Answer:
$100
Step-by-step explanation:
20%+30% = 50% off
50/100 = 1/2
200*1/2 = $100
Answer: DC = 4
Step-by-step explanation: Because it is going 1 subtract everytime
Answer:
(32,92) and (−1,2)
Step-by-step explanation:
You have to equal the two Ys, meaning their values as well or you can find the value of the first x and then plug it in the second equation. There are many ways to solve this to.
Step-by-step explanation:
Step 1: From the given equation, taking the Left Hand Side (LHS) of the equation
Step 2: Simplify the LHS to make it equal to the Right Hand Side (RHS)
LHS = sin^4x - cos^4x = (sin²x)² - (cos²x)²
= (sin²x - cos²x)(sin²x + cos²x)
= sin²x - (1 - sin²x) since sin²x + cos²x = 1
= 2 sin²x - 1
= RHS
Hence proved.
Answer:
The value of x , y is - 2 , 2
Step-by-step explanation:
Given two linear equations as
y = x + 4 .........A
y = - 2 x - 2 ..........B
Now, Solving the equations using substitution method
So, Put the value of y from eq B into eq A
i.e - 2 x - 2 = x + 4
Or, - 2 x - x = 4 + 2
Or, - 3 x = 6
∴ x = 
i.e x = - 2
Now, Putting value of x into eq A
∵ y = x + 4
So, y = - 2 + 4
i.e y = 2
So,The value of x = - 2 , The value of y = 2
Hence, The value of x , y is - 2 , 2 Answer
