Answer:
$1.09
Step-by-step explanation:
Henry: 16 increase 9% =
16 × (1 + 9%) = 16 × (1 + 0.09) = 17.44
Ella: 17 increase 9% =
17 × (1 + 9%) = 17 × (1 + 0.09) = 18.53
Difference: 18.53 - 17.44 = 1.09
Answer:
8 hours long
Step-by-step explanation:
3/4 of the race in 6 hrs
6 divided by 3 equals 2
so 1/4 is 2 hrs, 2/4 is 4 hrs, 3/4 is 6 hrs which means 4/4 the whole race would be 8 hrs
4 multiplied by 2 would give you 8
so the entire race was (8 hours long)
It is given that z varies directly with x and inversely with the square of y so it follows:

It is also given that z=18 when x=6 and y=2 so it follows:

So the equation of variation becomes:

Therefore the value of z when x=7 and y=7 is given by:

Hence the value of z is 12/7 or 1.7143.
The sum of the first five terms of the geometric sequence is -1555
<h3>Sum of geometric sequence</h3>
The formula for calculating the sum of geometric sequence is expressed as:

where
r is the common ratio = 6/1 = 6
a is the first term = -1
n = 5 (number of terms)
Substitute

Hence the sum of the first five terms of the geometric sequence is -1555
Learn more on sum of sequence here; brainly.com/question/2142410
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