Solve for x . Round to the nearest tenth.
BC=39

Answer:

I´m not an expert but I´ll look at it :3

Step-by-step explanation:

After executing the given code, the final values of s and t are s = 19 andt = 39

The values of s and t can be determined by evaluating the given code step by step:

Initialize the variable s with a value of 20: int s = 20;

Now, s = 20.

Evaluate the expression s++ + --s:

a. s++ is a post-increment operation, which means the value of s is used first and then incremented.

Since s is currently 20, the value of s++ is 20.

b. --s is a pre-decrement operation, which means the value of s is decremented first and then used.

After the decrement, s becomes 19.

c. Adding the values obtained in steps (a) and (b): 20 + 19 = 39.

Assign the result of the expression to the variable t: int t = 39;

Now, t = 39.

After executing the given code, the final values of s and t are:

s = 19

t = 39

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The lower limit of the 95% confidence interval for the proportion of all X-ray machines that malfunction is [lower_limit]. The upper limit of the 95% confidence interval for the proportion of all X-ray machines that malfunction is [upper_limit].

To calculate the confidence interval, we can use the formula for proportion confidence interval:

Confidence Interval = Sample Proportion ± Margin of Error

The sample proportion is the proportion of machines in the sample that malfunctioned. Let's denote this proportion as p.

The margin of error can be calculated using the formula:

Margin of Error = Z ×√[(p × (1 - p)) / n]

Where Z is the critical value corresponding to the desired confidence level, p is the sample proportion, and n is the sample size.

This is a 95% confidence interval, the critical value Z is approximately 1.96 (obtained from the standard normal distribution).

Once we have the sample proportion and the margin of error, we can calculate the lower and upper limits of the confidence interval as:

Lower Limit = p - Margin of Error

Upper Limit = p + Margin of Error

Please note that the exact values for p and the sample size (n) are not provided in the question, so it is not possible to calculate the confidence interval without that information.

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Answer:

33

Step-by-step explanation:

70% of 47 is 33 species

Answer:

32.9

Step-by-step explanation:

The simplified expression is: \(a^{(-14/3)} \times b^{(14/3)\)

Given is an expression, \((a^{(-1)} b^{(1/3)} \times a^{(-4/3)} b^2)^2\), we need to simplify the expression,

To simplify the expression, let's break it down step by step:

The given expression is:

\((a^{(-1)} b^{(1/3)} \times a^{(-4/3)} b^2)^2\)

First, let's simplify the exponents inside the parentheses:

\((a^{(-1)} b^{(1/3)} \times a^{(-4/3)} b^2)^2\) = \(a^{[(-1) + (-4/3)]} \times b^{[(1/3) + 2]}\)

= \(a^{(-7/3)} \times b^{(7/3)\)

Now, let's square this simplified expression:

\([a^{(-7/3)} \times b^{(7/3)]^2\) = \(a^{(-7/3)^2} \times b^{(7/3)^2\)

= \(a^{(-14/3)} \times b^{(14/3)\)

Therefore, the simplified expression is: \(a^{(-14/3)} \times b^{(14/3)\)

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The integer in the solution set will make the equation true is 7.

The integer is a whole number which can be negative or positive or zero, they are written in fraction formate.

Given is an equation, 6x − 8 = 2(2x + 3)

Checking for x = -2, we get,

LHS = -2x6 - 8 = -12-8 = -20

RHS = 2(-2x3+3) = 2(-4+3) = 2x-1 = -2

LHS ≠ RHS

Checking for x = 0, we get,

LHS = 6x0-8 = -8

RHS = 2(2x0+3) = 2x3 = 6

LHS ≠ RHS

Checking for x = 7, we get,

LHS = 6x7-8 = 42-8 = 34

RHS = 2(2x7+3) = 2x17 = 34

LHS = RHS

Therefore, when x =7, both the expressions are equal.

Hence, the equation is true for the x =7

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Answer:

The two restrictions that we have for x are:

x < -2

x > -0.5

Step-by-step explanation:

In part 3 we want to solve:

-5 < f(x) < 1

But we don't know the actual equation of f(x), we have only the graph, so let's work with that.

So with the graph, let's find the allowed values of x.

First, let's see the possible values of x such that:

-5 < f(x)

in the graph, we can see that:

f(-2) = -5

And as x decreases we will have:

f(x) > -5

So here we found one restriction for x, if we want:

f(x) > -5, then we must have x < - 2

Now let's find the other case, where:

f(x) > 1

Again, in the graph we can see that:

f(-0.5) = 1

And as x increases, the value of f(x) decreases.

so if x > -0.5

f(x) < 1.

Then we found another restriction for x:

x > -0.5

The two restrictions that we have for x are:

x < -2

x > -0.5

So if x is a value such that one of these two inequalities is true, then the inequality:

-5 < f(x) < 1

is true.

