[IMAGE] is this linear or not and why? if it is what’s the equation?

Ronnie is scheduling a chess tournament in which each player plays every other player once. He created a table and found that ea

aalyn [17]

1) According to the table represented above, the number of games that can be played when 7 players are in the tournament is definitely 21 games. As you can see, in the last row there are 4 players to 5,which means that we have 4 new games. The same happens if we go from 3 players to 4, and finelly we have 3.

2) And what about the recursive rule for the original sequence, the approrpiate one is an = an-1 + n - 1, so the answer is lying in the second option from the scale.
According to the fact that the number of games is actually the sum of integers from 1 to n-1 we expect to have n number of players.
I am sure it's clear now!

3 0

3 years ago

Mr. Johnson sells erasers for $3 each. He sold 96 erasers last week and he sold 204 erasers this week. About how much more money

JulijaS [17]

96*3=288
204*3=612
612-288=324

He made $324 more

5 0

3 years ago

Read 2 more answers

Convert standard form to slope 13x-11y=-12

alisha [4.7K]

Answer:

Step-by-step explanation:

1. Isolate Y by subtracting 13x from both sides

2. Divide the whole equation by the coefficient of y (-11)

Final Equation

y = 13x/-11 + 12/11

Hope this helps! :)

6 0

3 years ago

Solve for x. " fx+g=h"

kkurt [141]

I hope this helps you

3 0

4 years ago

A motorboat traveling with a current can go 120 km in 4 hours. Against the current, it takes 6 hours to go the same distance. Fi

charle [14.2K]

The speed of motorboat in still water is 25 km/hr and speed of current is 5 km/hr

Solution:

Given that, motorboat traveling with a current can go 120 km in 4 hours

In water, the direction along the stream is called downstream

Let us find the downstream speed

Downstream distance = 120 km

time taken in downstream = 4 hours

The speed is given by formula:

$speed = \frac{distance}{time}$

$\text{ Downstream speed } = \frac{120}{4} = 30$

Thus downstream speed = 30 kilometer per hour

Against the current, it takes 6 hours to go the same distance

The direction against the stream is called upstream

Let us find upstream speed

Upstream distance = 120 km

time taken in upstream = 6 hours

$\text{Upstream speed } = \frac{120}{6} = 20$

Thus upstream speed is 20 kilometer per hour

Formula to use:

If the speed downstream is a km/hr and the speed upstream is b km/hr, then:

$\text{Speed in still water } = \frac{1}{2}(a+b) \text{ kilometer per hour }\\\\\text{Speed of stream } = \frac{1}{2}(a-b) \text{ kilometer per hour }$

Therefore,

$\text{Speed of boat in still water } = \frac{1}{2}(30+20) = 25\\\\\text{Speed of stream } = \frac{1}{2}(30-20) = 5$

Thus speed of motorboat in still water is 25 km/hr and speed of current is 5 km/hr

4 0

4 years ago