let the goldfish be x and the guppies be y
4x + 3y = 29...equ(1)
3x + 5y = 30...equ(2)
multiplying equation 1 by 5 and equation 2 by 3
20x + 15y = 145...equ(1)
9x + 15y = 90...equ(2)
subtracting equation 2 from 1
11x = 55
∴x = 5
substituting the value of x into equation
4(5) + 3y = 29
20 + 3y = 29
3y = 9
∴y =3
Answer:
Step-by-step explanation:
(x , y) = (1 , 5)
Now substitute into the eqn.
y = x + 1
5 = 4 + 1
=> This is correct
=> Therefore, it is on the line
Answer:
3mph
Step-by-step explanation:
notice that for every 1 hr, 3 miles is been travelled
Answer: it is 85 degrees
Step-by-step explanation:
3 small ones and 3 big ones because 3*7=21 plus 10*3=20 =51
