Answer:
The correct answer is "".
Step-by-step explanation:
According to the question,
⇒
We know that,
⇒
⇒
∵
Now,
⇒
By putting the value, we get
Solve the equation 3x+4=20
2 answers:
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It's really simple
if a+95=180 you solve for a
a+95=180
-95 -95
a=85
a triangle in total is 180 degrees
now that you know two of the angles find x is really easy
you add 60+85
you get 145
you then subtract 180-145
and get 35 as the answer
x=35
if a+95=180 you solve for a
a+95=180
-95 -95
a=85
a triangle in total is 180 degrees
now that you know two of the angles find x is really easy
you add 60+85
you get 145
you then subtract 180-145
and get 35 as the answer
x=35
Try this solution:
let the unknown two-digits number be 'xy'.
Then it is possible to write any two-digit number as 10x+y, where x - the tens digit and y - the unit digit.
Using the rule described above the phrase 'the tens digit of a number is twice the units digit' may be written as x=2y.
Using the same rule the phrase 'if the digits are reversed, the new number is 36 is less than the original number' may be written as (10x+y)-(10y+x)=36.
These two equations may be resolved as system of two equations:
Check: the original number is 84, the new number is 48; difference is 84-48=36.
answer: 84
let the unknown two-digits number be 'xy'.
Then it is possible to write any two-digit number as 10x+y, where x - the tens digit and y - the unit digit.
Using the rule described above the phrase 'the tens digit of a number is twice the units digit' may be written as x=2y.
Using the same rule the phrase 'if the digits are reversed, the new number is 36 is less than the original number' may be written as (10x+y)-(10y+x)=36.
These two equations may be resolved as system of two equations:
Check: the original number is 84, the new number is 48; difference is 84-48=36.
answer: 84