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icang [17]
4 years ago
5

According to​ statistics, a person will devote 32 years to sleeping and watching TV. The number of years sleeping will exceed th

e number of years watching TV by 22. Over the​ lifetime, how many years will the person spend on each of these​ activities?
Mathematics
1 answer:
Alik [6]4 years ago
4 0
5 years for Tv and 27 for sleeping. The reason is 5 + 27= 32 and 27-5=22 so it all works out
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4 years ago
Find the distance from point A to the given line.
VMariaS [17]

Answer:

Let's see what to do buddy...

Step-by-step explanation:

_________________________________

Step (1)

To find the distance between the line which formed like :

ax + by + c = 0

and the point which is like :

h =  \binom{m}{n}  \\

we use following equation :

d =  \frac{ |a(m) + b(n) + c| }{ \sqrt{ {a}^{2} +  {b}^{2}  } } \\

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y =  - x + 4

x + y - 4 = 0

So ;

a = 1

b = 1

c =  - 4

°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°

A = ( 2 , - 1 )

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So we have :

d =  \frac{ | \: 1(2) + 1( - 1) - 4| }{ \sqrt{ {1}^{2} +  {1}^{2}  } } =  \\

d =  \frac{ |2 - 1 - 4| }{ \sqrt{1 + 1} } =  \frac{ | - 3| }{ \sqrt{2} }  \\

d =  \frac{3}{ \sqrt{2} } \\

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Thanks for watching buddy good luck.

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5 0
3 years ago
Which set is a function?
sergiy2304 [10]
The correct answer is B. A function is defined as a set of values or points in which each x value is only paired with one value. All the other choices have x values that repeat but no x values in choice B repeat.

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4 0
3 years ago
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Solve the system by using the technique of ‘elimination’: -2x+5y=-42,7x+2y=30
Gekata [30.6K]

Solve the following system using elimination:

{5 y - 2 x = -42 | (equation 1)

7 x + 2 y = 30 | (equation 2)

Swap equation 1 with equation 2:

{7 x + 2 y = 30 | (equation 1)

-(2 x) + 5 y = -42 | (equation 2)

Add 2/7 × (equation 1) to equation 2:

{7 x + 2 y = 30 | (equation 1)

0 x+(39 y)/7 = (-234)/7 | (equation 2)

Multiply equation 2 by 7/39:

{7 x + 2 y = 30 | (equation 1)

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Divide equation 1 by 7:

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Collect results:

Answer: {x = 6, y = -6

3 0
4 years ago
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