3a-7=4b+1 solve for b

Answer:

What the anyways uhhh

Step-by-step explanation:

49.76

Answer:

49.76

Step-by-step explanation:

You just add lol.

Look at screenshot below:  

Answer:

None of the above

14 = 3x -7

3x = 21

x = 7

The formula for the volume of a cone is:

V = (1/3)πr²h

where r is the radius of the base, h is the height of the cone, and π is pi.

In this case, the slant height is given as 17 cm, which we can use with the radius to find the height of the cone using the Pythagorean theorem:

h² = s² - r²

h² = 17² - 8²

h² = 225

h = 15

Now that we have the height, we can plug in the values for r and h into the formula for the volume:

V = (1/3)π(8²)(15)

V = (1/3)π(64)(15)

V = (1/3)(960π)

V = 320π

Therefore, the volume of the cone is 320π cubic cm. Answer: 320π.

Explicación paso a paso:

Dado

an = n + 3

bn = 5n-1

a) an-bn = n + 3- (5n-1)

= n + 3-5n + 1

= n-5n + 3 + 1

= -4n + 4

an-bn = 4-4n

b) an + 3bn = (n + 3) +3 (5n-1)

= n + 3 + 3 (5n) +3 (-1)

= n + 3 + 15n-3

= n + 15n + 3-3

= 16n + 0

= 16n

an + 3bn = 16n

3) Dado a1 = 1, a2 = 1

an = an-1 + an-2

Debemos escribir los primeros ocho términos de la secuencia.

a3 = a3-1 + a3-2

a3 = a2 + a1

a3 = 1 + 1

a3 = 2

a4 = a3 + a2

a4 = 2 + 1

a4 = 3

a5 = a4 + a3

a5 = 3 + 2

a5 = 5

a6 = a5 + a4

a6 = 5 + 3

a6 = 8

a7 = a6-a5

a7 = 8 + 5

a7 = 13

a8 = a7 + a6

a8 = 13 + 8

a8 = 21

Por tanto, los primeros ocho términos de la secuencia son 1, 1, 2, 3, 5, 8, 13 y 21

Answer:

1) 14 : 30

2) 24.5 : 52.5

3) 3.5 : 7.5

4) 1 : 2.14

5) 0.47 : 1

6) 5.6 : 12

7) 9.33 : 20

Step-by-step explanation:

To get the answer for any gaps on the left e.g. 14 : __

divide the number that you have (14) by the number you were given (7).

And multiply your answer (2) by the number on the side you want to get (15), whatever you get from that (30) is you final answer.

To get the answer for any gaps on the right e.g. __ : 12

divide the number that you have (12) by the number you were given (15).

12÷15

And multiply your answer (0.8) by the number on the side you want to get (7)

0.8×7

whatever you get from that (30) is you final answer.

Answer:

-4

Step-by-step explanation:

Answer:

y = 1/3x - 3

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

1/18 x³y + 7/18 xy²

1/18 xy (x² + 7y)

Answer:

\(\sqrt{x^2y^3}+2\sqrt{x^3y^4}+xy\sqrt{y}=2xy^2\sqrt{x}+2xy\sqrt{y}\)

Hence, ption B is true.

Step-by-step explanation:

Given the expression

\(\sqrt{x^2y^3}+2\sqrt{x^3y^4}+xy\sqrt{y}\)

solving the expression

\(\sqrt{x^2y^3}+2\sqrt{x^3y^4}+xy\sqrt{y}\)

as

\(\sqrt{x^2y^3}=xy\sqrt{y}\)

\(2\sqrt{x^3y^4}=2xy^2\sqrt{x}\)

so the expression becomes

\(\:\sqrt{x^2y^3}+2\sqrt{x^3y^4}+xy\sqrt{y}=xy\sqrt{y}+2xy^2\sqrt{x}+xy\sqrt{y}\)

Group like terms

                                        \(=2xy^2\sqrt{x}+xy\sqrt{y}+xy\sqrt{y}\)

Add similar elements

                                        \(=2xy^2\sqrt{x}+2xy\sqrt{y}\)

Therefore, we conclude that:

\(\sqrt{x^2y^3}+2\sqrt{x^3y^4}+xy\sqrt{y}=2xy^2\sqrt{x}+2xy\sqrt{y}\)

Hence, option B is true.

Answer:

b

Step-by-step explanation:

The correct answer is (3,0) and (5,0), which is not one of the given options. The closest option is (4,0) and (5,0), which is not entirely accurate in the graph of parabola.

To find the x-intercepts of the parabola represented by g(x) = x^2 - 8x + 15, we need to find the values of x for which g(x) equals zero. Mathematically, we can set g(x) = 0 and solve for x using the quadratic formula or by factoring the equation.

Using the quadratic formula, we have:

x = (-b ± sqrt(b^2 - 4ac)) / 2a

where a, b, and c are the coefficients of the quadratic equation ax^2 + bx + c = 0.

In this case, a = 1, b = -8, and c = 15. Plugging these values into the quadratic formula, we get:

x = (8 ± sqrt(8^2 - 4(1)(15))) / 2(1)

x = (8 ± sqrt(16)) / 2

x = 4 ± 2

So the x-intercepts are (2,0) and (6,0). Note that these values match up with the points where the parabola intersects the x-axis in the graph.

Therefore, The correct answer can be obtained by solving for x as shown above or by reading the x-coordinates of the x-intercepts directly from the graph of the parabola.

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Answer:

Step-by-step explanation:

To solve this, we need to isolate the variable.

Hence, the value of the variable is -12.

When you write your measurement as the mean ± standard deviation, it means that you are displaying how far the data is spread out from the mean value. A normal distribution is one that is symmetrical and bell-shaped, where most of the data lies near the mean value.

When you write your measurement as the mean ± standard deviation, it means that you are displaying how far the data is spread out from the mean value. In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values. When you add the standard deviation to the mean and also subtract the standard deviation from the mean, you get the upper and lower bounds of the range that contains about 68% of the data. This range is called one standard deviation.The value of the standard deviation indicates how much the data varies around the mean. If the standard deviation is high, then the data is widely spread out and vice versa. Additionally, when you write a measurement as the mean ± standard deviation, it is assumed that the data is normally distributed. A normal distribution is one that is symmetrical and bell-shaped, where most of the data lies near the mean value.

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Repeated measures study is a technique used in statistics that involves taking multiple measures from the same individual or group. The major concern with a repeated-measures study is the possibility of carry-over effects.

What is a repeated-measures study?A repeated-measures study is a design used in statistics, where all the members of a given sample group are evaluated on two or more occasions. In other words, the repeated-measures study can be viewed as a test-retest design.In this type of study, participants undergo a specific treatment or intervention, and then their responses or measurements are evaluated at various intervals to examine any effects of the intervention. The repeated measures are then compared, and statistical tests are used to determine whether there are any significant differences in the results.

The possibility of carry-over effects: When conducting a repeated-measures study, the possibility of carry-over effects is a major concern. This occurs when the effects of the first treatment are still present when the second treatment is applied, resulting in an unintended impact on the second set of results. For example, if an experimental group is treated with a medication and then evaluated, and the same group is treated with a different medication and then evaluated, the results may be influenced by the residual effects of the first medication.

A carry-over effect can result in an inaccurate representation of the study's effect and can decrease the validity of the results. As a result, researchers must establish an appropriate washout period to reduce the impact of the carry-over effects before conducting a repeated-measures study.

