Neither they connect but don’t make a 90 degree angle
Hello,
it's an equilateral triangle, all sides and all angles are the same.
so they are all 4 cm sides.
4 = 2y + 6
-2y = 6 - 4
-2y = 2
y = 2 : 2
y = 1 or -1
Linear functions are given in the form:
y = mx + n
m slope
n y-intercept
Inserting the given values:
-4 = -1m + n
1 = 2m + n
Solve for m and n.
Answer:
x≤7.8 ⇒(-∞;7.8]
x<7.8 ⇒ (-∞;7.8)
x>7.8 ⇒ (7.8; ∞)
x≥7.8 ⇒ [7.8; ∞)
Step-by-step explanation:
Hi, to answer this question we have to analyze each expression:
• x≤7.8
The solution is all the numbers less or equal to 7.8, since it can be equal to 7.8, it includes 7.8 , we have to use closed brackets
(-∞;7.8]
• x<7.8
All the numbers less than 7.8 , it excludes the endpoint , it's an open interval (parenthesis)
(-∞;7.8)
• x>7.8
All the numbers higher than 7.8, open interval (parenthesis)
(7.8; ∞)
• x≥7.8
All the numbers higher or equal to 7.8, closed interval (closed brackets for the endpoint)
[7.8; ∞)
