Question

Please, Give me answer quickly.​

Answer 1

Answer:

i) 6/40

ii) 27/24

Step-by-step explanation:

For multiplacation you just times the numerators and denominators

Answer 2

${ \large \blue{ \mathbb \fcolorbox{aqua}{darkblue}{Answer:}}}$

Question 1:

$i) \: \bold {\frac{2}{5} \times \frac{3}{2} }$

$= \bold{ \cancel{\frac{6}{10} }}$

$= \bold{ \frac{3}{5} }$

Therefore, The answer is 3/5.

$ii) \: \bold{x - 3 = 5 }$

$= > \bold{x = 5 + 3}$

$= > \bold{x = 8}$

Therefore, The answer is 8.

$iii) \: \bold{ \frac{9}{5} \times \frac{3}{2} }$

$= \bold{ \frac{27}{10} }$

$= \bold{2.7}$

Therefore, The answer is 2.7

$iv) \: \bold{\frac{5x}{3} = 25}$

$= > \bold{5x = 25 \times 3}$

$= > \bold{x = \cancel{\frac{75}{5} }}$

$= > \bold{x = 15}$

Therefore, The answer is 15.

Question 2:

I) Area of the rectangle: length×breadth

ii) Perimeter of the square: 4×side

iii) Area of circle: πr²

iv) Perimeter of triangle: a+b+c

Question 3:

• Formula used:

• Perimeter of equilateral triangle: 3×side

※Solution:

Given,

Perimeter= 36cm

$\bold{Side= \frac{Perimeter}{3} }$

$= > \bold{Side= \frac{36}{3} }$

$= > \bold{Side=12cm}$

Therefore, The answer is 12cm.

Question 4:

$= \bold{(51 {)}^{2} - ( {49)}^{2} }$

$= \bold{(51 + 49)(51 - 49)}$

$= \bold{100 \times 2}$

$= \bold{200}$

Therefore, The answer is 200.

Question 5:

(4abc - 3ab + 8bc) + (abc + bc - 6ab)

= 4abc-3ab+8bc+abc+bc-6ab

= 4abc+abc-3ab-6ab+8bc+bc

= 5abc-9ab+9bc

Therefore, The answer is 5abc-9ab+9bc.

Question 6:

(3x²-2xy+9y³)-(x²+2xy+5y³)

= 3x²-2xy+9y³-x²-2xy-5y³

= 3x²-x²-2xy-2xy+9y³-5y³

= 2x²-4xy+4y³

Therefore, The answer is 2x²-4xy+4y³.