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a_sh-v [17]
4 years ago
7

Someone please help, this is my last question!

Mathematics
1 answer:
andrew11 [14]4 years ago
7 0

Answer:

9.5

Step-by-step explanation:

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Which formula can be used to describe the sequence below 27,9,3​
Ierofanga [76]

Answer:

a_n=27 \cdot (\frac{1}{3})^{n-1}.

Step-by-step explanation:

This is a geometric sequence that means there is a common ratio.  That means there is a number you can multiply over and over to get the next term.

The first term is 27.

The second term is (1/3)(27)=9.

The third term is (1/3)(9)=3.

So the common ratio is 1/3.

That means you can keep multiplying by 1/3 to find the next term in the sequence.

The explicit form for a geometric sequence is a_n=a_1 \cdot r^{n-1} where a_1 is the first term and r is the common ratio.

We are given a_1=27 and r=\frac{1}{3}.

So the explicit form for the given sequence is a_n=27 \cdot (\frac{1}{3})^{n-1}.

3 0
3 years ago
Gotta need answers fast like asap, it’s geometry, just fill the blanks pls
pentagon [3]

<em>Two </em>or <u>more</u> triangles are said to be congruent if and only if they have <u>equal</u> lengths of <em>sides</em> and <u>equal</u> measures of <em>angles</em>.

Thus, the required <u>proof</u> is as shown below:

   <u>STATEMENTS </u>                                             <u>REASONS</u>

1. ΔABC and ΔDEC with AB ≅ DE;

  BC ≅ EC; <1 ≅ <2                                          Given

2. <1 and < ABC; < 2 and <DEC are sup     <u>Sum</u> of angles on a <em>straight </em>line

3. <ABC ≅ <DEC                                <em>Congruent</em> angles of <u>similar</u> triangles

4. ∴ΔABC ≅ ΔDEC                              <em>Side-Angle-Side</em> (SAS) postulate

5. ∴<ACB ≅ <DCE                                         CPCTC postulate

For more clarifications on the properties of congruent triangles, visit: brainly.com/question/1675117

#SPJ1

4 0
2 years ago
Put the integers in order from least to greatest. = - 3 =5 =2 = - 4
andre [41]

Answer:

-4, -3, 2, 5

Step-by-step explanation:

hope this helps.

5 0
3 years ago
Identify whether the following equation has a unique solution, no solution, or infinitely many solutions.
baherus [9]
The answer is in the question
4 0
3 years ago
Please help me :) I will give Brainiest to whoever does! PLEASE HURRY
Alika [10]

Answer:

18.33

Step-by-step explanation:

4 0
3 years ago
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