Acollection of nickels and dimes is worth $9.45. if the number of dimes is doubled, the value is $16.65. find the number of each coin.

Solution-

Hint- A nickel is worth 5 cents and a dime is worth 10 cents.

Suppose x number of nickels and y number of dimes are present.

Worth of nickels = x × 5 =5x cents =

Worth of dimes = y × 10 =10y cents =

Net worth = Worth of nickels + Worth of dimes = $9.45

If the number of dimes is doubled, then

Worth of dimes = 2 × y × 10 =20y cents =

Net worth = Worth of nickels + Worth of dimes = $16.65

Subtracting both the equation,

Putting the value of y in any equation will give the value of x,

the value of x was found to be 45.

∴ Number of nickels are 45 and number of dimes are 72.

the population of other specie of birds will decline or other specie of birds will find some alternate source of food to survive.

explanation:

according to the competitive exclusion principle, which is also known as gause's law, two specie living in the same niche and feeding on the same resource cannot co-exist stably.

as we have well studied the theory of natural selection which states that only those organisms survive which have better tendency to compete for food and adapt to the environmental conditions.

coming towards the question, what wi ll happen when one species outcompetes the other for the small fish , the other specie will not get enough food and will start to die or decline in population. eventually either other specie needs to find another alternative food source for itself or migrate at some other location where there is less competition otherwise it will just not exist anymore at that niche.

hope it !

.95

step-by-step explanation: