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olga55 [171]
3 years ago
12

Can someone help me ASAP

Mathematics
1 answer:
nalin [4]3 years ago
8 0
#2 is C because you are looking at the Y-axis and i don't know if you needed help for #3 but if you did I can't see the question.
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What is 1.1 (.1 repeating) as a fraction?
melamori03 [73]

Answer:

\frac{10}{9}

Step-by-step explanation:

1 .1 ( .1 repeating) = \frac{10}{9}

Let x=0.1

Then 10x  = 1.1111...

= 10 + 0.(1)

= 10+ x.

So, 9x=10 and lastly, x=  \frac{10}{9}

6 0
3 years ago
Use sigma notation to represent the sum of a geometric series with a first term of 3 and a common ratio of . A. B. C. D.
maksim [4K]

Answer:

\Sigma_{k=1}^{n}[3(\frac{10}{9} )^{k-1}]

Step-by-step explanation:

A geometric sequence is a list of numbers having a common ratio. Each term after the first is gotten by multiplying the previous one by the common ratio.

The first term is denoted by a and the common ratio is denoted by r.

A geometric sequence has the form:

a, ar, ar², ar³, . . .

The nth term of a geometric sequence is ar^{n-1}

Therefore the sum of the first n terms is:

\Sigma_{k=1}^{n}(ar^{k-1})

Given a geometric series with a first term of 3 and a common ratio of 10/9, the sum of the first n terms is:

\Sigma_{k=1}^{n}[3(\frac{10}{9} )^{k-1}]

5 0
3 years ago
Plllsss help!!! <br>What is the value of x?​
Flura [38]

Answer:

X = 149

Step-by-step explanation:

A full circle is 360 degrees

Add 160+51=211

360-211=149

8 0
3 years ago
Read 2 more answers
6 - 2/3 (x+5) = 4x solve algebraically for the exact value of x
luda_lava [24]

Answer:

x = 2

Step-by-step explanation:

1 - Rewrite

6 - 2/3 (x+5) = 4x

2 - Distribute

6 - 2/3x + 10/3 = 4x

3 - Combine like terms and get x alone

6 10/3 - 2/3x = 4x

           +2/3x  +2/3x

          6 10/3 = 4 2/3x

------------------------------- Convert to decimals

6.3333333333.... = 4.333...x

-------------------------------- Divide both sides by 4.33...x

2 = x

Hope this helps :)

3 0
3 years ago
Rút gọn M=[ căn x -2/x-1- căn x +2/x+2 căn x+ 1] nhân x bình-2x+1/2 với x&gt;0 x khác 1
Ymorist [56]

Answer:

Step-by-step explanation:

3 0
3 years ago
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