The sides that were once 8 would be 4 and the sides that were once 6 would be 3
20 books per box and x number of boxes.
To write an equation you have to figure out what variable you are solving for, which is x. Then you see what x is, which is the number of boxes. Finally you figure out what it takes from the given no. to get to the answer, x.
y = no. of books
x = y/20
Answer:
The first one.
Step-by-step explanation:
so 1 stands for x and -5 stands for y. When you plug in 1 into the equation the answer is -5. So that order pair works with that equation.
15/x = 40/100. Cross multiply to get 1500 = 40x. Divide by 40 on both because you want to isolate the variable. The idem would originally cost $37.50. To check your answer you would substitute your equation and get 15/37.5 = 40/100. Just so you know a decimal can be in a fraction. Cross multiply to get 1500 = 1500. <span />
we assign x as the upright side of the right triangle, 1 as the hypotenuse. in this case, the horizontal side or the base is square root of (1- x2). arc sin x is equal to theta. tan theta is equal to x / square root of (1- x2). The final answer is x / square root of (1- x2)