MATHSFind the measure of each interior angle of a regular.a. Pentagon

1.	MATHSFind the measure of each interior angle of a regular.a. Pentagon Hexagon c Octagon d. polygon of 12 sides2) The sum of two digit of two digit number is 12. If the new number formed by reversingthe digits as greater than the original number by 54 find the original number3) Sale (4-30 +2mm\| Simplifi: 144 x 169 (m) 15.21 x 16,975Factorise the following expressions(i) 16z+20z³(ii) 4a²+4ab-4ac.
Answer» ANSWER: -60 Step-by-step EXPLANATION: let the digit at TEN's place be a and at one's place be b. Original no.=10a+b On reversing the DIGITS, New no.=10b+a According to question, New no.+54=Original no. 10b+a+54=10a+b 54=10a+b-10b-a 54=9a-9b 54=-9(a+b) 54/-9=a+b -6=a+b Original no.= 10a+b =10(-6) =-60

MATHSFind the measure of each interior angle of a regular.a. Pentagon Hexagon c Octagon d. polygon of 12 sides2) The sum of two digit of two digit number is 12. If the new number formed by reversingthe digits as greater than the original number by 54 find the original number3) Sale (4-30 +2mm| Simplifi: 144 x 169 (m) 15.21 x 16,975Factorise the following expressions(i) 16z+20z³(ii) 4a²+4ab-4ac.

Answer»

ANSWER: -60

Step-by-step EXPLANATION: let the digit at TEN's place be a and at one's place be b.

Original no.=10a+b

On reversing the DIGITS,

New no.=10b+a

According to question,

New no.+54=Original no.

10b+a+54=10a+b

54=10a+b-10b-a

54=9a-9b

54=-9(a+b)

54/-9=a+b

-6=a+b

Original no.= 10a+b

=10(-6)

=-60

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