Answer question 13 PLS

Step-by-step explanation:

By Exterior Angle Theorem,

(x + 40)° + (4x - 5)° = (6x + 20)°

Therefore 5x + 35 = 6x + 20 and x = 15.

Hence angle QPT = (6 * 15 + 20)° = 110°.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies