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3 years ago

15

Help me please and thank you

1 answer:

AURORKA [14]3 years ago

4 0

Answer:

B

Step-by-step explanation:

You just count the dots and check the tables.

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A forest has 800800800 pine trees, but a disease is introduced that kills \dfrac{1}{4} 4 1 start fraction, 1, divided by, 4, e

snow_tiger [21]

This is a perfect example of exponential decay. In this case the growth factor should be represented by a fraction, and it is! This forest, starting out with apparently ( 800? ) pine trees, has a disease spreading, which kills 1 / 4th of each of the pine trees yearly. Therefore, the pine trees remaining should be 3 / 4.

Respectively 3 / 4 should be the growth factor, starting with 800 pine trees - the start value. This can be represented as such,

$P( t ) = a( b )^t$ - where a = start value, b = growth factor, t = time ( <em>variable quantity</em> )

____

Thus, the function $P( t ) = 800( \frac{3}{4} )^t$ can model this problem. The forest after t years should have P( t ) number of pine trees remaining.

3 0

3 years ago

Whats the gamble formula

Juli2301 [7.4K]

$\quad\quad\quad\quad\huge\tt{Answer \: ☕}$

┈──────────────────────────┈

<h3>The formula looks like this: </h3>

(Probability of Winning) x (Amount Won per Bet) – (Probability of Winning) x

(Amount Won per Bet) – (Probability of Losing) x (Amount Lost per Bet).

So, in our example we would plug in these variables, a 50% chance of winning, winning $6, a 50% chance of losing, and $5 lost.

<h3>The formula for expected value = </h3>

(fair win probability) x (profit if win) - (fair loss probability) x (stake).

This is the formula in the OddsJam sports betting expected value calculator.

$\LARGE \tt{Example: \color{purple}{ Amount \: of \: Win}}$

┈──────────────────────────┈

$\quad\quad\quad \large\tt{Solve \: for \: \color{red}{Amount \: of \: Win}}$

$\quad\quad \quad\quad \large\tt{x = Amount \: of \: Win}$

_ _ _ _ _ _ _ _ _ _ _ _

$\quad\quad\quad \implies\sf{0 = \frac{2}{3} * \times - .50}$

$\quad\quad\quad\implies\tt{0 + .50 = \frac{2}{3}* \times - .50 + .50 }$

$\quad\quad\quad\implies\tt{0 + .50 = \frac{2}{3} * \times + 0}$

$\quad\quad\quad\implies \color{blue}\boxed{ \tt \color{red}{.50 = \frac{2}{3}* \times }}$

_ _ _ _ _ _ _ _ _ _ _ _

Therefore, the amount of win is $\tt{.50 = \frac{2}{3}* \times }$

$\large\tt{From: \: \#Brainly.PH}$

┈──────────────────────────┈

4 0

2 years ago

The students in Mrs. Perez’s math class were asked to produce a drawling of themselves using the scale 0.75 inches equals 2 feet

Pachacha [2.7K]

The answer should be 2.07 inches

3 0

3 years ago

In a line of students, Jenna is number 8. The teacher says that a rule for a number pattern is add 4. The first student in line

coldgirl [10]

Jenna should say 35

Hope this helps!

3 0

4 years ago

Which of the following integrals represents the area of the region bounded in the first quadrant by x = pi/ 4 and the functions

Kaylis [27]

Answer:

option B is true.

Step-by-step explanation:

We are given that two functions

f(x)= $sec^2x$ and g(x)=sin x and a line x = $\frac{\pi}{4}$

We have to find the area of the region bounded in the first quadrant by x= ${\pi}{4}$ and two functions

We know that the area bounded by two functions

=Integration of region(Upper curve- lower curve)

Therefore, function of sec square x is upper curve and function of sin x is lower function

Therefore, limit of x changing from 0 to $\frac{\pi}{4}$

Hence, the area of the region bounded in the first quadrant and two functions is given by

$=\int_{0}^{\frac{\pi}{4}} (sec^2x-sinx) dx$

Therefore, option B is true.

7 0

3 years ago