Answer:
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Step-by-step explanation:
Answer:
Step-by-step explanation:
How to write numbers in standard form:
Write the first number 8.
Add a decimal point after it: 8.
Now count the number of digits after 8. There are 13 digits.
So, in standard form: 81 900 000 000 000 is 8.19 × 10¹³
200 inches bc 10x10 +10x10 is 200
Write an expression for 213 increased by d: 
X=1/2
Hope this helped! :3
