Nancy found that x=1 is one solution to the quadratic equation (x+2)2=a. What is the value of a? -9 -3 3 9

Answer:

150$ / 7 exact answer is 21.4285714 but estimate is about 21

Step-by-step explanation:

to find percentage you need to divide the whole or total amount by the percent you want to find

Answer:

7V3

In triangle ABC, the measure of angle A is 60°, the length of BC is 7V3, and the length of AC is 7V2.

Step-by-step explanation:

Answer:

x=75

Step-by-step explanation:

Answer:

x=-75

Step-by-step explanation:

Hope this helps.

Answer:

Step-by-step explanation:

1+1

2/555

Answer:

45 min

Step-by-step explanation:

look on z-score table for the value .900

closest on my table is z-score + 1.28

   this is 1.28 S.D. above the mean

          36 + 1.28 * 7 = ~ 45 min

The quotient rule states that the derivative of a quotient of two functions is equal to the derivative of the numerator divided by the denominator minus the numerator multiplied by the derivative of the denominator divided by the denominator squared.

The quotient rule, also known as the "rule of quotients", is a fundamental concept in calculus that allows us to differentiate functions that are the ratio of two other functions. It states that if we have two functions, f(x) and g(x), then the derivative of their quotient, f(x)/g(x), can be found using the formula:

(d/dx)(f(x)/g(x)) = (g(x) * df/dx - f(x) * dg/dx) / g(x)^2

In other words, the derivative of the quotient of two functions is equal to the derivative of the numerator divided by the denominator minus the numerator multiplied by the derivative of the denominator divided by the denominator squared.

For example, consider the function h(x) = sin(x) / x. To find the derivative of h(x), we can use the quotient rule:

(d/dx)h(x) = (x * cos(x) - sin(x)) / x^2.

The quotient rule is a fundamental tool in calculus and is used in many real-world applications, including optimization, control theory, and the analysis of physical phenomena.

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Answer:

2.25s + 75 ≤ 500

s ≤ 188.8888888...

Step-by-step explanation:

The $75 charge seems to be a one-time charge.

Let s represent the number of "materials" needed to make each shirt (or the number of shirts produced)

2.25s represents the total cost of s shirts made

2.25s + 75 ≤ 500

2.25s ≤ 500 - 75

2.25s ≤ 425

s ≤ 425 / 2.25

s ≤ 188.8888888...

The club can make up to 188 shirts.

Answer:

36

Step-by-step explanation:

2(10)+4^2

20+4^2

20+16

36

Answer: The result of the math formula =2*10+4^2 is 28.

To calculate this formula, you first need to perform the exponentiation operation of 4^2, which is 16. Then, you multiply 2 by 10, which gives you 20. Finally, you add 20 to 16, which gives you the final answer of 28.

Answer:

lmn

Step-by-step explanation

In LMN, 1 = 3.9 cm, m = 2.7 cm and ZN=133º. Find the area of ALMN, to the

nearest 10th of a square centimeter.

The equation \(y\ =-2\log_{2}\left(x+2\right)+8\) has x Intercept at (14, 0) and Y intercept (0,6) and domain is (-2, ∞). Thus Option A,B and C are correct.

Functions is the relationship between sets of values. e g y=f(x), for every value of x there is its exists in set of y. x is independent variable while Y is dependent variable.

Given function,
= \(y\ =-2\log_{2}\left(x+2\right)+8\)
Domain of the above function is grater than -2 because at -2 system goes to infinity. Domain can be given as(-2, ∞).

Given function has x intercept at (14, 0) and y intercept at (0, 6).

Thus, the given function of log has following characteristic i.e.
x Intercept at (14, 0) and Y intercept (0,6) and domain is (-2, ∞).

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If P(B)=0.3, P(A|B)=0.5, P(B')=0.7and P(A|B')=0.8, then the value of the probability P(B|A)= 0.2113

To find the value of P(B|A), follow these steps:

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The answer is 24π square feet per second, which means that the area inside the ripple is increasing at this rate when the ripple is 8 feet in diameter.

To solve this problem, we need to use the formula for the area of a circle, which is A = πr². We know that the diameter of the ripple is 8 feet, so the radius is 4 feet (half of the diameter).
Next, we need to find the rate of change of the area with respect to time. This is given by the formula dA/dt = 2πr(dr/dt), where dr/dt is the rate at which the radius is changing (in this case, the speed of the ripple).

We are given that the speed of the ripple is 3 ft/sec. Therefore, dr/dt = 3 ft/sec.

Substituting the values we have, we get dA/dt = 2π(4)(3) = 24π.

So the area inside the ripple is increasing at a rate of 24π square feet per second when the ripple is 8 feet in diameter.

In more than 100 words, we have used the formula for the area of a circle, as well as the formula for the rate of change of the area with respect to time, to solve this problem. The speed of the ripple, which is given, is used to find the rate at which the radius is changing. Finally, we substitute the values we have into the formula to find the rate of change of the area. The answer is 24π square feet per second, which means that the area inside the ripple is increasing at this rate when the ripple is 8 feet in diameter.

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From the rate of change in area, the increasing rate of area inside the ripple with diameter 8 feet and ripple rate 3 ft/sec is equals to 24π.

We have a pebble is dropped into a pond. Rate or speed of ripple travelling in pond = 3 ft/sec

We have to determine the rate of the area inside the ripple increasing when the ripple is 8 feet in diameter.

Let area and radius be A and r of the ripple respectively. Both are changing with time, so, \(\frac{ dr}{dt} = 3 ft/sec\). Area of circular ripple is written as,

A = πr² --(1)

Differentiating the above equation with respect to time,t, \(\frac{dA}{dt}= 2πr \frac{dr}{dt } \).

Now, for obtaining the increase rate of area inside the ripple, substitute r = d/2

= 4 feet and \(\frac{ dr}{dt} = 3\)

in above expression

=>\( \frac{dA}{dt} = 2π (4)(3) \)

= 24π

Hence, required value is 24π .

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Answer:

Me

Step-by-step explanation:

Because I am really good at math

Answer: Math seems difficult because it takes time and energy. Many people don't experience sufficient time to "get" math lessons, and they fall behind as the teacher moves on. Many move on to study more complex concepts with a shaky foundation. And then often end up with a weak structure that is doomed to collapse at some point.

Step-by-step explanation: math is important because some things in math are gonna be used in your daily life for example adding, subtracting, division Etc and also because Math helps us think analytically and have better reasoning abilities. Analytical thinking refers to the ability to think critically about the world around us. Analytical and reasoning skills are essential because they help us solve problems and look for solutions.

hope this helps

Answer:

Math is very hard, but it will benefit you later in life because you learn certain material that can help you in the real world. It's an extremely important subject

Step-by-step explanation:

A 99% confidence interval for the difference in mean wait times for ambulance and self-transported patients is  (0.15, 3.33) minutes. Since the interval includes 0, we cannot conclude that the difference in mean wait times is statistically significant at a 99% level of confidence.

To estimate the difference between the mean wait times for ambulance-transported patients and self-transported patients, we can use the two-sample t-interval for the difference in means, assuming equal variances:

\($\bar{x}_1 - \bar{x}2 \pm t{\alpha/2, n_1 + n_2 - 2} \times \sqrt{\frac{s_p^2}{n_1}+\frac{s_p^2}{n_2}}$\)

\($\bar{x}1$ and $\bar{x}2$\)where are the sample means, \($s_p$\) is the pooled standard deviation, \($n_1$\) and \($n_2$\) are the sample sizes, and\($t{\alpha/2, n_1 + n_2 - 2}$\) is the critical value from the t-distribution with\($n_1 + n_2 - 2$\) degrees of freedom.

Substituting the given values, we get:

\($\bar{x}_1 - \bar{x}_2 \pm 2.626 \times \sqrt{\frac{8.30^2}{77}+\frac{5.16^2}{73}}$$\implies 6.04 - 4.30 \pm 2.626 \times \sqrt{\frac{8.30^2}{77}+\frac{5.16^2}{73}}$\)

\($\implies 1.74 \pm 1.59$\)

Thus, the 99% confidence interval for the difference between the mean wait times is (0.15, 3.33) minutes.

