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kolezko [41]
3 years ago
15

Please help!!! Thanks!

Mathematics
1 answer:
AlladinOne [14]3 years ago
3 0
The answer should be 20
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In an arithmetic sequence the sum of the first six odd-numbered terms (a1,a3,a5,a7,a9 and a11) is 60. find the sum of the first
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Answer:

Im so sorry!

Step-by-step explanation:

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Jane is building a tank for her pet snake. The tank’s minimum length should equal two-thirds of the snake’s length, and the tank
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Find the area of an equilateral triangle with apothem 7 cm.
lbvjy [14]
So hmm check the picture below

using the 30-60-90 rule, we get that much.. .bear in mind, an equilateral triangle has all equal sides, and therefore, all equal angles, so each angle is 60°, run a median through it from the center, and you split it in half

\bf \textit{area of an equilateral triangle}\\\\
A=\cfrac{s^2\sqrt{3}}{4}\qquad 
\begin{cases}
s=\textit{length of one side}\\
----------\\
s=14\sqrt{3}
\end{cases}\implies A=\cfrac{(14\sqrt{3})^2\sqrt{3}}{4}
\\\\\\
A=\cfrac{14^2\cdot 3\sqrt{3}}{4}\implies A=\cfrac{588\sqrt{3}}{4}\implies A=147\sqrt{3}

8 0
3 years ago
What is the median of the data set below? 57, 21, 11, 35, 43, 19​
Naily [24]

Answer:

28

Step-by-step explanation:

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8 0
3 years ago
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Question 2 of 10<br> 1 Point<br> Round 849 to the nearest ten.
Setler79 [48]

Answer:

850

Step-by-step explanation:

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