Answer:b
Step-by-step explanation:
∠1 + ∠2 = 180°
⇒ 2x + 10x = 180°
⇒ 12x = 180°
⇒ x = 180°/12 = 15°
∠1 = 2x = 2×15° = 30°
Answer:
(2, 24) (6, 72) (9, 108)
Step-by-step explanation:
For this one, we know that 2 chairs use 24 screws, which must mean that for each chair, 12 screws are needed, so we can just multiply 12 by the number of chairs being built (ex. 6) to find out how many screws are needed in total. I hope this helps :)
Answer:
The total cost for Imani books is $675.
Step-by-step explanation:
Given : Imani brought books for college and paid 35% of the total cost her parents paid the remaining balance of 438.75
To find : What was the total cost for Imani books ?
Solution :
Let x be the total cost of the books.
As she paid 35% of the total cost.
i.e. 
Now, the total cost of the book is given by,
Remaining balance= 65% of total cost
i.e. 




Therefore, the total cost for Imani books is $675.
The question is a bit confusing, but I'm assuming you are adding them all up, so the total sum would be 60 items :)