Cannot work out part a and b (ii)!
a) The ratio 2.5 metres to 60 centimetres can be written in the form 1:n. Find the value of n.

b) ii) Find the rate at which the water is now flowing from the tap. Give your answer in cubic centimetres per second (cm^3/s).

a)n = 24

b) 100 cm^3/s

Step-by-step explanation:

1/n = 2.5/60

n = 24

b) assuming you are not in calculus, the rate of the water will be constant k.

k = 4000/40 = 100 cm^3/s

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752