Answer:
39
Step-by-step explanation:
Let a and b represent the first and second digits, respectively.
... a = b -6 . . . . . . the first digit is 6 less than the second
... a + b = 12 . . . . .the sum of digits is 12 (an even number)
Using the expression in the first equation, we can substitute for a in the second equation:
... (b -6) +b = 12
... 2b = 18 . . . . . . add 6, simplify
... b = 9 . . . . . . . . .divide by 2
... a = 9 -6 = 3 . . . . from the first equation
The number is 39.
Answer:
d
Step-by-step explanation:
A linear pair sum to 180° , then
x - 13 + x + 7 = 180
2x - 6 = 180 ( add 6 to both sides )
2x = 186 ( divide both sides by 2 )
x = 93 → d
Answer:
Im stuck here too
Step-by-step explanation:
Answer:
y = 90
Step-by-step explanation:
<em>Step</em><em> </em><em>1</em>.
y ÷ 9 = 10
<em>Step</em><em> </em><em>2</em>.
Let's multiply by 9:
( ÷ 9 × 9 = 0 )
( 10 × 9 = 90 )
<em>Step</em><em> </em><em>3</em><em>.</em>
y = 90