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Answer:

11x+99

-21x+14

Step-by-step explanation:

Answer:

is  the last one brof

Step-by-step explanation:

Simplify is

18x3−27x2+16x−4

Answer:

Time = 133.3 secs

Step-by-step explanation:

Speed = Distance / Time

Rearranging the formula

Time = Distance / Speed

Where D = 200 m , S = 1.5 m/s

Time = 200 / 1.5

Time = 133.3 secs

Answer:

133.3 seconds

Step-by-step explanation:

200/1.5 = 133.3

Answer:

75/3=25

25*4= 100 words

Answer:

The surface area increases by 4 times.

Step-by-step explanation:

square root of 288 = 16.970562.... (= 1 side)

1 side(x2) = 33.941125...... (= double of the side)

New area = new side squared

(33.94111....) squared =  1,152 (new area)

1,152/288 = 4    

new area is 4 times bigger

288 x4 = 1,152

a) The number of heads that occur on flip i, Xi, follows a Bernoulli distribution with parameter p. Therefore, the probability mass function (PMF) of Xi is given by:

P(Xi = x) = p^x(1-p)^(1-x), for x = 0,1

To find PX33(x), we need to compute the probability that X33 takes on the value x. Since each flip is independent, we can use the PMF of Xi to compute the joint PMF of X1, X2, ..., X100:

P(X1 = x1, X2 = x2, ..., X100 = x100) = p^(x1 + x2 + ... + x100) (1-p)^(100 - x1 - x2 - ... - x100)

Now, we can use the fact that the events X1 = x1, X2 = x2, ..., X100 = x100 are mutually exclusive and exhaustive (since each flip can only have two possible outcomes), and use the law of total probability to compute PX33(x):

PX33(x) = ∑ P(X1 = x1, X2 = x2, ..., X100 = x100), where the sum is taken over all possible combinations of x1, x2, ..., x100 that satisfy x33 = x.

Since we are only interested in the value of X33, we can fix x33 = x and sum over all possible combinations of x1, x2, ..., x32 and x34, x35, ..., x100 that satisfy the condition:

x1 + x2 + ... + x32 + x34 + ... + x100 = 100 - x

This is the same as flipping a biased coin 99 times and counting the number of heads that occur. Therefore, we have:

PX33(x) = P(X = 100 - x) = p^(100-x) (1-p)^x

b) X1 and X2 are independent if the outcome of X1 does not affect the outcome of X2. Since each flip is independent, X1 and X2 are also independent.

c) Y = X1 + X2 + ... + X1000 follows a binomial distribution with parameters n = 1000 and p, where p is the probability of getting a head on each flip. Therefore, the PMF of Y is given by:

PY(y) = C(1000,y) p^y (1-p)^(1000-y), for y = 0,1,2,...,1000

where C(n,k) denotes the binomial coefficient.

d) The expected value of Y is:

E[Y] = E[X1 + X2 + ... + X1000] = E[X1] + E[X2] + ... + E[X1000] (by linearity of expectation)

Since each Xi has the same distribution, we have:

E[Xi] = p*1 + (1-p)*0 = p

Therefore, E[Y] = 1000p.

The variance of Y is:

Var[Y] = Var[X1 + X2 + ... + X1000] = Var[X1] + Var[X2] + ... + Var[X1000] + 2 Cov[Xi, Xj]

Since each Xi has the same distribution, we have:

Var[Xi] = p(1-p)

and

Cov[Xi, Xj] = 0 for i ≠ j, since Xi and Xj are independent.

Therefore, we have:

Var[Y] = 1000p(1-p)

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Answer:

5

Step-by-step explanation:

- ohcogcogdgsogxicrkrxlgx

Answer:

30 gallons

Step-by-step explanation:

Answer:

1) 0.28

2) 0.35

Step-by-step explanation:

multiplication and subtraction

Answer:The answer is 0.35

3/5-1/4=0.35

Step-by-step explanation:

you go online and write tiger-algera.com, then enter the calculation, it will give you the result and solution.Thanks

the probability that the system will fail is approximately 0.421096 or 42.11%.

To find the probability that the system will fail, we need to consider the components working in series. In this case, for the system to fail, at least one of the components must fail.

The probability of the system failing is equal to 1 minus the probability of all three components working together. Let's calculate it step by step:

1. Find the probability of all three components working together:

  P(all components working) = (1 - p1) * (1 - p2) * (1 - p3)

                            = (1 - 0.09) * (1 - 0.11) * (1 - 0.28)

                            = 0.91 * 0.89 * 0.72

                            ≈ 0.578904

2. Calculate the probability of the system failing:

  P(system failing) = 1 - P(all components working)

                    = 1 - 0.578904

                    ≈ 0.421096

Therefore, the probability that the system will fail is approximately 0.421096 or 42.11%.

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Malik's utility from his expected income is 793.0, and his expected utility of income is 818.5. The correct option is B.

To calculate Malik's utility from his expected income, we can use the weighted average of his utility from each possible income, with the probabilities as the weights:
Utility from expected income = (0.20 x 387.3) + (0.80 x 894.4) = 793.0
Finally, we can calculate Malik's expected utility of income by applying his utility function to his expected income:
Expected utility of income = √$710,000 = 818.5

First, we need to calculate Malik's expected income. We can do this using the probabilities and the given amounts of income for each outcome:
Expected income = (0.20 x $150,000) + (0.80 x $800,000) = $710,000
Next, we can use Malik's utility function to calculate his utility from each possible income:
Utility from $150,000 = √$150,000 = 387.3
Utility from $800,000 = √$800,000 = 894.4

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Using the logarithm quotient rule, it can be simplified to log1 - logA. Since log1 = 0 for any base, this simplifies further to -logA.

We simplify and solve the given expressions using the mentioned terms. Here are the step-by-step explanations for each expression:

1. logA: This expression represents the logarithm of a number A to a specified base. Without any base provided, it cannot be simplified further.

2. 1logAA: Since the coefficient of the logarithm is 1, this simplifies to logAA, which represents the logarithm of A to the base A. By definition, logAA = 1.

3. logA x Blog (a/b): This expression seems to have formatting issues, so I'll break it down into two separate expressions: - logA x B: This represents the logarithm of the product AB to a specified base. Using the logarithm product rule, it can be simplified to logA + logB. - log (a/b): This represents the logarithm of the quotient a/b to a specified base. Using the logarithm quotient rule, it can be simplified to loga - logb.

4. log A ^ B: This expression represents the logarithm of A raised to the power of B to a specified base. Using the logarithm power rule, it can be simplified to B * logA. 5. log 1/A: This expression represents the logarithm of the reciprocal of A (1/A) to a specified base.

Using the logarithm quotient rule, it can be simplified to log1 - logA. Since log1 = 0 for any base, this simplifies further to -logA.

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The surface with the given vector equation, r(s, t) = (s cos(t), s sin(t), s), is a circular cone.

The vector equation r(s, t) = (s cos(t), s sin(t), s) represents a surface in three-dimensional space. Let's analyze the equation to determine the nature of the surface.

In the equation, we have three components: s, cos(t), and sin(t). The presence of s indicates that the surface expands or contracts radially from a central point. The trigonometric functions cos(t) and sin(t) determine the angle at which the surface extends in the x and y directions.

By observing the equation closely, we can see that as s increases, the radius of the surface expands uniformly in all directions, while the height remains constant. This behavior is characteristic of a circular cone. The circular base of the cone is defined by s cos(t) and s sin(t), and the vertical component is determined by s.

Therefore, the surface described by the vector equation r(s, t) = (s cos(t), s sin(t), s) is a circular cone.

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Answer:

I think 144.44 is the answer

Answer:

58.4

Step-by-step explanation:

To find the circumference of a circle, multiply the diameter by pi.

\(circumference=\pi d\)

In this case, the diameter is 18.6, and 3.14 is the substitute for pi.

\(18.6*3.14=58.404\)

\(58.404\) ≈ \(58.4\) (nearest tenth).