Answer:
x=21
Step-by-step explanation:
Following the vertical angles, we can assume that the equation that has x and 87 are equal to each other. From then, you set them equal to each other and solve for x.
87=4x+3
84=4x subtract 3 from both sides
21=x divide by 4 to get the x alone on both sides
Answer:
answer is 7x add the this number
Answer:
Step-by-step explanation:
We have to find the value of x from the given equation.
- x²-4=0 is a quadratic equation, so it will have two values.
Step: Write the equation in simplest form.
Step: Solve the problem by spiltting method.
Step: Solve the problem with using algebraic formula.
- x² - 2² = 0
- (x - 2)(x + 2) = 0
Step : We have used a²-b² to solve the problem.
- (x - 2)(x + 2) = 0
- (x - 2)(x + 2) = 0
- (x - 2)=0 or (x + 2) = 0
- x = 2 & - 2
Therefore, the possible values of x are 2 & - 2.
Answer:
a) 8
b) 27
c) x+7
d) 5
Step-by-step explanation:
For a and b your are just adding 7
For c you are just writing the algebraic equation
For d you are just subtracting 7
Hope this helps!:)
