The table shows the amount of money in your bank account over a period of 5 weeks. The account does not pay interest. You plan to keep saving at the same rate until you have $650 in the account. Which equation could you use to find the number of weeks, n, it would take to reach your goal?

The given equation, 3.1x(2x9)=(3.1x2)x9, demonstrates the Associative Property of Multiplication. The property means that the way numbers are grouped in multiplication does not change the result.

The multiplication property shown in the equation 3.1x(2x9)=(3.1x2)x9 is referred to as the Associative Property of Multiplication. This property states that when three or more numbers are multiplied, the product does not depend on how the numbers are grouped. Therefore, (a x b) x c equals a x (b x c).

In the given equation, we can see this property applied. 3.1x(2x9) can be rearranged as (3.1x2)x9 and the results of both expressions will be the same. This demonstrates that the grouping does not affect the result of the multiplication.

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Final answer:

To find the expected number of accidents on three highways with Poisson distributions, sum the individual expectations: 0.3, 0.5, and 0.7, resulting in an expected 1.5 accidents per day.

Explanation:

The student asked how to find the expected number of accidents that will happen on any of the three highways in a day, given that the number of daily accidents on these highways are Poisson random variables with parameters 0.3, 0.5, and 0.7 respectively. To solve this, we shall sum the parameters of the Poisson distributions because the expectation of the sum of independent random variables is the sum of their expectations.

Therefore, we calculate the expected number of accidents as follows:

For the first highway with parameter 0.3, the expected number of accidents is 0.3.

For the second highway with parameter 0.5, the expected number of accidents is 0.5.

For the third highway with parameter 0.7, the expected number of accidents is 0.7.

Adding these together, we get:

Expected number = 0.3 + 0.5 + 0.7 = 1.5 accidents per day.

~q → ~p that's the answer

present value of annuity = annual payment * [ 1 - (1+i)^-n ]/i

=>

12500 = 128.04 * [1-(1+9%/12^-n]/9%/12

=>n = 42 payments

Present value of annuity formula yields approximately 42 payments for $12,500, with $128.04 monthly payments at 9% interest.

Let's break it down:

[tex]\[PV = Pmt \times \left[1 - \frac{{(1 + i)^{-n}}}{i}\right]\][/tex]

Where:

[tex]- \(PV\) is the present value of the annuity.\\- \(Pmt\) is the amount of each payment in the annuity.\\- \(i\) is the interest rate per period, expressed as a decimal.\\- \(n\) is the total number of payments.[/tex]

Given your values:

- [tex]\(PV\)[/tex] is $12,500.

- [tex]\(Pmt\)[/tex] is $128.04.

- [tex]\(i\)[/tex] is the monthly interest rate, which is [tex]\(9\% / 12 = 0.09 / 12\)[/tex] since the annual rate is divided by 12 for monthly payments.

- [tex]\(n\)[/tex] is what we're solving for.

Substituting these values into the formula, we have:

[tex]\[12,500 = 128.04 \times \left[1 - \frac{{(1 + 0.09/12)^{-n}}}{0.09/12}\right]\][/tex]

Now let's solve for [tex]\(n\):[/tex]

[tex]\[12,500 = 128.04 \times \left[1 - \frac{{(1 + 0.0075)^{-n}}}{0.0075}\right]\]\[1 - \frac{{(1 + 0.0075)^{-n}}}{0.0075} = \frac{{12,500}}{{128.04}}\]\[\frac{{(1 + 0.0075)^{-n}}}{0.0075} = 1 - \frac{{12,500}}{{128.04}}\]\[ (1 + 0.0075)^{-n} = 0.0075 \times \left(1 - \frac{{12,500}}{{128.04}}\right)\]\[ (1 + 0.0075)^{-n} = 0.0075 \times \left(1 - \frac{{12,500}}{{128.04}}\right)\]\[ (1 + 0.0075)^{-n} = 0.9920\]Taking the natural logarithm of both sides:\[ -n \ln(1 + 0.0075) = \ln(0.9920)\][/tex]

Using a calculator:

n ≈ [tex]\frac{{-0.008025}}{{-0.007472}}\][/tex]

n ≈ [tex]41.961\][/tex]

So, rounding up, we get , n ≈ 42

Therefore, it would take approximately 42 payments to reach a present value of $12,500 given the annuity with an annual interest rate of 9% compounded monthly and a payment of $128.04 per month.

The reason that ship A is moving -35km/h is because ship B acts as an "origin" and as things move closer to the "origin" they become negative and as things move away from the "origin" they become positive.

We know that the rate of Ship A is expressed as dAdt=−35 and the rate of Ship B is expressed as dBdt=25

Step 2: We want to figure out how many km Ship A and Ship B traveled in 4 hours

ShipA:−35kmh⋅4hr=−140km

Now if we take this −140km and add it to the 150km we can see that Ship A is now only 10km away from where Ship B began

ShipB:25kmh⋅4hr=100km

This means that Ship B is now 100km from where it originally started

We can now redraw our information

Step 3: We must use the Pythagorean Theorem to find the third side of the triangle

x2+y2=z2→102+1002=z2

z=√102+1002

Step 4: Now that we know z, we must differentiate the original equation in order to find the rate at which z in changing

x2+y2=z2→2xdxdt+2ydydt=2zdzdt

We can simplify by canceling out the 2's

xdxdt+ydydt=zdzdt

Step 5: Write down all the information and then plug into equation

x=10anddxdt=−35
y=100anddydt=25
z=√102+1002anddzdt=?

