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kow [346]
3 years ago
14

Match the sequences with the type of sequence (arithmetic or geometric).

Mathematics
1 answer:
Anni [7]3 years ago
3 0
9, 4, -1, -7
Arithmetic because it has a common difference of 5.

4, 10, 16, 22
Arithmetic because it has a common difference of 6.

2, -6, 18, -54
Geometric because it has a common ratio of -3.

4, 4, 4, 4
Both because it has a common difference of 0 and a common ratio of 1.

Hope this helps :)
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C). \:  a=6  \: square \:  root  \: 3, \:  b=12  \: square  \: root \:  3, \:  c=6  \: square  \: root  \: 2 \\

7 0
3 years ago
What are climate zones?
VikaD [51]
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3 0
3 years ago
The length of a rectangular garden is 8 feet longer than it’s width. The garden is surrounded by a sidewalk that is 4 feet wide
Westkost [7]
Answer:

The length = 20
The width = 12 

Explanation:

Let the Length of the garden be L and the Width W 
Therefore the area of the garden = L*W 
But we know that L = W + 8 
Therefore the area of the garden can be expressed as W*(W + 8) 
When the brackets are expanded this equals W^2 + 8W

The area of the recctangle which includes the path and garden will have a length of L + 8 (ie the length of the garden + 4 feet at the top and 4 feet at the bottom) 
The width will be W + 8 (width of garden + 4 feet at the left and 4 feet at the right) 
Therefore the area will be (W + 8)*(L +8) 
Once again we know that L = W + 8 
Therefore the area of the path/garden = (W +8)(W +8 +8) 
=(W +8)(W +16) 
=W^2 +24W + 128 

We know that the path alone has an area of 320 square feet. Therefore if we subtract the area of the garden (W^2 + 8W) from the area of the path/garden the area left is the area of the path only 

Therefore W^2 + 24W + 128 - (W^2 + 8W) = 320 
W^2 + 24W + 128 - W^2 - 8W = 320 
Simplify 
16W + 128 = 320 
Subtract 128 from both sides of the equation 
16W = 192 
divide both sides of the equation by 16 
W = 12 
As L = W + 8 
L = 12 + 8 = 20 
7 0
3 years ago
Please help! <br>what is the answer to this question?<br>​
tiny-mole [99]

Answer:

The clue to find 'x' is-

  • As both, the lines here are intersecting at a point to form VERTICALLY OPPOSITE ANGLES.

According to this theory (2x+20)=60

So, (2x+20)=60

=  2x=60-20

=  2x= 40

=  x=40/2

=  x=20 degrees

5 0
3 years ago
Read 2 more answers
Here is a set of four number cards.
s2008m [1.1K]

Answer:b

Step-by-step explanation:

5 0
3 years ago
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