Step-by-step explanation:
sum of all angles in a triangle is 180 degrees
x + 3x + 13 + x - 8 = 180
5x + 5 = 180
5x = 175
x = 37°
A = 3x + 13
3(37) + 13
A = 124°
Answer:
1
Step-by-step explanation:
66 pages in 66 seconds. 66/66 = 1
Answer:
a > - 9
Step-by-step explanation:
Given
a + 6 > 0 ( subtract 6 from both sides )
a > - 6
Multiply both sides by 3 to clear the fraction
2a > - 18 ( divide both sides by 2 )
a > - 9
Multiples of 3 plus 1 remainder are:
3n+1
Multiples of 4 plus 1 remainder are:
4n+1
Since these multiples must be the same number must be a multiple of 12 plus a remainder of one, which is:
12n+1
And the smallest such three digit number is:
12n+1>99 subtract 1 from both sides
12n>98 divide both sides by 12
n>8.17
Since n must be an integer, n=9
So then number is 12n+1
12(9)+1=109