Answer:
Triangles A & C are right triangles.
Step-by-step explanation:
Triangles A & C are right triangles because they make a 90 degree angle were a pair of legs intersect. That box in the corner of each triangle indicates that the triangle is 90 degrees, therefore a right triangle.
Answer:
45 two digit odd numbers are possible.
Answer:
x = 129
y = 82
Step-by-step explanation:
x + 51 = 180
x = 180 - 51
x = 129
y + 51 + 47 = 180
y = 98 - 180
y = 82
Increasing by 30% results in multiplication by 130/100, or 13/10. Setting the original amount of students to x, we write the equation:
13x/10=182
We multiply by 10 for a result of:
13x=1820
Dividing by 13, we have:
x=140
Thus, 140 students were in the club last year.