A= 1.142 m/hr
Width of beach at 8 p.m. = 36 m
Width of beach at 3 a.m. = (36-8) m =28 m
Average change in width(A) = change in width (Width of beach at 8 p.m.-Width of beach at 3 a.m.0/ time in hours
A= ( 36-28)/ 7
A= 8/7 m/hr
A = 1.142 m /hr
Answer:8x-5y
Step-by-step explanation:
(3x-4y)-(-5x+y)
Remove brackets
3x-4y+5x-y
Collect like terms
3x+5x-4y-y
8x-5y
Answer:
$55
Step-by-step explanation:
Given data
Principal = $50
Rate= 10%
Time = 1 year
The simple interest formula is given as
A= P(1+rt)
substitute
A= 50(1+0.1*1)
A= 50(1.1)
A= $55
Hence the balance in her account will be $55
Answer:
9 roots
Step-by-step explanation:
(x+10)^9 = 0
If you would multiply it out, the highest power is x^9 so the equation has 9 roots
Solving (x+10)^9 =0
Taking the 9th root of each sdie
x+10 = 0
x = -10
The root is -10 with multiplicity of 9
