Answer:
Let x= the ones digit
Then x+5=the tens digit
Hence the equation is: 10(x+5)+x=x+5+x+63
10(x+5)+x=x+5+x+63
10x+50+x=2x+68
11x+50=2x+68
-2x-50 -2x-50
---------------------
9x=18 Divide both sides of the equation by 9
x=2
Hence the number is 10(2+5)+2=10(7)+2=70+2=72.
Answer:
Option A is correct
Difference of squares identity should be used to prove 49-4 =45
Step-by-step explanation:
Prove that : 49 - 4 = 45
Polynomial identities are just equations that are true, but identities are particularly useful for showing the relationship between two apparently unrelated expressions.
Difference of the squares identity:

Take LHS
49 - 4
We can write 49 as
and 4 as
.
then;

Now, use the difference of square identity;
here a =7 and b = 2

or
= RHS proved!
therefore, the difference of square polynomial identity should be used to prove that 49-4 =45
Answer:
36ft
Step-by-step explanation:
Answer:
2x+4y=13x-5y=7
Too Many Equal Signs
............... V
2x+4y=13x-5y=7
Program Execution Terminated
Tiger was not able to solve for your input:2x+4y=13x-5y=7
Submit your own solution!Step-by-step explanation:
Answer:
20 cm
Step-by-step explanation:
just a guess since there isn't a pic