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Katarina [22]
3 years ago
11

Which of the following is an arithmetic sequence?

Mathematics
1 answer:
guajiro [1.7K]3 years ago
7 0

Answer:

D

Step-by-step explanation:

In an arithmetic sequence, the order must be least to greatest and there must be a consecutive sequence in addition, not any other operation. A is wrong because it is in greatest to least. B is wrong because 0 is the least so all 0's should be at the front instead. C is wrong because each following value is x2.

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Each participant in a community garden is allotted a rectangular plot that measures 18 feet by 45 feet. How much fencing is need
olganol [36]
When you want to know the amount of fencing needed, you have to find the perimeter of the enclosed space. For the shape of a rectangle, the perimeter is the sum of its sides. Its sides consist of 2 equal lengths and 2 equal widths. Therefore:

A = 2L + 2W = 18(2) + 45(2) = 126 feet

It will need 126 feet of fencing.
7 0
3 years ago
Use what you know Pythagorean Triangles to determine the measure of the third side.
Tema [17]

Answer:

The formula to find the third side of the triangle is a^2+b^2=c^2

Step-by-step explanation:

In order to find value of the third side without knowing any degree measurements, you need to know value of two sides. Variable c, in this case, is a hypotenuse (the longest side of the triangle).

5 0
3 years ago
What is 3/9 and 123/999 as a decimal
Nutka1998 [239]
To convert fractions to decimals, divide the denominator into the numerator

3/9= .333333
123/999=.123123

hope this helps
6 0
4 years ago
Derek reads at a rate of25 words per minute. If he reads constantly until he is finished, how long with it take him to read a 22
emmasim [6.3K]
225/25= 9 

It would take Derek 9 minutes to read the 225-word article. 

I hope this helps!
~kaikers
4 0
4 years ago
Expand
ddd [48]

Answer:

The working of expressions is shown below.

Step-by-step explanation:

We are given the following information:

a) Expand

3(x+4)\\3\times x + 3\times 4\\3x + 12

b) Expand and simplify

4(x+5)-2(x-3)\\=(4x + 20) -(2x-6)\\=( 4x-2x) + (20 + 6)\\= 2x + 26\\=2(x +13)

c) Expand

(x+2)(x+7)\\=x\times x + x\times 7 + 2\times x + 2\times 7\\= x^2 + 7x + 2x + 14\\=x^2 + 9x +14

d) Factorize fully

12x-18\\=6(2x-3)

3 0
3 years ago
Read 2 more answers
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