Pls explain this in a easy way so my teacher ain’t sus

Binh is correct

Step-by-step explanation:

This because when multiplying any number by 10^2 it just means that's how many times the decmial point is moving. In this case when multiply by 10^2 the decimal only moves twice so when you multiply 10^2 by 0.4 the decimal moves twice which eqauls 40.

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

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk