Yes. Rational numbers are numbers that never end. 2.75 ends at the five. Therefore it is rational!
Answer:
csc 2 (csc
= csc 150 = csc 30 = csc 2)
Step-by-step explanation:
csc
is in the 2nd Quadrant where only sin, and csc are positive.
csc ![(\frac{5\pi}{6})=csc (\pi -(\frac{5\pi}{6}))=csc(\frac{5\pi}{6})](https://tex.z-dn.net/?f=%28%5Cfrac%7B5%5Cpi%7D%7B6%7D%29%3Dcsc%20%28%5Cpi%20-%28%5Cfrac%7B5%5Cpi%7D%7B6%7D%29%29%3Dcsc%28%5Cfrac%7B5%5Cpi%7D%7B6%7D%29)
but csc
= ![\frac{1}{sin (\pi/6)} = \frac{1}{sin 30} = \frac{1}{1/2} =2](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7Bsin%20%28%5Cpi%2F6%29%7D%20%3D%20%5Cfrac%7B1%7D%7Bsin%2030%7D%20%3D%20%5Cfrac%7B1%7D%7B1%2F2%7D%20%3D2)
(3/5 + -1/4)/(7/10)
get a common denominator of 20
3/5 * 4/4 =12/20
-1/4 * 5/5 = -5/20
7/10 *2/2 = 17/20
replace
(12/20 - 5/20)/(14/20)
add the top
(7/20)/(14/20)
copy dot flip
7/20 * 20/14
7/14
1/2
The answer would be x=245 cm
Answer:
![5 w^{2}](https://tex.z-dn.net/?f=5%20w%5E%7B2%7D)
Step-by-step explanation:
Step 1: The given expression is
.
Step 2: Let us first know the law of exponents to add two exponents.
The base and the exponents must be the same to add two exponents.
Here base is w and the exponent is 2. They are same.
Step 3: Now add the coefficient of
.
Hence the addition of the expression
.