Keela can read 2/7 of a book in 3/4 of an hour. how long will it take her to read one full book

2 hours and 37.5 mins

I think

Step-by-step explanation:

2/7 : 3/4

divide both sides by 2

1/7 : 3/8

multiply both sides by 7

1 : 21/8

simplify

1 : 2 5/8

change 2 5/8 to hours and mins

2 hours and 37.5 mins

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.

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