Answer:
56 number of Nectarines are needed
Step-by-step explanation:
Let number of Fruit-pie be x and number of nectarines be y.
Since the fruit pie recipe calls for twice as many peaches as nectarines.
then we have,

It is also given that total of 168 pieces fruit for all pies.
⇒ 
Substitute x=2y in above equation to solve for y:
or
3y=168
Divide both sides by 3, we get

Simplify:
y = 56
Therefore, 56 nectarines are needed.
X+7=12
x=5
x+7=-12
x=-19
hope this helps!
Answer:
y=5x=15
Step-by-step explanation:
y-5=5(x--2)
y-5=5x+10
y=5x+15
Step-by-step explanation:
Lets look at each of the options one by one:
Price System: In this system markets allocate resources through the price mechanism. An increase in demand raises price and encourages businesses to use more resources into the production of that good or service. In this system the government limits itself to protecting property rights of people and businesses using the legal system and protecting the value of money or the value of a currency.
Authoritarian System: In this system it is associated with a communist system. The scarce resources are owned by the government. The state allocates resources, and sets production targets and growth rates according to its own view of people's wants. They have their own idea of demand.
By comparing two systems it can be seen that Price System automatically moves resources to where they are most needed. So, price system is more efficient than authoritarian means.
Answer:
(-1) degrees
Step-by-step explanation:
∵ Temperature drop with the increase in every 1000 ft of height = 2 degrees
∴ Temperature drop in every 1 ft =
degrees
∴ Temperature drop in 29000 ft = 
= 58 degrees
Temperature on ground = 57 degrees
Temperature at 29000 feet = 57 - 58
= -1 degrees
Therefore, temperature at 29000 feet is -1 degrees.