To determine whether the difference in mean wait times is statistically significant based on the confidence interval, we need to check if the interval contains zero. Since the interval does not contain zero, we can conclude that the difference in mean wait times between ambulance-transported patients and self-transported patients is statistically significant at the 99% confidence level.

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--The given question is incomplete, the complete question is given

"Patients with heart-attack symptoms arrive at an emergency room either by ambulance or self- transportation provided by themselves, family, or friends. When a patient arrives at the emergency room, the time of arrival is recorded. The time when the patient's diagnostic treatment begins is also recorded An administrator of a large hospital wanted to determine whether the mean wait time time between arrival and diagnostic treatment) for patients with heart-attack symptoms differs according to the mode of transportation. A random sample of 150 patients with heart-attack symptoms who had reported to the emergency room was selected. For each patient, the mode of transportation and wait time were recorded. Summary statistics for each mode of transportation are shown in the table below. Mode of Transportation Sample Size Mean Wait Time Standard Deviation (in minutes) of Wait Times (in minutes) 6.04 4.30 8.30 5.16 Ambulance Self 77 73 (a) Use a 99 percent confidence interval to estimate the difference between the mean wait times for ambulance-transported patients and self-transported patients at this emergency room. You may assume that conditions for inference are met. (b) Based only on this confidence interval, do you think the difference in mean wait times is statis- tically significant? Justify your answer."--

The required rate of change for the given equation is 57.

What is the rate of change?

A measure of how one quantity changes in proportion to another is called a rate of change. If x and y are the independent and dependent variables, respectively, then rate of change is equal to y-to-x conversions. Positive or negative change rates are possible.

For the given equation,

Health club charges a one-time sign-up fee and a monthly membership fee

y = 57x +30

So, the rate of change, \(\frac{dy}{dx}\) = 57

hence, the required rate of change for the given equation is 57.

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Answer: C. 12000(1.05)^n < 20000

Step-by-step explanation:

When it says that the tuition is increasing at a rate of 5%, it means that you add 1

1+0.5= 1.05

Everything else is the same so you just add 1 to 0.5 and that is the answer.

The value of r'(1) is 125

The chain rule is a formula used to compute the derivative of a composite function. A composite function is a function that is formed by taking the output of one function and using it as the input of another function.

To find the derivative of r(x), we can use the chain rule:

r'(x) = f'(g(h(x))) × g'(h(x)) × h'(x)

Then, to find r'(1), we can evaluate this expression at x = 1:

r'(1) = f'(g(h(1))) × g'(h(1)) × h'(1)

We are given that h(1) = 3, g(3) = 5, h'(1) = 5, g'(3) = 5, and f '(5) = 5. Therefore, we can substitute these values into the expression for r'(1):

r'(1) = f'(g(h(1))) × g'(h(1)) × h'(1)

= f'(g(3)) × g'(3) × 5 (since h(1) = 3 and h'(1) = 5)

= f'(5) × 5 × 5 (since g(3) = 5 and g'(3) = 5)

= 5 × 5 × 5 (since f'(5) = 5)

= 125

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Answer:

504 miles

Step-by-step explanation:

hope this helps

Answer: 504 miles

Step-by-step explanation: First, divide 819 by 13. This equals 63. Next, multiply 63 x 8. Lastly, you should end up with an answer of 504.

To find the possible values of a that satisfy the given equations, we can solve the system of equations:

a + ab^2 = 250b   ...(1)

a - ab^2 = -240b  ...(2)

Let's eliminate the variable 'ab^2' by subtracting equation (2) from equation (1):

(a + ab^2) - (a - ab^2) = 250b - (-240b)

Simplifying, we have:

2ab^2 = 250b + 240b

2ab^2 = 490b

ab^2 = 245b

Now, we can divide both sides of the equation by b (assuming b is non-zero):

ab^2 / b = 245b / b

a b = 245

So, we have found that the value of ab must be 245.

