Complete Question:
Find the coordinates of the point after the described reflection. Give the distance between the point and its reflection. R(-5, 8) is reflected across the x-axis _____________.
Answer:
The distance is 16 units
Step-by-step explanation:
Given
Solving (a): Reflection across x-axis
The rule is:
So, the reflection of is:
Solving (b): The distance between R and R'
Distance (d) is calculated as:
Where:
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This gives:
<em>The distance is 16 units</em>
Answer:
36
Step-by-step explanation:
Given
m² - 2mn + n² , substitute values
= (- 2)² - 2(- 2)(4) + 4²
= 4 - 2(- 8) + 16
= 4 + 16 + 16
= 36
<span> C.<span>No, because each lime will cost a bit more than 30¢, so 4 limes will cost a bit more than $1.20.</span></span>
Answer: (B) 8 cm
Step-by-step explanation:
A triangle has 3 sides.
In order for it to be a triangle, the sum of sides a and b must be greater than the length of side c.
Testing (A) 7cm:
7 + 9 > 16
16 > 16
False
Testing (B) 8cm:
8+9 > 16
17 > 16
True
Testing (C) 25cm:
9 + 16 > 25
25 > 25
False
Testing (D) 26cm:
9 + 16 > 26
25 > 26
False