12 is the number of $10 bills
20 is the number of $20 bills
<u><em>Step-by-step explanation:</em></u>
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Hello,
<u>Let's note</u>
a the number of $10 bills
b the number of $20 bills
The total value is $520 so we can write the first equation (1)
We know that there are 32 bills in total so we can write the second equation (2)
(1) - 10*(2) gives
10a + 20b - 10(a+b) = 520 - 320 = 200
10a + 20b - 10a - 10b = 10b = 200
So b = 200/10=20
and then from (2) a = 32 - 20 = 12
Hope this helps.
Do not hesitate if you need further explanation.
Thank you
Answer:
A negative number squared is a positive number. Squaring is multiplying a number by its self.
Step-by-step explanation:
X^2 = x * x
Squaring something is just multiplying it by its self.
A negative times a negative = a positive
A positive times a positive = a positive
A negative times a positive = a negative
A positive times a negative = a negative
- * - = +
+ * + = +
- * + = -
+ * - = -
Here is how my 6th grade teacher helped me to remember it:
If something bad (-) happens to a bad guy (-), that is good.
If something good (+) happens to a good guy (+), that is good.
If something bad (-) happens to a good guy (+), that is bad.
If something good (+) happens to a bad guy (-), that is bad.
I hope I helped!
Let me know if you need anything else!
~ Zoe
8x.......................
So you want to know how many times
fits inside
, if so, here's the answer:
First we see that
is equal to <span>4,000,000, and</span>
is equal to 10,000.
Then we divide
, and we get 400, so.
The answer is 400.
Hope this helped! c:
For question 6 the answer is 100 because a quarter of a circle is 90 degrees
