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Must two quantities have the same dimensions when subtracting them?
Yes they must be in the same units of measurements.
Is adding or subtracting two related quantities by the same number is called scaling?
No, it is not.
Why is adding subtracting and equating quantities possible only if they have the same dimension?
If they are not on the same dimension then you cannot do this. They will be different numbers and will not go together.
How are adding fractions different?
When adding or subtracting fractions their denominators must be the same
When adding or subtracting numbers written in scientific notation the exponents must be the?
Same.
Must two quantities have the same dimensions when subtracting them?
Yes they must be in the same units of measurements.
Must two quantities have the same dimensions if you are multiplying them?
No
Must two quantities have the same dimensions?
If you intend 'dimensions' to mean units then whenever the two quantities are to be operated on each other then they must have the 'dimensions', refer to dimensional analysis
Is it true that two quantities having the same dimensions must be measured in the same units?
No, it is not true.
Is adding or subtracting two related quantities by the same number is called scaling?
No, it is not.
Why is adding subtracting and equating quantities possible only if they have the same dimension?
If they are not on the same dimension then you cannot do this. They will be different numbers and will not go together.
Why does efficiency have no dimension?
Efficiency is a ratio of the same quantities. Usually, output power / input power. As the numerator and denominator have the same quantities, the dimensions cancel each other out.
What is adding or subtracting two related quantities by the same number called?
It is called algebra. When two quantities are related as long as you do the same operation to both (add, subtract, multiply, or divide) you do not change the relation
What is the rule for subtracting integers with the same signs?
if the signs are the same you must add its opposite.
If all the terms in an equation have same units then is it necessary that they have same dimensions?
if they have same units they must have same dimensions . but thy can have different units even if they have same dimensions i hope it helps :
What must be true in order to add matrices?
They must have the same dimensions.
When adding or subtracting fractions do you have to have the numerator the same or denominator?
The denominators must be the same, the numerators can be different.
