D is the answer
Multiply 15 times 30 and divide by 2.25
Let x be the 1st number
x + 9 be the second number
Equation:
x + x+9 = 171
Solution:
2x + 9 = 171
2x = 171 - 9
2x = 162
x = 81
x + 9 = 90
81 + 90 = 171
Since only 2 sides are equal (not 3), this is an "isosceles triangle."
Answer:
found this i think this should help with your question
Step-by-step explanation:
Answer:Perimeter is the measurement all around the shape. So, to do this we wolud need to add this measurments together
Step-by-step explanation:
8.2+3.9=12.1
12.1+4.5=16.6
Answer:16.6cm
