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schepotkina [342]
4 years ago
15

15 can be written as ____.

Mathematics
1 answer:
Gnoma [55]4 years ago
8 0
The answer is 5+5+5=15
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I need to know the answer
ivanzaharov [21]

Answer: 6 i think

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Find the sum of the first 30 terms of the sequence below an=3n+2
Solnce55 [7]
First off, let's find the 1st term's value, and the 30th term's value,

\bf a1=3(1)+2\implies a1=5\qquad \qquad \quad   a30=3(30)+2\implies a30=92\\\\
-------------------------------\\\\
~~~~~~~\textit{ Sum of an arithmetic sequence}\\\\
S_n=\cfrac{n(a1+an)}{2}~ 
\begin{cases}
n=n^{th}\ term\\
a1=\textit{first term's value}\\
----------\\
a1=5\\
a30=92\\
n=30
\end{cases} \implies S_{30}=\cfrac{30(5+92)}{2}
\\\\\\
S_{30}=15(97)
6 0
3 years ago
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How does the volume of a cone change if its radius and height are both tripled
Evgesh-ka [11]
The volume formula could be re-written to help understand this, as V = π*3r^2*3h. If you solve for this, you can conclude that the volume would be multiplied by 27.
6 0
3 years ago
What is x if 3x + 4 = 19?
Ymorist [56]
If you subtract 4 from both sides your left with 15, then divide by 3 to find x. your left with x=5
8 0
3 years ago
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Solve using the substitution method<br> 4x-2y=8 <br> y=1/2x +2
bekas [8.4K]

Hello there! the answer would be x = 3/4.

You are given the two equations: 4x - 2y = 8 and y = 1/2x + 2. You are asked to solve via substitution. To do this, substitute the value of y in the second given equation into the first given equation, and solve using PEMDAS.

4x - 2(1/2x + 2) = 8 - Start by distributing 2 into (1/2x + 2).

4x - 1x + 4 = 8 - Combine like terms.

3x + 4 = 8 - Subtract 4 from both sides.

3x = 4 - divide both sides by 3.

x = 3/4. This is your final answer.

I hope this was helpful, have a great day! :)

7 0
3 years ago
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