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Fofino [41]
3 years ago
13

5C%3A%20....." id="TexFormula1" title="convert \: \\ \\ 1km \\ \\ in \: meters \: ....." alt="convert \: \\ \\ 1km \\ \\ in \: meters \: ....." align="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
scZoUnD [109]3 years ago
8 0
1 kilometer = 1000 meters
Anettt [7]3 years ago
4 0

1000m is a required answer.

Answer:

1km=1000metre.

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Casey can buy 3 sandwiches and 5 cups of coffee for $26. Eric can buy 4 sandwiches and 2 cups of coffee for $23. How much does o
dolphi86 [110]
Let's identify what we are looking for in terms of variables.  Sandwiches are s and coffee is c.  Casey buys 3 sandwiches, which is represented then by 3s, and 5 cups of coffee, which is represented by 5c.   Those all put together on one bill comes to 26.  So Casey's equation for his purchases is 3s + 5c = 26.  Eric buys 4 sandwiches, 4s, and 2 cups of coffee, 2c, and his total purchase was 23.  Eric's equation for his purchases then is 4s + 2c = 23.  In order to solve for c, the cost of a cup of coffee, we need to multiply both of those bolded equations by some factor to eliminate the s's.  The coefficients on the s terms are 4 and 3.  4 and 3 both go into 12 evenly, so we will multiply the first bolded equation by 4 and the second one by -3 so the s terms cancel out.  4[3s + 5c = 26] means that 12s + 20c = 104.  Multiplying the second bolded equation by -3:  -3[4s + 2c = 23] means that -12s - 6c = -69.  The s terms cancel because 12s - 12s = 0s.  We are left with a system of equations that just contain one unknown now, which is c, what we are looking to solve for.  20c = 104 and -6c = -69.  Adding those together by the method of elimination (which is what we've been doing all this time), 14c = 35.  That means that c = 2.5 and a cup of coffee is $2.50.  There you go!
8 0
3 years ago
What is a value or values that make an equation true
zhannawk [14.2K]
Any value that satisfies the equality.
E.g. 2x + 4x = 10 the value that makes this true is 2

or 

x^2 = 2 The values that would make it true are 4 and -4, since the squared of any number is always a positive.
7 0
3 years ago
Alec types
erica [24]

Answer:

He can type 4.5/5 of a paragraph

Step-by-step explanation: Because there are 60 seconds in a mintune right. 2/3 of an hour=40 seconds. 1.5/5=20 seconds and 60 seconds=4.5/5

7 0
3 years ago
1*5*665*5665*5545*5665
sergiy2304 [10]

Answer:

thats long just use calcukator

5 0
3 years ago
3 over 18 as a percent please help
Ratling [72]
3/8 as a percentage is 37.5%
3 0
3 years ago
Read 2 more answers
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