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ddd [48]
4 years ago
8

Factor the trinomial and simplify: (x + ____ )² = _____

Mathematics
2 answers:
olya-2409 [2.1K]4 years ago
8 0
First one is -3 second -4
Ainat [17]4 years ago
7 0

Answer:

The complete expression is :  (x + <u>4</u> )² = <u>(x + 4)(x + 4)</u>

Step-by-step explanation:

We are given the equation as :  (x + ____ )² = _____

Now, this is said to be a trinomial and as the trinomial contains three terms. So, we need to fill the first blank in such a way that when we expand it, we get three terms

Let the first blank be 4

⇒ The given expression reduces to : (x + 4)²

Now, expanding the above equation

⇒ x² + 8x + 16

Now, we need to form the factors of this expression

⇒ x² + 4x + 4x + 16

⇒ x(x + 4) + x(x + 4)

⇒ (x + 4)(x + 4)

Hence, the complete expression is :  (x + <u>4</u> )² = <u>(x + 4)(x + 4)</u>

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What multiplied by itself 3 times gives you -216 please answer asap!!!
AlexFokin [52]

Answer:

-6

Step-by-step explanation:

given

x³ = -216

x = (-216)^⅓

factorize

x = [(-6)×(-6)×(-6)]^⅓

x = -6

4 0
3 years ago
Read 2 more answers
Amina posts three large letters the postage is the same for each letter she pays with a £20 note her change is £14.96 what is th
soldi70 [24.7K]

Answer:

The cost of posting one letter = £1.68

Step-by-step explanation:

Total amount Amina has = £20

Amina's change = £14.96

Total cost spent on posting the letters = £20 - £14.96 = £5.04

And we're told that she posts 3 letters in total, with the cost of posting each letter the same.

Cost of posting 3 letters = £5.04

Cost of posting only 1 letter = (£5.04/3) = £1.68

Hence, the cost of posting a letter = £1.68

Hope this Helps!!!

4 0
4 years ago
Read 2 more answers
The inequality 6-2/3x
densk [106]

Answer:

ask a teacher

Step-by-step explanation:

5 0
4 years ago
I need to solve for this 24+12R &lt; 100
Sindrei [870]

Answer:

here's the answer

Step-by-step explanation:

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6 0
2 years ago
The labor force participation rate is the number of people in the labor force divided by the number of people in the country who
zepelin [54]

Answer:

The expected participation rate is 0.637.

The standard error is 0.04397

Step-by-step explanation:

For each working age people asked, there are only two possible outcomes. Either they are in the labor force, or they are not. This means that we can solve this problem using binomial distribution probability concepts.

Binomial probability:

Expected value for the participation rate: The expected value is the probability of a success. In this problem, a success is a working age people being in the labor force. 63.7% of them are. So \pi = 0.637. This means that the expected participation rate is 0.637.

Standard error for the participation rate:

The standard error is given by the following formula:

\sigma = \sqrt{\frac{\pi(1-\pi)}{n}}.

In this problem, 120 people are asked, so \pi = 120

s = \sqrt{n\pi(1-\pi)} = \sqrt{\frac{0.637*(1-0.637)}{120}} = 0.04397.

So the standard error is 0.04397

8 0
3 years ago
Read 2 more answers
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