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Olegator [25]
2 years ago
8

How many triangles can be constructed with angles measuring 60º, 60º, and 40º?

SAT
1 answer:
aivan3 [116]2 years ago
3 0

Answer:

0

Explanation:

3 angles in a triangle always add up to 180 degrees

With measures of 60,60 and 40, the angles only add up to be 160.

Hence, it's impossible to create triangles using these 3 angles measures.

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In a theater, there are 15 chairs in the first row, each row has 3 more chairs than the previous row, and there are 15 rows. how
Nimfa-mama [501]

The 1st row has 15 chairs.

The 2nd row has 15 + 3 = 18 chairs.

The 3rd row has 18 + 3 = 15 + 2•3 = 21 chairs.

The 4th row has 21 + 3 = 15 + 3•3 = 24 chairs.

The pattern continues, so that the n-th row has 15 + (n - 1)•3 = 3n + 12 chairs.

If there are 15 rows, then the total number of chairs is

\displaystyle \sum_{n=1}^{15} (3n + 12) = 3 \sum_{n=1}^{15} n + 12 \sum_{n=1}^{15} 1 = 3\cdot\frac{15\cdot16}2 + 12\cdot15 = \boxed{540}

where we use the formulas

\displaystyle \sum_{n=1}^N 1 = N

\displaystyle \sum_{n=1}^N n = \frac{N(N+1)}2

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3 years ago
The y -intercepts, P and Q, of two perpendicular lines
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Answer:

A) 45

Explanation:

1/2×b×h

1/2×6×8

1×6×4

=24+21=45

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4 years ago
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A student is giving a presentation on the events that occurred during World War II. He wants to use a graphic organizer that sho
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A timeline would be best suited for the purpose.
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Tyler is preparing a speech on skateboarding for his physics class. For speech support, he is using facts. To make his speech mo
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For tyler to make his speech on skateboarding for his physics class more interesting, Tyler should; include striking visual aids.

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Since Tyler is preparing a speech on skateboarding, he needs to use visual aids to make it more interesting.

Now, visual aids are unique techniques and methods that are used to present the specific topic in front of audience and improve the audience's understanding.

These visual aids could include, graphs and pictures to use to illustrate points better and make a very good visual impression.

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In Project development, Agile Practice is one of the best methods of product delivery because the team is self-organizing and self-managing

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Apart from the two common trait stated above, the agile team is very dynamic and adapts to changes even during production or at any point in the product development cycle.

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