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Arisa [49]
2 years ago
10

What is the simplified expression for this ?

Mathematics
1 answer:
schepotkina [342]2 years ago
5 0

Answer:

I think it is 14.1421356237. I needed you can round it down to 14.14.

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What is this awnser? 2/5y=4
MA_775_DIABLO [31]

Answer:

\frac{2}{5}y=4\quad :\quad y=10

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3 years ago
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Can someone answer number 11?
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Answer:

Step-by-step explanation:

To be rational means to be able to express the result as the ratio of two whole numbers.

a) 4/7 + (-1/3) = 12/21 - 7/21 = 5/21 so rational

b) √(4) • 2/5 = ±2 • 2/5 = ±4/5 so both solutions are rational

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Radio waves travel at the speed of light, approximately 300,000,000 m/s. Part A How much time does it take for a radio message t
jenyasd209 [6]

Answer:

Step-by-step explanation:

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You also want to understand the formula for speed.  speed = distance / time.  Whch also means, to find time you can change it to be time = distance / speed.  And hey, we have distance and speed.  768,000 / 300,000,000 = .00256, I'll leave the significant figures to you unless you need help with them.  but that's .00256 of a second.  or .00256 s

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3 years ago
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A man is 6 feet tall. To find the height of a tree, the shadow of the man and the shadow of the tree were measured. The length o
Sidana [21]

The answer is 16 ft because 6 ft tall over 4 feet 6 inches (4.5) is equal to x (tree's height) over 12 ft. You cross multiple and get 72 = 4.5x then you take 72 and divide by 4.5 to get the tree's height

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Simultaneous equations 2x+3y=13 4x-y=-2
Rufina [12.5K]

Answer:

(0.5, 4 )

Step-by-step explanation:

Given the 2 equations

2x + 3y = 13 → (1)

4x - y = - 2 → (2)

Multiplying (2) by 3 and adding to (1) will eliminate the term in y

12x - 3y = - 6 → (3)

Add (1) and (3) term by term to eliminate y

14x = 7 ( divide both sides by 14 )

x = 0.5

Substitute x = 0.5 into either of the 2 equations and evaluate for y

Substituting into (1)

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Solution is (0.5, 4 )

3 0
3 years ago
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