pls need help ASAP. will give brainliest. ​

Answer:

B. 0.07

Step-by-step explanation:

This is a hypothesis test for a proportion.

The claim is that the proportion of convicted drug pushers is significnalty higher than 20%.

Then, the null and alternative hypothesis are:

\(H_0: \pi=0.2\\\\H_a:\pi>0.2\)

The sample has a size n=144.

The sample proportion is p=0.25.

\(p=X/n=36/144=0.25\)

The standard error of the proportion is:

\(\sigma_p=\sqrt{\dfrac{\pi(1-\pi)}{n}}=\sqrt{\dfrac{0.2*0.8}{144}}\\\\\\ \sigma_p=\sqrt{0.001111}=0.0333\)

Then, we can calculate the z-statistic as:

\(z=\dfrac{p-\pi}=\dfrac{0.25-0.2}{0.0333}=\dfrac{0.05}{0.0333}=1.5\)

This test is a right-tailed test, so the P-value for this test is calculated as:

\(\text{P-value}=P(z>1.5)=0.066\approx0.07\)

Answer: 919 seconds in 15 minutes and 19 seconds

Step-by-step explanation:

60 x 15 = 900

900 + 19 = 919

Answer:

The answer is "\(\bold{\frac{6}{10}}\)"

Step-by-step explanation:

\(\to p(\frac{\text{Market is falling}}{\text{The expected demand is fall Don}}) =1\\\\\to p(\frac{\text{Market is falling}}{\text{The expected demand is rising Don}}) =0.6\)

That's why the answer is \(\to \frac{6}{10}\)

Answer:

B

Step-by-step explanation:

Angle ABD is congruent to angle CBD--->Definition of perpendicular lines

Segment DB is congruent to Segment Db--->Reflextive property of congruence

Angle ADB is congruent to angle CDB--->angle bisector theorem

2 angles and 1 side is congruent, therefore the triangles are congruent by the ASA Congruence Theorem

Answer:

A.1/3

Step-by-step explanation:

on the picture

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The value of the expression x² + 10x, when x = 2 is 24.

In the expression x² + 10x, x represents a variable, which is a placeholder for a value that can change. We are given that x = 2, which means we substitute 2 for x in the expression:

x² + 10x = 2² + 10(2)

Here, 2² means 2 raised to the power of 2, which is 2 multiplied by itself: 2² = 2 x 2 = 4.

10(2) means 10 multiplied by 2, which is 20.

So we can substitute these values in the expression:

x² + 10x = 2² + 10(2)

= 4 + 20

= 24

Therefore, when x is equal to 2, the value of the expression x² + 10x is 24.

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The complete question:

Evaluate the expression x² + 10x, when x = 2.

Answer:

83.91 kilograms

Step-by-step explanation:

Answer:

Use the given formulas and replace s with its value of 5 inches.

So the volume:

Total surface area:

Step-by-step explanation:

\(volume = {a}^{3} = {5}^{3} = 5 \times 5 \times 5 = 125 {inch}^{3} \\ surface \: area = 6 {a}^{2} \\ = 6 \times {5}^{2} = 6 \times 5 \times 5 \\ = 150 {inch}^{2} \\ thank \: you\)

The sample mean of 4.21 cm is significantly different from the specified target mean of 4.00 cm.

Step 1: State the hypotheses.

- Null Hypothesis (H₀): The mean length of the bolts is 4.00 cm (μ = 4.00).

- Alternative Hypothesis (H₁): The mean length of the bolts is not equal to 4.00 cm (μ ≠ 4.00).

Step 2: Compute the value of the test statistic.

To compute the test statistic, we will use the z-test since the population standard deviation (σ) is known, and the sample size (n) is large (n = 121).

The formula for the z-test statistic is:

z = (X- μ) / (σ / √n)

Where:

X is the sample mean (4.21 cm),

μ is the population mean (4.00 cm),

σ is the population standard deviation (0.83 cm), and

n is the sample size (121).

Plugging in the values, we get:

z = (4.21 - 4.00) / (0.83 / √121)

z = 0.21 / (0.83 / 11)

z = 0.21 / 0.0753

z ≈ 2.79 (rounded to two decimal places)

Step 3: Determine the critical value and make a decision.

