Noah has a $20 gift card for an online music store. all songs at the store have the same price. after noah buys 3 songs the balance on the card is $16.25. what will be the ram aiming balance on the card after he buys 5 more songs?

  The remaining balance after he buys 5 more songs is $10.

Step-by-step explanation:

Given : The value of the gift card is $20  .

After Noah buys 3 songs the balance on the card is $16.25.

Here ,

Let x be the cost of one song, then

Value of the gift card - cost of x songs =Balance remaining on card

i.e. cost of each song = $1.25

Now , the remaining balance after he buys 5 more songs = $16.25 - 5(1.25)

= $ 16.25 -6.25

= $10

Hence, the remaining balance after he buys 5 more songs is $10.

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

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 !