answer
10
step-by-step explanation
the equation given is sin(x) = cos(y) with x = 2k + 3 and y = 6k + 7
substitute in 2k+ 3 for x in sin(x) and substitute in 6k + 7 for y in cos(y)
sin(x) = cos(y)
sin(2k + 3) = cos(6k + 7)
we know that sin(x) = cos(90 -x)
sin(2k + 3)
= cos(90 - (2k + 3) )
= cos(90 - 2k - 3)
= cos(87 - 2k)
substitute this into the equation sin(2k + 3) = cos(6k + 7)
sin(2k + 3) = cos(6k + 7)
cos(87 - 2k) = cos(6k + 7)
87 - 2k = 6k +7
80 = 8k
k = 10
Answer: A. 673.50
Step-by-step explanation:
Product means to multiply.
Multiply the first 2 numbers , then multiply the answer of that to the 3rd number:
5 * -3 = -15
-15 * -2 = 30
The answer is 30
Answer:
−15000
Step-by-step explanation:
Solution:
15×(-25) = -375
(-4)×(-10)= -40
-375×-40= -15000