Now plug in the information

xdxdt+ydydt=zdzdt

10(−35)+100(25)=√102+1002dzdt

−350+2500=√102+1002dzdt

2150=√102+1002dzdt

21.393=dzdt

The distance between the ships are increasing at a rate of 21.393 km/h

Final answer:

The expected value of the gambling game with a cost of $5, and potential winnings of $10 for a sum of 10 or $20 for a sum 3, is −$2.78. The calculation shows the player will lose $2.78 on average per game, indicating it is not a profitable game to play long term. So, option (b) is correct.

Explanation:

The student is interested in determining the expected value of a gambling game where rolling two dice can result in either winning money or losing the cost to play. To find the expected value, we must consider the probability of each outcome and its associated payoff.

First, we calculate the chances of rolling a sum of 10 with two dice. There are three combinations that give a sum of 10: (4,6), (5,5), and (6,4). Since there are 36 possible outcomes when rolling two dice, the probability of obtaining a sum of 10 is 3/36 or 1/12.

Similarly, the only combinations that result in a sum of 3 are (1,2) and (2,1). Thus, the probability of rolling a sum of 3 is 2/36 or 1/18.

The expected value (EV) can be calculated using the formula:

EV = (−cost to play) + [P(sum of 10) × winnings for 10] + [P(sum of 3) × winnings for 3]

Substituting the given values yields:

EV = (−5) + [(1/12) × 10] + [(1/18) × 20]

After calculating, we find tha-

EV = −$2.78.

Since the expected value is negative, this implies that, on average, the player will lose $2.78 per game. Therefore, playing this game would result in an average loss over time.

Answer:

here are numerous information's already given in the question. Based on those information's, the answer to the question can be easily deduced.

Angle at which the plane is flying in respect to the observer = 35 degree

Altitude at which the plane is flying = 17000 feet

The distance at which the plane is flying from the observer = x 

Then

x = 17000/sin 35

 = 17000/0.57357

 = 29638.93 feet

 = 29639 feet

From the above deduction, we can conclude that the correct option among all the options given in the question is the third option.

GIVE BRainliest plz

The distance between the plane and the observer is 29,638 feet.

Data;

This is the use of SOHCAHTOA which is the relationship between sides of a right angle triangle and it's angle.

In this case, we have the value of opposite and angle and we need to find the hypothenuse.

Using sine of the angle,

[tex]sin\theta = \frac{opposite}{hypothenuse} \\sin 35 = \frac{17000}{x}\\ x = \frac{17000}{sin35}\\ x = 29,638 feet[/tex]

The distance between the plane and the observer is 29,638 feet.

Learn more on trigonometric ratios here;

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If a person swim the 50-meter freestyle in 28.12 seconds. This is 0.14 second less than persons previous fastest time is 28.26.

What is Equation?

Two or more expressions with an equal sign is called as equation.

Given that,

One swim the 50-meter freestyle in 28.12 seconds..

The previous fastest time be x.

The new fastest time is 28.12 seconds.

New fastest time is 0.14 second less than your previous fastest time.

So, 28.12+0.14=x

28.26=x

Hence the previous fastest time is 28.26 seconds.

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Answer:

C. 2+_ square root 10i / 2

Step-by-step explanation:

multiply Celsius by 9/5 then add 32 to get Fahrenheit

25 * 9/5 = 45

45 +32 = 77 degrees Fahrenheit

Final answer:

To find the number of miles Sara can drive on 12 gallons of gas, divide the total miles she drove by the total gallons of gas she used. Multiply this fuel efficiency by the number of gallons to get the result. (Option C)

Explanation:

To calculate the number of miles Sara can drive on 12 gallons of gas, we need to first find her fuel efficiency in terms of miles per gallon. To do this, we divide the total miles she drove (117 miles) by the total gallons of gas she used (5.2 gallons).

117 miles / 5.2 gallons = 22.5 miles per gallon

Next, we can use this fuel efficiency to calculate the number of miles Sara can drive on 12 gallons of gas. We multiply her fuel efficiency (22.5 miles per gallon) by the number of gallons (12 gallons).

22.5 miles per gallon * 12 gallons = 270 miles

Therefore, Sara can drive 270 miles on 12 gallons of gas.

Answer:

12.00%

Step-by-step explanation:

[tex]$3.36\\[/tex] ÷ [tex]$28.00\\[/tex] = [tex]0.12\\[/tex]

[tex]100 *0.12=12%\\[/tex] %

Through applying the techniques of implicit differentiation to the equation x³y² - x⁴y + 4xy³ = 0, the derivative dx/dy is found to be [x⁴ - 4y³ - 2x³y]/[3x²y² - 4x³y].

The subject of your question is implicit differentiation in calculus, a branch of mathematics. You wish to know how to differentiate the equation

x³y² - x⁴y + 4xy³ = 0

with respect to y (y is independent and x is dependent).

The initial step in implicit differentiation is to derive every term of an equation. So, we end up with:

3x²y²(dx/dy) + 2x³y(dy/dx) - 4x³y(dx/dy) - x⁴ + 4y³ + 12x²y² = 0.

After grouping like terms together, the equation become:

dx/dy[3x²y² - 4x³y] = x⁴ - 2x³y - 4y³

Eventually, divide both sides by [3x²y² - 4x³y] to isolate dx/dy and get the final answer:

dx/dy = [x⁴ - 4y³ - 2x³y]/[3x²y² - 4x³y]

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