Find the coordinates of the midpoint of the segment whose endpoints are given. W (-3,-7) and X (-8,-4)
1 answer:
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Step-by-step explanation:
<h3>to understand the solving steps</h3><h3>you need to know about</h3>- linear equation
- graphing linear equation
- PEMDAS
3x-2y=8
5x-3y=14
<h3>let's solve:</h3>to graph we have to turn the both equation into this form
y=mx+b
let's do
the pictures are attached
Answer:
see explanation
Step-by-step explanation:
Given M is directly proportional to r³ then the equation relating them is
M = kr³ ← k is the constant of proportion
To find k use the condition r = 4 when M = 160, thus
160 = k × 4³ = 64k ( divide both sides by 64 )
2.5 = k
M = 2.5r³ ← equation of proportion
(a)
when r = 2, then
M = 2.5 × 2³ = 2.5 × 8 = 20
(b)
when M = 540 , then
540 = 2.5r³ ( divide both sides by 2.5 )
216 = r³ ( take the cube root of both sides )
= r , thus
r = 6