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kogti [31]
4 years ago
6

Write a rational function that can be used to model the race, where the independent variable represents the average speed in Km/

hour and the dependent variable represents the time in hours it takes to complete the race.
What type of variation function is it?
Mathematics
1 answer:
shutvik [7]4 years ago
8 0

Answer:

T = D / S

Step-by-step explanation:

Distance 'd' = Time 't' x Speed 's'

Ex: If speed= 2km/hr & time taken = 2hrs. So, distance covered = 2x2 = 4km

Hence,  Time 't'  = Distance 'd' / Speed 's'

This is the rational function representing relationship between : dependent (effect) variable - time, & independent (causal) variable - speed.

This is a type of 'inverse or negative relationship' variation function. As, higher speed implies lower time & vice versa.

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Identify each point as a solution of the system or not a solution of the system.
lubasha [3.4K]

Answer:

see below

Step-by-step explanation:

Plot the points on the given graph. The ones that fall in on a solid line at the edge of the doubly-shaded area, or fall in the doubly-shaded area, are part of the solution set.

(0, 4) on the dashed line — not a solution

(-2, 4) on red line in blue area — solution

(0, 5) in doubly-shaded area — solution

(–2, 7) in doubly-shaded area — solution

(–4, 1) in blue area — not a solution

(–1, 1) on red line outside blue area — not a solution

(–1.5, 3.5) in doubly-shaded area — solution

6 0
3 years ago
The exponential function f(x) = 2(4)x increases more quickly than the linear function f(x) = 3x + 4.
Aleksandr [31]
Is this a true/false or do you need an actual mathematical answer?
i will edit my this to answer your question.
I'm just not exactly sure what you are asking :-/
5 0
4 years ago
Not sure need help please​
Roman55 [17]

Answer:

Graph A.

Step-by-step explanation:

When Johnny starts moving <em>more </em>lawns, this means, in fewer weeks, he will have more total lawns mowed. We can see on the first graph, the blue line shows an increase of lawns mowed with fewer weeks.

7 0
3 years ago
Read 2 more answers
What is the value of v? Help, please
9966 [12]

Answer:

v = 87

Step-by-step explanation:

the angle v+39 lies on a straight line. so substract v+39 from 180 to get the interior angle for that side.

afterwards, knowing that the sum of interior angles of a triangle = 180, form an equation with all the angles and solve for v

3 0
3 years ago
How are the properties of segments and angles used to determine their measure?
zavuch27 [327]
You have to be able to know the appropriate properties or postulates to apply on the angles or segments to simplify them. An example would be the Angle Addition Postulate. This postulates states that the sum of the individual measures of the interior angles is equal to the measure of the included angle. There are still a lot more properties to choose from depending on the situation.
5 0
3 years ago
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