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4 years ago

Is the following sequence arithmetic? If so, identify the common difference. 2.9, 2.7, 2.5, 2.3,

Mathematics

2 answers:

Alenkasestr [34]4 years ago

3 0

The common difference is -2

Goshia [24]4 years ago

3 0

Notice that 2.7 = 2.9 - 0.2; 2.5 = 2.7 - 0.2, and so on. So the common difference is -0.2.

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Which of the following constants can be added to x2 - 3x to form a perfect square trinomail?

serious [3.7K]

The constant that can be added to $x^2$ - 3x to form a perfect square trinomial is $2\frac{1}{4}$

The given expression is

$x^2$ - 3x

To form a perfect square trinomial

$(a-b)^2 =a^2-2ab+b^2$

The given expression is

$x^2$ - 3x

first we have to add a constant term with it

$x^2$ - 3x + z

By comparing the given expression and the perfect square trinomial

$a^2 =x^2$

a = x

Similarly

-2ab = 3x

where know a =x

Then,

-2b = 3

b = -3/2

Similarly

$b^2 = z$

$(\frac{-3}{2})^2$ = z

9/4 = z

Convert the simple fraction to mixed fraction

9/4 = $2\frac{1}{4}$

Hence, the constant that can be added to $x^2$ - 3x to form a perfect square trinomial is $2\frac{1}{4}$

The complete question is :

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

$1\frac{1}{2},2\frac{1}{4}$ and $4\frac{1}{2}$

Learn more about perfect square trinomial here

brainly.com/question/16615974

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1 year ago

Evaluate each expression

Alla [95]

Answer:

B. 13

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9^1/2+√25+8÷2+3²

(3²)^1/2+5-4+9

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1/2*3/5*(2^3-6)+1/5

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Answer:

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4.65 is the new temperature.

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