Answer:
Option A is correct
Step-by-step explanation:
Given: FH is the altitude to the hypotenuse EG
To find: length of FH
Solution:
According to Pythagoras theorem, square of hypotenuse is equal to sum of squares of other two sides.
In ,
So,
Put EH = 6 units and EF = 7 units
Option A is correct
Take square root on both sides
Answer:
The correct options are 1, 2, 4 and 6.
Step-by-step explanation:
The given expression is
To subtract like term subtract like terms, subtract the coefficients, not the variables.
Therefore option 1 is correct.
Like terms are terms that contain the same variable, raised to the same power. For example: 3xy and 5xy, 4x² and 3x².
Therefore, option 2 is correct.
Using distributive property we get
Only combine terms which contain the same variable.
Therefore option 4 is correct.
The simplified expression is -4x-3y+3z. Therefore option 6 is correct.