I)x-1 by 4=3
ii)3x+6 by 2=3 by 2
iii)3x-1by5=2x+3by7

i) x = 13

ii) x = -1

iii) x = 2

Explanation:

Given the following expressions, we are to find the corresponding value of x.

1) x-1 by 4=3

x-1/4=3

Cross multiply

x-1 = 4*3

x-1 = 12

x = 12+1

x = 13

2) Given 3x+6 by 2 = 3 by 2

3x+6/2=3/2

Cross multiply

2(3x+6) = 2(3)

2(3x) + 2(6) = 6

6x + 12 = 6

6x = 6-12

6x = -6

x = -6/6

x = -1

3) 3x-1by5=2x+3by7

This can also be written as:

(3x-1)/5 = (2x+3)/7

Cross multiply

7(3x-1) = 5(2x+3)

Open the bracket

7(3x) - 7(1) = 5(2x) + 5(3)

21x - 7 = 10x + 15

Collect like terms

21x - 10x = 15 + 7

11x = 22

x = 22/11

x = 2

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.

where’s the list ? the question is incomplete