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: 7 cm
Step-by-step explanation:
We know that, Triangle's area= 0.5 × Base × Height
So,
28 = 0.5 × 8 × Height
⇒Height= {28/(0.5 ×8)} = 7 cm
Answer is A.Rational number
For indicies, the numerator is the normal power, and the denominator is a root as such. So 1/2 would be square root, 1/3 would be cube root, 1/4 would be 4th root and so on.
So, 64^(1/3) is the third root of 64, which is equal to 4.