Answer:

1) 35%.     2) 35

Step-by-step explanation:

1)

x : 100 = 70 : 200

x = 70 * 100 / 200

x = 70/2

x = 35%

2)

70 : 100 = x : 50

x = 50 * 70/ 100

x = 7 * 5

x = 35

Answer:

Step-by-step explanation:  Hello!

I don't remember all of the postulates to these, but I hope this will help you! Vertical angles are congruent, so both angles SRT and PRQ are congruent.  This also means that line segments PQ and ST are congruent.  You also know that angles Q and S are congruent which is given.  By the ASA Theorem, when two angles and a side are congruent, then the triangles are congruent.

Answer:

  acute isosceles triangle

Step-by-step explanation:

Two sides are the same length, so the triangle is isosceles.

All angles are acute, so the triangle is an acute triangle.

The triangle is an acute isosceles triangle.

Answer:

Step-by-step explanation:

The mean and standard deviation of two surveys do not give enough information to determine which statement is true. To compare the two surveys and determine which is true, you would need additional information such as the sample sizes, the confidence intervals for the means, and/or a hypothesis test comparing the means of the two surveys.

The height of the arch at a distance of 10 and 50 feet from the center of the bridge is the same.

Given that a bridge is built in the shape of a parabolic arch. The bridge has a span of s = 140 feet and a maximum height of h = 20 feet.

To find the height of the arch at distances of 10, 30, and 50 feet from the center, we need to follow the below steps:

Choose a suitable rectangular coordinate system, which will be given by the x-axis (horizontal) and the y-axis (vertical) with its origin at the center of the bridge.

Using the vertex form of a parabola:y = a(x - h)² + kWhere a is the stretch factor, h is the horizontal shift of the vertex and k is the vertical shift of the vertex.

For this parabolic arch, the vertex is located at the center of the bridge (70,20).

Hence, the equation becomes:y = a(x - 70)² + 20.

Here, the value of a can be obtained using the maximum height of the bridge.i.e, 20 = a(70 - 70)² + 20=> a = 1/20.

Therefore, the equation of the parabolic arch is:y = (1/20)(x - 70)² + 20.

Now, substitute the values of x = 10, 30, and 50 into the equation and calculate the height of the arch.a. When x = 10,y = (1/20)(10 - 70)² + 20= 360/20= 18 feetb. When x = 30,y = (1/20)(30 - 70)² + 20= 260/20= 13 feetc.

When x = 50,y = (1/20)(50 - 70)² + 20= 360/20= 18 feet.

Therefore, the height of the arch at distances of 10, 30, and 50 feet from the center are 18 feet, 13 feet, and 18 feet respectively.

Therefore, we can conclude that the height of the arch at a distance of 10 and 50 feet from the center of the bridge is the same. While the height of the arch at 30 feet from the center is smaller than the other two distances. We can also conclude that the arch is symmetrical since the height at 10 and 50 feet from the center is the same and the center of the bridge is also the vertex of the parabola.

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The simplification of the given expression would be = 6

60 minutes = 1 hour

But 0.1 of 60 minutes simply means the quantity of 60 minutes that is 0.1.

This can be calculated through the multiplication of 0.1 by 60 minutes.

That is;

= 0.1 ×60 = 6.

Therefore, the the quantity of 60 minutes that is 0.1 = 6.

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Answer:

Q= (-2,-2) P=(-6,-4) R=(-6,-2) S=(-6,-6)

Step-by-step explanation:

For part a, we need to substitute 9 for x.

g(x) = 5 - 2/3(9). Simplify the right side of the equation.

g(x) = 5 - 6.

g(x) = -1

For part b, we need to solve for x by substituting 7 for g(x).

7 = 5 - 2/3x. Subtract 5 from both sides.

2 = -2/3x. Divide each side by -2/3.

-3 = x

Answer:

(0,6)

Step-by-step explanation:

The y intercept is where the line crosses the y axis or the coordinate where x = 0.

Here, when x is equal to 0, y is equal to 6 meaning that the y intercept is at (0,6)

Answer:

f^-1 (x)=sqrt(x/3), -sqrt(x/3).

Step-by-step explanation:

f(x)=3x^2

y=3x^2

x=3y^2

y^2=x/3

y=sqrt(x/3), -sqrt(x/3).

Answer:

\(y=3x^2\)

\(y=3x^2\)

Step-by-step explanation:

There is no step-by-step explanation because it's a graph. Well, it's how I did it. Therefore, the graph in the picture that I'm about to post will be your answer.

Answer is y = -1.01x + 38.19

The formula for calculating the regression line is:

y = a + bx

To find the regression line, we need to calculate two coefficients. They are a and b. where,

b = (NΣxy - ΣxΣy) / (NΣx2 - (Σx)2)and a = y - bx

Here, N = 14N = number of data sets

x = the independent variable

y = the dependent variable

Σ = summationx2 = square of x, i.e., x multiplied by itself

xy = x multiplied by y

Here, x and y have already been given. Thus, we need to calculate the remaining terms for determining the values of a and b.

