The numbers are 15 and 105.
Lin thought a two digit number that is 15, if we multiply 15 with 7 , 15 x 7 = 105 that is we get Jen's number.
and if we put 0 between the two digits of Lin's number, we also get Jen's number;
that is 105.
To solve 2/3 of 12 we need to divide 12 by 3 which is 4 so then we need to do 4 x 2 which is 8. Hope I helped.
The missing angles are the one with labels 1, 2, 3, 4.
180 = 43 + 69 + X
180 = 112 + X
X = 68 (1)
180 = 112 + 41 + Y
180 = 153 + Y
Y = 27 (2)
180 = 44 + 66 + Z
180 = 110 + Z
Z = 70 (3)
180 = 109 + 29 + Z
180 = 138 + Z
Z = 42 (4)
Call the number of courses ' C '.
Whatever it is, it will cost her [ 55 + 450C ].
How many courses can she get for $1,200 ?
55 + 450C = 1200
Subtract 55 from each side:
450C = 1145
Divide each side by 450 :
C = 1145 / 450 = 2.544...
She can only register for a whole number of courses, so<u> 2 </u>is the limit.
That will cost her (55 + 2x450) = (55 + 900) = $955
and she'll have $245 left over ... not enough for another course.
