Answer:
4x + 2y
Step-by-step explanation:
We multiply the price of 1 pencil by 4 to get price of 4 pencils plus the price of 1 rubber times 2.
please mark brainliest
Answer:
Identity (a) can be re-written as

which we already proven in another question, while for idenity (b)

step A is simply expressing each function in terms of sine and cosine.
step B is adding the terms on the LHS while multiplying the one on RHS.
step C is replacing the term on the numerator with the equivalent from the pithagorean identity 
The value of "z" equals 8
Answer:
8 x 2.48 = 19.84
Step-by-step explanation:
We need to find the product for the expression 8 x 2.48.
First no is 8 and second no is 2.48
Product means to multiply.
We can write 2.48 as 
i.e.

Now, apply decimal after 9. So,
8 x 2.48 = 19.84
Hence, the correct option is (b).