angles BAC and BCA are equal = 69
69 +69 = 138
angles in a triangle =180
180-138 = 42
5x + 2 = 42
5x = 40
x = 8
If Ian uses 1/20 of the ketchup 4 times, this is equal to 4/20, or
.
can be simplified to
, which means we need to work out
of 12.2
is equivalent to 20%, which as a decimal is 0.2
0.2 x 12.2 = 2.44 - however, this is how much he has
used, and we need to figure out how much is left.
12.2 - 2.44 = 9.76
So, Ian has 9.76 oz remaining :)
The slope is m=9 for the points.
According to these numbers, in 2010 the federal debt per capita was $43,888.75. Hope this helps!