The diagram shows a pyramid with a square base ABCD. All the sloping edges of the pyramid are 20 cm long and AC = 17 cm.
NOT TO
SCALE
20 cm
С
17 cm
B
Calculate the height of the pyramid.

what is the mean of questions

2nd one in the first row is correct

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950