Jorge bought 3 DVDs, each for the same price, and a set of earphones for a price of $10. The total cost before tax was $49. What
1 answer:
Answer:
The cost of each DVDs is $ 13 .
Step-by-step explanation:
Given as :
The cost of earphones = $ 10
The number of DVDs bought = 3
The total cost of both items before tax = $ 49
Let The cost of each DVDs = $ x
So, According to question
The cost of earphones + The cost of 3 DVDs = $ 49
Or, $ 10 + 3 × x = $ 49
Or, 3 × x = $ 49 - $ 10
Or, 3 × x = $ 39
∴ x =
I.e x = $ 13
Hence The cost of each DVDs is $ 13 . Answer
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Answer:
C. 31.83 feet.
Step-by-step explanation:
We have been given that Trina has $1000 to purchase an open-top cylindrical dog pen in her backyard. She wants the height of the pen to be 5 feet.
First of all, we will find the surface area of dog pen using surface area of cylinder.
,where,
r = Radius of cylinder,
h = Height of cylinder.
Since the area of each square foot of pen costs $1, so in $1000 Trina can cover an area of 1000 square feet.
Now, we will set the surface area of cylinder equal to 1000 to solve for the radius.
Upon dividing both sides of our equation by 10 pi we will get,
Therefore, the radius of the dog pen is 31.83 feet and option C is the correct choice.
The hypotenuse of the right triangle measures 3 units.
<h3>How to find the hypotenuse?</h3>
Here we know that both legs measure:
If we use the Pythagorean theorem, we will see that the hypotenuse H can be written as:
Then we conclude that the hypotenuse of the right triangle measures 9 units.
If you want to learn more about right triangles:
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