1. thats because in the alphabet where a=1 and b=2 and c=3, A=1
Answer : The two correct options are,
3.4a + 5.6b
5.6b + 3.4a
Step-by-step explanation :
The given expression is:
(-2.4a - 1.8b) - (-3.8a - 4.4b) + (2.0a + 3.0b)
First we have to open the brackets.
⇒ -2.4a - 1.8b + 3.8a + 4.4b +2.0a + 3.0b
Now keep like terms together.
⇒ -2.4a + 3.8a +2.0a + 3.0b - 1.8b + 4.4b
By subtraction or addition, we get:
⇒ 3.4a + 5.6b
or,
⇒ 5.6b + 3.4a
Hence, the expressions that equivalent to the given expression are, 3.4a + 5.6b and 5.6b + 3.4a
Answer: Reflection, then rotation.
Step-by-step explanation:
It's the first one because it is reflected as you can see and the it rotates the other way.
15, 7, 24, 10. If it is 2 tables for every 6 guests, then it is 1 for every three. All you have to do is multiply the table number by 3 to get the number of guests, and you need to divide the guest number by 3 to get the table number.
Answer:
C. 3.33 moles
Step-by-step explanation:
Ammonia decomposes
We have to find the moles of hydrogen formed in 2.22 moles of ammonia.
From the reaction
2 moles of ammonia gives 3 moles of hydrogen
1 mole of ammonia produce hydrogen=3/2 moles
2.22 moles of ammonia produces hydrogen=
moles
Number of moles of hydrogen formed by decomposition of 2.22 moles of ammonia
=
moles
Hence, 3.33 moles of hydrogen are formed in 2.22 moles of ammonia.
Option C is true.
C. 3.33 moles
