Answer:
Step-by-step explanation:
Let
x------> the number of books
we know that
The linear equation that represent this situation is equal to
solve for x
Divide by 
both sides
The triangles are similar. Set the two triangle's measurements equal to each other
8/10 = (x - 1)/(x + 2)
Cross multiply
8(x+ 2) = 10(x - 1)
Distribute the numbers
8(x) = 8x
8(2) = 16
10(x) = 10x
10(-1) = -10
8x + 16 = 10x - 10
Isolate the x. Subtract 16 from both sides, and 10x from both sides
8x (-10x) + 16 (-16) = 10x (-10x) - 10 (-16)
8x - 10x = -10 - 16
Simplify. Combine like terms
-2x = -26
Isolate the x. Divide -2 from both sides
-2x/-2 = -26/-2
x = -26/-2
x = 13
13 is your answer for x
hope this helps
Answer:
2 1/3 cm
Step-by-step explanation:
Area = length x width
w = width
7/3 = 6/5w
cross-multiply: 30w = 70
w = 7/3 or 2 1/3
Answer:
7/12 or 0.583333333333...
Step-by-step explanation:
calculator
Answer:
8000
Step-by-step explanation:
I did a simple way, I divided 4800 by 3 and got 1600, then multiplied 1600 by 5. Because 2x5 =10 (or 100%)
