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valkas [14]
2 years ago
15

Which best explains whether a triangle with side lengths 2 in., 5in., and 4in. is an acute triangle?

Mathematics
1 answer:
Amiraneli [1.4K]2 years ago
7 0
Yes,  I would say so, or a right triangle.
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Help me please.<br><br> Rounding questions.
ehidna [41]

Step-by-step explanation:

a) 6400

b) 4800

c) 32000

hope this answer helps you dear!

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Twice a number increased by 2 is zero
Dmitry_Shevchenko [17]
Alright, so 2x+2=0 (with x being the number) is what I'm getting from this. Subtract 2 from both sides to get 2x=-2, and then divide by 2 to get x=-1
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Rotate the point (7,8) around the origin 90 degrees counterclockwise.
Juliette [100K]
The answer is (-8,7)

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2 years ago
Help! <br> Find the value of X and simplify completely.
Svetach [21]

Answer:

x = 8√5

Step-by-step explanation:

In the figure attached, there are three right angle triangles.

So, by Pythagoras theorem,

y²+ 4² = z²

y² + 16 = z²------(1)

Similarly x² = 16² + y²--------(2)

and (16 + 4)² = x² + z²

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Now we put the value of z² from equation 1 to equation 3

20² = x² + y² + 16

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Now we put the value of y² from equation 4 to equation 2

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x = 8√5

Therefore x = 8√5 will be the answer.

8 0
3 years ago
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If - 4x + 6y = 9 and -2x – 7y = -8 are true equations, what would be the value of -2x + 13y?
UkoKoshka [18]

Answer:

  17

Step-by-step explanation:

The expression of interest is the difference of the two given expressions.

  (-4x +6y) -(-2x -7y) = (9) -(-8)

  -2x +13y = 17

The value is 17.

_____

<em>Additional comment</em>

You could go to the trouble to solve the two equations for x and y, then compute the value of the expression you want. As we saw above, that is not necessary.

The first step in problem solving is always "look at the given information and how it relates to what you are asked." A little time spent doing that can save a lot of effort in the actual problem solving process.

6 0
2 years ago
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