

bisector

Step-by-step explanation:

A <u>bisector</u> divides a segment or angle in half.

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2 years ago

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The diameter of a basketball is 245 cm. What is the circumference?

maks197457 [2]

Answer: 769.3

Step-by-step explanation:

$C=2\pi r\\$

C=2*3.14*122.5

245/2=122.5

C=769.3

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3 years ago