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2 years ago

7

There are 16 students who are participating in a chess tournament. The players will be randomly chosen. What is the probability

that Shira will play Joey in the first game?

1 answer:

Ainat [17]2 years ago

6 0

2/16 which is equal to 1/8 or 0.125

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Evaluate the expression for the given value of x.<br> 5x + 6 for x = 4

Brrunno [24]

If x=4, rewrite the equation which would be 5(4)+6

First you multiply 4 by 5 which would give you 20

Now put in the 6 in the equation

20+6

20+6=26

Therefore for the expression given the value of x would make your answer be 26

5 0

2 years ago

Kevin is observing the population of the fish he put into a pond. He built a pond and populated it with 500 fish. The population

LuckyWell [14K]

Given that the number of years should be represented with x, the number of fish in the pond after x years should best be represented with f(x). The equation that would best show the given scenario in the problem above is,
f(x) = 500(2^x)
From the given, 500 is used as the initial population of the fish.

4 0

2 years ago

The value of a certain car decreases by 16% each year. What is the 1⁄2-life of the car?

svet-max [94.6K]

Answer:

The half life of the car is 3.98 years.

Step-by-step explanation:

The value of the car after t years is given by the following equation:

$V(t) = V(0)(1-r)^{t}$

In which V(0) is the initial value and r is the constant decay rate, as a decimal.

The value of a certain car decreases by 16% each year.

This means that $r = 0.16$

So

$V(t) = V(0)(1-r)^{t}$

$V(t) = V(0)(1-0.16)^{t}$

$V(t) = V(0)(0.84)^{t}$

What is the 1⁄2-life of the car?

This is t for which V(t) = 0.5V(0). So

$V(t) = V(0)(0.84)^{t}$

$0.5V(0) = V(0)(0.84)^{t}$

$(0.84)^{t} = 0.5$

$\log{(0.84)^{t}} = \log{0.5}$

$t\log{0.84} = \log{0.5}$

$t = \frac{\log{0.5}}{\log{0.84}}$

$t = 3.98$

The half life of the car is 3.98 years.

7 0

3 years ago

Help me on this :( pls

Doss [256]

X = 12 dhucdjvdsiksdjfbhfud gimme brainliest

4 0

2 years ago

Read 2 more answers

$70 plus a 5% tax and a 15% tip

Serjik [45]

Answer:

maybe 88.5

Step-by-step explanation:

calculator is god

5 0

2 years ago