Answer:
The expression for the total cost is x = 19.99 + 0.99n .
Step-by-step explanation:
Let us assume that the total cost be x.
As given
Sophia pays $19.99 membership fee for an online music store.
If sophia purchases n songs for $0.99 each .
Than the expression becomes
Total cost = Membership fee + Cost of n songs
x = 19.99 + 0.99n
Here n represented the number of songs.
Answer:
no solution
Step-by-step explanation:
hello
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this is always false so there is no solution
Answer:
Any angle less than or greater than 90°
Explanation:
Rectangles and squares only contain 90° angles.
The two numbers are x and y; therefore we can suggest this system of equations:
x+y=150
x/y=3/2
We can solve this system of equations by substitution method.
x/y=3/2 ⇒x=3y/2
(3y/2)+y=150
3y/2 + y=150
lowest common multiple=2
3y+2y=300
5y=300
y=300/5
y=60
x=3y/2
x=(3*60)/2=180/2=90
Answer: the bigger number is 90
Answer:
You are correct, it is the first one.
Step-by-step explanation:
Biotic factors include animals, plants, fungi, bacteria, and protists. Some examples of abiotic factors are water, soil, air, sunlight, temperature, and minerals.