3 years ago

Find the greatest common factor: 12xy5+ 60x4y2 – 24x3y3

1 answer:

5 0

$12xy^5=12xy^2\cdot y^3\\60x^4y^2=12xy^2\cdot5x^3\\24x^3y^3=12xy^2\cdot2y\\\\therefore\\\\12xy^5+69x^4y^2-24x^3y^3=12xy^2(y^3+5x^3-2y)\\\\Answer:\boxed{D.\ 12xy^2}$

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Seun, Tayo and Dayo are to share N120 in the ratio 4:3:2 respectively. What is the sum of the

Ghella [55]

Seun : Tayo : Dayo
4 : 3 : 2

Total parts = 4 + 3 + 2 = 9

9 parts = N120
1 part = N120 ÷ 9 = N12.33

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Dayo = 2 parts = N12.33 x 2 = N26.67

N53.33 + 26.67 = N80

Answer: N80

6 0

3 years ago

The GCD(a, b) = 9, the LCM(a, b)=378. Find the least possible value of a+b

MAVERICK [17]

$\text{lcm}(a,b)=\dfrac{|a\cdot b|}{\text{gcd}(a,b)}\\\\378=\dfrac{|a\cdot b|}{9}\\\\|a\cdot b|=42\\\\a\cdot b=-42 \vee a\cdot b=42$