The following table shows the steps for finding the values of a and b:-

x y x² xy5 26.25 25 131.256 22.3 36 133.87 22.75 49 176.175 22 25 1749 22.35 81 200.1510 19.8 100 19811 17.75 121 194.2512 16.8 144 201.613 17.75 169 299.75514 16.3 196 263.89515 15.95 225 359.2516 13.6 256 219.52Σx = 155 Σy = 255.95Σx² = 2870 Σxy = 4391.81

Now, we can calculate the value of b as:

b = (NΣxy - ΣxΣy) / (NΣx² - (Σx)²)b = (14 x 4391.81 - 155 x 255.95) / (14 x 2870 - 155²)b = -1.0146Next, we can calculate the value of a as:

a = y - bx

a = (Σy / N) - b (Σx / N)a = (255.95 / 14) - (-1.0146 x 155 / 14)a = 38.1921

Thus, the equation of the regression line is:

y = -1.01x + 38.19

The values are rounded off to two decimal places.

Answer:

y = -1.01x + 38.19

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Answer:

6+x

Step-by-step explanation:

An expression is a set of operations without an equal sign. This question is asking which operation is being performed. The question states that there should be six more than x, this means 6 is being added to x. So, addition should be used to make the expression.

Answer:

\(x=23\)

Step-by-step explanation:

\(x-6=17\)

\(x-6+6=17+6\) ( Add 6 to both sides)

\(x=23\)

Now we have to,

→ find the required value of x.

Given equation,

→ x - 6 = 17

Let's solve the equation,

→ x - 6 = 17

→ x = 17 + 6

→ [ x = 23 ]

Hence, the value of x is 23.

For a standard deck of 52 cards, the required probabilities are:

a) P(drawing a Jack) = 0.005

b) P(drawing a Seven given that a Jack has already been removed) =  0.078

c) P(drawing a Jack and then a Seven) = 0.006

For given question,

We have been given two cards are drawn at random from a standard deck of 52 cards, without replacement.

We need to find the required probabilities.

We know that the probabilities are used to determine the chances of an event.

Formula of the probability of an event A is:

P(A) = n(A)/n(S)

where,  n(A) is the number of favorable outcomes, n(S) is the total number of events in the sample space.

Here, n(S) = 52

(a) When two cards are drawn at random, we need to find the P(drawing a Jack)

In a standard deck of 52 cards, there are  4 jacks.

⇒ P(J) = 4/52

After removing a one Jack card there would be 51 cards in a deck.

So, the probability of drawing two Jack cards without replacement would be,

⇒ P(JJ) = 4/52 × 3/51

⇒ P(JJ) = 1/221

⇒ P(JJ) = 0.005

So, P(drawing a Jack) = 0.005

(b)  When two cards are drawn at random, we need to find the probability of drawing a Seven given that a Jack has already been removed.

There are 4 Seven in a standard deck of 52 cards.

Here, Jack has already been removed

So, n(S) = 51

⇒ P(drawing a Seven given that a Jack has already been removed) = 4/51

⇒ P(drawing a Seven given that a Jack has already been removed) = 0.078

(c)  When two cards are drawn at random, we need to find the probability that drawing a Jack and then a Seven.

P(drawing a Jack and then a Seven)

= P(drawing a Jack) × P(drawing a Seven given that a Jack has already been removed)

So, P(drawing a Jack and then a Seven) = 4/52 × 4/51

⇒ P(drawing a Jack and then a Seven) = 1/13 × 4/51

⇒ P(drawing a Jack and then a Seven) = 4/663

⇒ P(drawing a Jack and then a Seven) = 0.006

Therefore, for a standard deck of 52 cards, the required probabilities are:

a) P(drawing a Jack) = 0.005

b) P(drawing a Seven given that a Jack has already been removed) =  0.078

c) P(drawing a Jack and then a Seven) = 0.006

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Answer:

what's the question here if ur asking how long It'll take it's 45

Answer:

heres the answer with work

Answer:

\(\frac{1625z^{10}}{x^5}\)

Step-by-step explanation:

\(\frac{13\cdot \:1\cdot \:x^{-5}}{5^{-3}z^{-10}}\)

\(\frac{13x^{-5}}{\frac{1}{125z^{10}}}\)

\(\frac{\frac{13}{x^5}}{\frac{1}{125z^{10}}}\\\)

\(=\frac{13\cdot \:125z^{10}}{x^5\cdot \:1}\)

refine: \(\frac{13\cdot \:125z^{10}}{x^5}\)

multiply the numbers: 12 x 125 =1625

\(=\frac{1625z^{10}}{x^5}\)

Answer:

multiply the numbers: 12 x 125 =1625

Step-by-step explanation:

So to find any last digit of 3^2011 divide 2011 by 4 which comes to have 3 as remainder. Hence the number in units place is same as digit in units place of number 3^3. Hence answer is 7.

To find which could be the second equation to the system of equations, we insert the x part of the solution (6), if we obtain 2 as result then that equation could be since it has the same solution as the system.

The possible equation to the system is the first since the solution (6,2) belong to the line