Answer:
r = 6
Step-by-step explanation:
V(cyl) = π · r² · h
144π = π · r² · 4
144 = r² · 4
<u>144</u> = r²
4
r = 
÷ 
r = 12/2
r = 6
Answer: 98
Step-by-step explanation:
Answer:
X = -8 and X = 2
Step-by-step explanation:
X^2 + 6X - 6 = 10
Bring the 10 over:
X^2 + 6x - 16 = 0
From here, either use the quadratic formula or
manual factorization by finding its roots:
Manually:
(X + 8)(X - 2) = 0
Equate each factor to 0 you will get:
X + 8 = 0 and X - 2 = 0
Solutions are -8 and 2 respectively.
The equations intersect at an infinite number of points. Infinite number of solutions.
<h3>What is elimination method?</h3>
According to the description of the elimination approach, it involves removing a phrase that contains any of the variables from the equation in order to simplify the calculations. To achieve this, multiply or divide a number by the equation(s) until all the variable terms' coefficients are the same.
The term is then eliminated or removed from the result by adding or subtracting from both equations. Because of this, the addition method is another name for the elimination approach.
Therefore,
Multiply each equation by the value that makes the coefficients of y opposite.
(6x - 4y = 4) - [2 × (3x - 2y = 1)]
= [(6x - 4y = 4) - (6x - 4y = 2)]
= 0 = 2
Hence, the equations intersect at an infinite number of points. Infinite number of solutions.
To learn more about elimination method, refer to
brainly.com/question/28405823
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