8xy^2 - 3xy^2 = 5xy^2
7xy^2 - 2xy^2 = 5xy^2
We know that
the distance formula is
d=√[(y2-y1)²+(x2-x1)²]
point (0,0) and point <span>(–2, –4)
</span>d=√[(-4-0)²+(-2-0)²]---------> d=√[16+4]-------> d=√20
d=4.47 units
the answer is the option B
see the attached figure
3x - 50 = -20
Add 50 to both sides
3x = 30
x = 10
The number is 10
15 more. There are 3 guppies and 18 goldfish. Because 3+18=21 and 3x6=18