Answer: let the no of paperback books be x and hardcover books be y
4y - x = 3
Therefore, x - 4y = -3 -----(1)
x + y = 447 ----(2)
Put x = 447 - y in eqn 1
447- y - 4y = -3
-5y = -3 - 447
-5y = -450
y = 90
x = 357
Step-by-step explanation:
Answer:
a ratio is a fraction. For example the ratio 3 pigs to 9 animals can be written as 3:9 which can be written as a fraction; 3/9 which can be simplified by dividing the whole thing by three (Because that is the greatest common factor) and you would get 1/3.
Step-by-step explanation:
39. 8 -0.7 are multiplied together so the answer is
(-0.7)^8
= 0.05765 to nearest 100 thousandth. ( using a calculator).
40. 10^4 + 0^12 = 10,000 + 0
= 10,000
The answer is really 16% becouse if you devide $5,000 by .16 you get $800
EXPLANATION
Let's see the facts:
If the input is x= -5 the equation is:
k = 6*(-5) + 100
Multiplying terms:
k = -30 + 100
Adding terms:
k = 70
The answer is k=70
