Answer:
18/4
Step-by-step explanation: in order to get an equivalent ration just multiply both numerator and denominator by the same number
in this case I multiplied by 2 and got 18/4
Answer:

To get the area of the quadrilateral to do see the 4 sides do all four side 7x7x7x7
Answer:
3,25-2,5=0,75 it is equal to 3/4 so D
Answer:about 26
Step-by-step explanation:
30^2-15^2
Square root it 25.98 about 26
Answer:
\left(\frac{\sqrt{78}}{30},\ \frac{\sqrt{78}}{39}\ ,\frac{41\sqrt{78}}{390}\right)