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4 years ago

The differencee of 3 times a number and 18 is 39

Mathematics

1 answer:

Bingel [31]4 years ago

7 0

Answer:

3x-18 = 39

3x = 57

x = 19

(3*(19))-18 = 39

57-18 = 39

3x-x+2=4

Step-by-step explanation:

hope it help

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A map has a scale of 1:25 000.How many kilometres in actual distance is represented by the length 6.8cm on a map?solution

Ghella [55]

Answer:

$= 1.7km$

Step-by-step explanation:

$1 : 25000 \\ 1cm = > 25000cm \\ 6.8cm = > 25000 \times 6.8 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = > 170000cm \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = > 1700m \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = > 1.7km$

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3 years ago

One serving of trail mix has 67 grams of carbohydrates, which is 22% of the recommended daily amount. What is the total recommen

DaniilM [7]

For this case we propose a rule of three:

67 grams -----------> 22%

x grams --------------> 100%

Where:

The variable "x" represents the recommended amount of daily carbohydrates.

So, we have:

$x = \frac {100 * 67} {22}\\x = 304.5455$

Rounding we have the recommended amount, in grams, of carbohydrates: 305 grams

Answer:

305 grams

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3 years ago

Read 2 more answers

Find x for <br> 5x+5+65+65=

Phoenix [80]

5x+5+65+65=

Answer:

x=-27

Step-by-step explanation:

We want to find x right, so everything that does not have x you can move to the other side. 5x=-5-65-65. So that should be your equation so far. Now we know that when there are two negatives it is a negative and you add so -5-65=-70-65=-135. So your equation now should be: 5x=-135. Now we can divide -135 with 5 which gives us... -27! There’s your answer. Hope this was correct!

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3 years ago

Statiscal or non statistical????

Svetach [21]

Answer:I am pretty sure this question is statistical. :)

Step-by-step explanation:

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Taya2010 [7]

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