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Molodets [167]
3 years ago
15

A2 + 2ab + b2-9 Pls help

Mathematics
2 answers:
Anarel [89]3 years ago
8 0

Answer:

(a + b + 3 ) ( a + b − 3 )

Step-by-step explanation:

valentinak56 [21]3 years ago
4 0

Answer:

{\huge{\mathfrak{\underbrace{\pink{Answer}}}}}

<h3><em>=</em><em>9</em><em>-</em><em>[</em><em>a²</em><em>-</em><em>2</em><em>a</em><em>b</em><em>+</em><em>b²</em><em>]</em></h3><h3><em>=</em><em>[</em><em>3</em><em>]</em><em>²</em><em>-</em><em>[</em><em>(</em><em>a</em><em>)</em><em>²</em><em>-</em><em>2</em><em>(</em><em>a</em><em>)</em><em>(</em><em>b</em><em>)</em><em>+</em><em>(</em><em>b</em><em>)</em><em>²</em><em>]</em></h3><h3><em>=</em><em>[</em><em>3</em><em>]</em><em>²</em><em>-</em><em>[</em><em>a-b</em><em>]</em><em>²</em></h3><h3><em>=</em><em>[</em><em>(</em><em>3</em><em>)</em><em>-</em><em>(</em><em>a-b</em><em>)</em><em>]</em><em>[</em><em>(</em><em>3</em><em>)</em><em>+</em><em>(</em><em>a-b</em><em>)</em><em>]</em></h3><h3><em>=</em><em>(</em><em>3</em><em>-</em><em>a</em><em>+</em><em>b</em><em>)</em><em>(</em><em>3</em><em>+</em><em>a-b</em><em>)</em></h3>

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<em>I </em><em>hope</em><em> </em><em>this</em><em> </em><em>helps</em><em> </em><em>you</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>

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A puppy store has a puppy that weighs 72 ounces how many pounds does it weigh 1 pound = 16 ounces
tresset_1 [31]

4.5 pounds

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HOW-TO:

1. we know that 1 pound is 16 ounces.

So let's find how many of 16 are needed for 72.

72 ÷ 16 = 4.5

Use that answer and multiply it by the number of pounds per 16 ounces.

You get 4.5 pounds.

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3 years ago
Sean places 28 tomato plants in rows. All rows contain the same number of plants. There are netween 5 and 12 plants in each row.
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Step-by-step explanation:

To find the number of plants in each row between 5 and 12 requires us to find the factors of the total 28.

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Answer:

the answer is 7:6 :)

Step-by-step explanation:

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Step-by-step explanation:

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The student government at the local middle school surveyed students to help plan the end-of-year party. For the first sample, th
aleksandr82 [10.1K]

Answer:

Explained below.

Step-by-step explanation:

Convenience sampling is a kind of non-probability-sampling (i.e. all items doesn’t have an equivalent chance of being selected), which doesn’t comprises of random collection of items. Convenience sampling is where we take in items which are easy to reach.  This sort of sampling technique results in a biased sample.

Systematic sampling is a kind of probability sampling method in which individuals from a larger population are nominated according to a random initial point and a static, periodic interval. If the individual <em>k</em> is selected as the first sample then the sample space consists of every <em>k</em>th individual.

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