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2 years ago

3) Consider a triangle with side lengths 5 and 13. What are the possibilities for the third side if the

Mathematics

2 answers:

mars1129 [50]2 years ago

7 0

Answer:

find the square of both numbers

13²=169

5²=25

minus the square

169-25 to get 144

find the square root of 144

✓144=12 the third side is 12

max2010maxim [7]2 years ago

7 0

I think you already got the answer so im just gonna do this for points

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Two trains started moving at the same time, train A from Boston to New York, and train B from New York to Boston. The distance b

Ede4ka [16]

Answer:

After 1.7 hours

Explanation:

1. Calculate the average speed of train B

60mph = 3/4 (s) ⇒ s = 60 (4/3) mph = 80 mph

2. Build a table

When the two trains meet:

Train Average speed Distance time (distance/average speed)

mph

A 60 x x/60

B 80 240 - x (240 - x) / 80

3. Write the equation

The time, when the two trains meet, is the same for both trains:

$\dfrac{x}{60}=\dfrac{240-x}{80}\\ \\ \\ 80x=14,400-60x\\ \\ 80x+60x=14,400\\ \\ 140x=14,400\\ \\ x=14,400/140\\ \\ x=102.85miles$

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2 years ago

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Ilya [14]

Answer:

Given and explained below.

question 4

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$\sf sinx = \frac{opp}{hyp}$

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$\sf x = sin^{-1}(\frac{11}{13} )$

$\sf x = 57.8$

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Find the value of x. Right triangle: Hypotenuse is 11, base is x, angle is 22 degrees.

kirill [66]

We know that the trigonometric identity that uses the adjacent side and the hypotenuse is cosine. We can set this up as:
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We need to solve for x, so let's isolate it:
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3 years ago

Evaluate the expression (x + 3)(y - 2) , if x = -2, and y= 6

Butoxors [25]

Answer:

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Step-by-step explanation:

Given,

$x=-2,\,y=6$

Now, the expression

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pls mark my answer as the brainliest

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3 years ago

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Artyom0805 [142]

Step-by-step explanation:

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