Answer:
Step-by-step explanation:
1/2n + 3 < 5
=> n + 3 < 5 *2/1
=> n < 5 * 2/1 - 3
=> n < 7
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Answer:
13 and 9 (smaller number)
Step-by-step explanation:
13-9=4 <--- difference
13+9=22 <--- sum
Ok heres an example
5÷50
first you say to yourself what times what is 5 then you know 1x5=5 so in the = you put 1 for now. then you see what times 5 is 0 its 0×5. then you subtract 0-0 and it gives you 0. then in the = sign you have =5 then you add a 0 wich makes =50 so 50 is the anwer
Answer:
feldspar, because it has a higher number then gypsum and apatite, and it can be scratched by quartz because it has a lower number.
The integer number that represents the changing in his account balance from beginning to end is of -20.
<h3>Which numbers belong to the set of integer numbers?</h3>
Non-decimal numbers, either positive or negative numbers, also zero, belong to the set, which can be represented by:
Z = {..., -3, -2, -1, 0, 1, 2, 3, ...}
A change can be represented by the <u>final value subtracted by the initial value</u>. For this problem, we have that:
- The initial balance is of $20.
- The final balance is of $0.
Hence the change in the balance is:
0 - 20 = -20.
And the integer is -20.
More can be learned about integer numbers are brainly.com/question/17405059
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