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sergey [27]
2 years ago
7

If a train leaves its destination at 23:07 and arrives at 07:42 the next morning, how long does the journey take?

Mathematics
1 answer:
Art [367]2 years ago
7 0
The answer would be  8 hours and 35 minutes
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Use the Fundamental Counting Principle to find the total number of possible outcomes.
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4 0
3 years ago
Solve px-18=4 for x ​
sashaice [31]

Answer:

x=22/p

Step-by-step explanation:

1. Add 18 to 4

2. px=22

3. Divide by p to isolate x

4. 22/p=x

4 0
2 years ago
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Paul has 2/3 as many postcards as shawn . the number of postcards shawn has is 3/5 of the number of postcards tim has. if the th
kakasveta [241]
P = ( 2 / 3 )s;
s = ( 3 / 5 )t ;
p + s + t = 280 ;
Then, p =( 2 / 3 )( 3 / 5 )t ;
p = ( 2 / 5 )t;
We solve the equation : ( 2 / 5 )t + ( 3 / 5 )t + t = 280 ;
( 2 / 5 )t + ( 3 / 5 )t + ( 5 / 5 )t = ( 1400 / 5 )t;
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t = 1400 ÷ 10 ;
t = 140 postcards has Tim;
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s = ( 3 / 5 ) × 140 = 84 postcards has Shawn ;
6 0
3 years ago
shut up bought a pen on sale. she saved 17% of the original price of $29. about how much money did she save? a $1 b $5 c $10 or
vredina [299]

Answer:

$4.93 cents so round it to $5.00

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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nirvana33 [79]

Answer:

Step-by-step explanation:

Correlation measures the strength of the linear relationship between two variables.

A linear relationship exists between two variables if one variable increases as the other increases or decreases.

Use the formula for correlation coefficient to determine the strength of the relationship.

Correlation coefficient, r is equal to the sum of squares of xy divided by the product of the square root of the sum of squares of xx and xy.

The sample correlation coefficient r measures the strength of the linear relationship and has the following properties:  

-1≤r≤1; the closer the value is to −1 or 1, the stronger the linear relationship  

– If r is negative, this indicates that as one variable is increasing, the other is decreasing  

– If r is positive, this indicates that both variables are increasing or both variables are decreasing  

If r = 0, then there is no linear relationship between the two variables  

5 0
2 years ago
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