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Naddik [55]
2 years ago
12

(x-3)^(2)-(x+1)^(2) Remove the brackets and simplify

Mathematics
2 answers:
Alex2 years ago
8 0

Answer:

The correct answer to your question is -8

Dominik [7]2 years ago
7 0

Answer:

- 8x + 8

Step-by-step explanation:

(x - 3)² - (x + 1)² ← expand factors using FOIL

= x² - 6x + 9 - (x² + 2x + 1) ← distribute parenthesis by - 1

= x² - 6x + 9 - x² - 2x - 1 ← collect like terms

= - 8x + 8

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Find the median<br> 45. 28 37 30 42 44 35 40
jasenka [17]

Answer:

Step-by-step explanation:

The median means the number in the middle, I look at the word median and think mid! So by ordering the numbers from highest to lowest you cross one off from each end back and forth! So you cross off 45, then 28, 44 then 30, 42 then 35 leaving one last number 40!! That is your median :)

7 0
3 years ago
Read 2 more answers
These are the first six terms of a sequence with a1= - 3: - 3, 8, 19, 30, 41, 52, … Find a recursive formula for this sequence t
ad-work [718]

Answer:

a(n+1)=a(n)+11

Step-by-step explanation:

The difference between two consecutive elements is 11.

8=-3+11\\19=8+11\\30=19+11\\41=30+11\\52=41+11\\

Hence a(n+1)=a(n)+11

6 0
3 years ago
Colin surveyed 12 teachers at school to determine how much each person budgets for lunch. He records his results in the table. W
zmey [24]

Answer:

<em>As mean and median are equal, so the data will be in normal distribution in shape of a symmetrical "bell curve".</em>

Step-by-step explanation:

The given data:   10   5   8   10   12   6   8   10   15   6   12   18

<u>Mean is the simple average of all data</u>. As, there are total 12 data, so the Mean will be:  \frac{10+5+8+10+12+6+8+10+15+6+12+18}{12}= \frac{120}{12}=10

For finding the Median, <u>first we need to rearrange the data according to the numerical order and then identify the middle value</u>. So........

5   6   6   8   8   10   10   10   12   12   15   18

Here the middle values are 10 and 10. So, the median will be the average of those two middle values.

Thus, Median =\frac{10+10}{2}=\frac{20}{2}=10

We can see that, <u>the relationship between the mean and the median is "they are equal"</u>. So, the data will be in normal distribution and the shape will be symmetrical "bell curve".

8 0
2 years ago
Read 2 more answers
Help me please ..........................
attashe74 [19]

Step-by-step explanation:

3 0
3 years ago
Make 24 using 1,2,2,7
alexdok [17]
7 times 2=14
14 times 2=24
24 times 1=24
5 0
3 years ago
Read 2 more answers
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