Answer:
take a picture and ill be able to help you
Step-by-step explanation:
Answer:

Step-by-step explanation:
1) Rewrite x² - 9 in the form a² - b² where, a = x and b = 3.

2) use difference of squares: a² - b² = ( a + b ) (a - b).

3) Factor out the common term x.

4) Cancle out x - 3 .

5) Simplify.

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375mg
I don’t know for certain, but you can try it, I guess.
First, you must distribute the negative sign(otherwise considered a negative one). This gives you x - 4x + 7 = 5x - x - 21.
Then, simplify any like terms you can: -3x + 7 = 4x - 21.
Simplify this even further: 28 = 7x
The final answer is x = 4
Answer:
75-33=42
Step-by-step explanation:
total (75) minus what she already owns (33) leaves you with how much she still needs since they're each a dollar