42+35+z=180 then input the value of z

Z=103 Degrees

Step-by-step explanation:

42+33=77

180-77=103

Z = 103 degrees

Step-by-step explanation: A triangle sums up to 180 degrees and 42 plus 35 is 77 so 180 - 77 = 103

Good Luck :)

option (a)

step-by-step explanation:

step 1:   take 2 number whose product equal to 25..

and sum of those two number are -10

step: 2 for example here if we take 5,5 are the number,,

5*5=25

and

5+5=10

but we need -10

so if we take   -5,-5

so -5*-5=25

and -5+(-5)=-10

s0

come the equation

replace -10x by these number

like -5x -5x+25

take common

x(x-5)-5(x-5)=0

(x-5)(x-5)=0