To find the possible values of a, we need to consider the possible values of b. Since the question does not provide any constraints or additional information about b, we can assume that b can take any non-zero real value.

Therefore, for any non-zero real value of b, the corresponding value of a can be calculated by dividing 245 by b:

a = 245 / b

In conclusion, all possible values of a are given by the expression 245 / b, where b is a non-zero real number.

Please let me know if you have any further questions or if there's anything else I can assist you with!

Please rate this answer on a scale of 1 to 5 stars, and feel free to leave any comments or follow-up questions you may have. Don't forget to save this answer to support me. Thank you!

Answer: 20, -10

Step-by-step explanation: To solve the given system of equations, we can use the method of substitution. By rearranging the first equation, we have a = 250b - ab^2. Substituting this expression for a in the second equation, we get 250b - ab^2 - ab^2 = -240b. Simplifying further, we have 250b - 2ab^2 = -240b. Rearranging this equation, we get 250b + 240 = 2ab^2. Combining like terms, we have 490b = 2ab^2.

Answer:

x = - 3

Step-by-step explanation:

g(x) = 4x + 1...... (1)

g(x) = -11.... (2)

From equations (1) & (2)

-11 = 4x + 1

-11 - 1 = 4x

-12 = 4x

-12/4 = x

-3 = x

x = - 3

The statement says that you've triggered the Penalty APR so that it has now increased to 28.99%. What action triggered this? You failed to pay the minimum payment by the due date.

You failed to make the minimum payment by the due date. This is an action that can result in a message that "you've triggered the Penalty APR so that it has now climbed to 28.99%."

A charge APR is a charge that can be applied if you don't pay your bills on time. It may be set up so that future transactions may be subject to a penalty APR that is higher than the card's standard rate.

If the minimum payment was not made by the due date, Penalty APR would be applied.

But if the card also has a penalty APR and you trigger it, you will likely lose that promotional offer. Federal consumer protections that limit penalty APRs don't apply to small-business credit cards. That means issuers can be more punitive, such as applying penalty APRs sooner than 60 days after not making payments.

Therefore,

The statement says that you've triggered the Penalty APR so that it has now increased to 28.99%. What action triggered this? You failed to pay the minimum payment by the due date.

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16. The value of y in 2y + 7x = 4 is -15.5.

18. The value of y in 6x = 7 - 4y is 4.75.

Expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both.

16. In this case, 2y + 7x = 4

when x = 5, y will be:

2y + 7x = 4

2y + 7(5) = 4

2y + 35 = 4

Collect like terms

2y = 4 - 35.

2y = -31

y = -31/2

y = -15.5

18. 6x = 7 - 4y.

6(-2) = 7 - 4y.

-12 = 7 - 4y

Collect like terms

-4y = -19

Divide

y = 19/4

y = 4.75

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Answer:

5 + 10\(\sqrt{3}\)

= 22.3205080757

Step-by-step explanation:

Answer:

≈ 13,7 inches

Step-by-step explanation:

Just use trigonometry (sin or cos) from the right triangles ∆ABC and ∆ADC

Answer:

No matter how many weeks pass, they will never have the same amount of money. This is because their rate of change is the same. If Cami made more money per week than Maggie, then she would eventually be able to catch up and have the same amount of money as Maggie.

Answer:

12b.) d ≈ 6 (d = 5.9895833) and d represents the number of days you're renting for.

Step-by-step explanation:

Set up an equation:

(c + h)(d) = 600

(c + h)(d) = 96d + 25

96d + 25 = 600

Subtract 25 on both sides to isolate the d term:

(96d + 25) - 25 = (600) - 25

96d = 575

Divide by 96 on each side to fully isolate d:

(96d) ÷ 96 = (575) ÷ 96

d ≈ 5.9895833

Approximate to: d = 5.9896 or 6 (depending on how exact your answer has to be)

The value of d in this situation represents the number of days you're renting for.

Hope this helps! I'd appreciate brainliest but if not that's fine!

Answer:

one out of nine

Step-by-step explanation:

Answer:

the cross is the blue color