Answer:
a +2b
Step-by-step explanation:
2(a + 2b) - a - 2b
Distribute
2a +4b -a -2b
Combine like terms
2a -a + 4b-2b
a +2b
okay so you would first turn everything into fractions 2 3/4= 11/4 + 5/6
next you would change the denominators so they match 11/4 x 6 = 66/24
5/6 x 4 = 20/24
so then you would add 66/24 + 20/24 = 88/24 = 11/3
11/3 is your answer
hope this helps!
Answer:
35
Step-by-step explanation:
Here we see 5 black keys for every 7 white keys.
So the ratio is 5:7
If we need 49 white keys, find the amount we scale the original ratio by:
49/7 = 7
So we are scaling by a factor of 7.
The number of black keys would be 5 * the scale of 7. = 35
So there should be 35 black keys.
Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identities
• tan x = 
• sec x = 
, csc x = 
Consider the left side with x = Θ
=
= 
× 
= 
= ×
= secxcscx = right side ⇒ verified
Answer: 16 units
Step-by-step explanation:
