What proportion of... help me please

Below in bold.

Step-by-step explanation:

I won't do all these but you should get the idea of how to do them from the following. Be careful with the units if they are given . You must convert both values to the same unit before working out the percentages.

a. What proportion of 15 is 5:

As a fraction it is 5/15 = 1/3.

Now convert to a percentage by multiplying by 100:

1/3 * 100 = 33.33%

b.  20 and 10

= 10/20 = 1/2

1/2 * 100 = 50%.

e.  £30  and £12

= 12/30

= 2/5

= 2/5 * 100 = 40%.

h. 6.4 is 0.4

= 0.4 / 6.4

= 4/64

= 1/16

= 1/16 * 100 = 6.25%

i. £144 is 12p

Here we convert the 2 values to pence:

£144 = 144 * 100 = 14,400p

The fraction is 12/14,400

= 1/1200

= 1/1200  * 100 = 0.083%

j. 1.2 m is 30 cm

Convert 1.2 m to cm

= 1.2 * 100 = 120

The fraction is 30/120 = 1/4

= 1/4  100 = 25%.

g = (2, 2)

step-by-step explanation:

given the ratio is 1 : 1 then f is the midpoint of eg

let the coordinates of g = (x, y)

using the midpoint formula

(0 + x) = 1 ( multiply both sides by 2 )

0 + x = 2 ⇒ x = 2

similarly

(4 + y) = 3 ( multiply both sides by 2 )

4 + y = 6 ( subtract 4 from both sides )

y = 2

coordinates of g = (2, 2)

positive

step-by-step explanation:

the quadrant is facing upwards