Answer:
x ≥ 5
Step-by-step explanation:
Find the domain by finding where the equation is defined.
Interval Notation:
(5, ∞ )
Set-Builder Notation:
{x | x ≥ 5}
So, the answer is : x ≥ 5
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The line has a slope of 4
Answer:
5 9/14
Step-by-step explanation:
Answer:
64/27
Step-by-step explanation:
(4/3)^3=(4/3)*(4/3)*(4/3)=64/27
<em>Greetings from Brasil...</em>
According to the statement of the question, we can assemble the following system of equation:
X · Y = - 2 i
X + Y = 7 ii
isolating X from i and replacing in ii:
X · Y = - 2
X = - 2/Y
X + Y = 7
(- 2/Y) + Y = 7 <em>multiplying everything by Y</em>
(- 2Y/Y) + Y·Y = 7·Y
- 2 + Y² = 7X <em> rearranging everything</em>
Y² - 7X - 2 = 0 <em>2nd degree equation</em>
Δ = b² - 4·a·c
Δ = (- 7)² - 4·1·(- 2)
Δ = 49 + 8
Δ = 57
X = (- b ± √Δ)/2a
X' = (- (- 7) ± √57)/2·1
X' = (7 + √57)/2
X' = (7 - √57)/2
So, the numbers are:
<h2>
(7 + √57)/2</h2>
and
<h2>
(7 - √57)/2</h2>
