Answer: 
Step-by-step explanation:
Given the right triangle in the image, you need to remember the following identity:

Observe the triangle. You can identify that:

Then, knowing these values, you can substitute them into
:

Finally, you have to solve for "x".
Therefore, the value of "x" rounded to the nearest tenth is:

C, I think
difference(subtract) between 7 times a number(7 multiplied by a unknown number) AND 5(other number to subtractoon is(= to) 51
Answer:
I think its C
Step-by-step explanation:
Answer:
B. $63.19
Step-by-step explanation:
You will pay $63.19 for a item with original price of $78.99 when discounted 20%. In this example, if you buy an item at $78.99 with 20% discount, you will pay 78.99 - 15.798 = 63.19 dollars.