With a level of significance of 0.02, we perform a two-tailed test. Since we want to determine if the mean length of the bolts is different from 4.00 cm, we will reject the null hypothesis if the test statistic falls in either tail beyond the critical values.

For a significance level of 0.02, the critical value is approximately ±2.58 (obtained from the z-table).

Since the calculated test statistic (2.79) is greater than the critical value (2.58), we reject the null hypothesis.

Conclusion:

Based on the computed test statistic, there is sufficient evidence to show that the manufacturer needs to recalibrate the machines. The sample mean of 4.21 cm is significantly different from the specified target mean of 4.00 cm, indicating that the machine's output is not meeting the desired length. The manufacturer should take action to recalibrate the machines to ensure the bolts meet the required length of 4.00 cm.

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Answer:

a) \(\frac{d}{10} + \frac{d}{8} = 240\)

b)  approx 1,066.67 feet (3200/3 feet)

Step-by-step explanation:

The bee has been away  for a total of 15 minutes from the hive but since it rested at the flowerbed for 11 minutes, the total travel time is 15-11 = 4 minutes.

Since units are expressed in feet per second, we have to convert 4 minutes to seconds which works out to 240 seconds

The basic equation for distance, d  traveled by an object traveling at speed of s is given by d = st  where t is the time taken to traverse distance d

Alternatively we can write this equation as    

\(t = \frac{d}{s}\)

Travel time from hive to flowerbed at 10 feet/sec =    \(\frac{d}{10}\) seconds

Travel time from flowerbed to hive at 6 feet/sec =  \(\frac{d}{8}\) seconds

Total travel time is the sum of the above and can be expressed by the equation

\(\frac{d}{10} + \frac{d}{8} = 240\)

Multiplying throughout by 40 we can get rid of the denominators. We get

4d + 5d = 240 x 40 = 9600

9d = 9600

d = 9600/9 = 3200/3 feet ≈ 1,066.67 feet

Answer:

An arithmetic sequence with a common difference of −2 is 20,18,16,14,12..

Step-by-step explanation:

An arithmetic sequence is a sequence of numbers in which the difference between consecutive terms is same. Here, the common difference is -2, which means that each term in the sequence is obtained by subtracting 2 from the previous term.

To find the arithmetic sequence with a common difference of -2, you can start with an first term and then subtract 2 successively to find the subsequent terms.

Let the initial term is 20. Subtracting 2 from 20, we get 18. Subtracting 2 from 18, we get 16. Continuing this pattern, we subtract 2 from each subsequent term to generate the sequence. The arithmetic sequence with a common difference of -2 starting from 20 is

20,18,16,14,12

In this sequence, each term is obtained by subtracting 2 from the previous term, resulting in a common difference of -2.

Answer:

Step-by-step explanation:

\(y=(\frac{1}{g} )x\)

Constant up a proportionally is  \(\frac{1}{g}\).

Answer:

7 groups or teams

Step-by-step explanation:

7 x 4 is 28, as close as we can get to 29.

Answer:

Step-by-step explanation:

Therefore, sin θ = 4/5, csc θ = 5/4, and cot θ = -3/4 using trigonometric ratio.

We know that the point (-3, 4) is on the terminal side of the angle θ, and we can use the Pythagorean theorem to find the value of the hypotenuse:

r² = x² + y²

r² = (-3)² + 4²

r² = 9 + 16

r² = 25

r = 5

Now we can find the values of sin θ, csc θ, and cot θ:

sin θ = y/r = 4/5

csc θ = r/y = 5/4

cot θ = x/y = -3/4

Therefore, sin θ = 4/5, csc θ = 5/4, and cot θ = -3/4.

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The correct statement that F: "I agree. The ratios of consecutive x-values are constant, and the y-values are increasing at a constant rate."

To determine whether the function shown in the table is exponential, we need to analyze the relationship between the x-values and y-values.

The table shows x-values that are increasing by a power of 2 (1, 2, 4, 8, 16, 32, 64) and y-values that are increasing by a constant rate of 1 (0, 1, 2, 3, 4, 5, 6).

The constant ratio between consecutive x-values indicates exponential growth or decay.

In this case, the function is growing exponentially because the y-values are increasing at a constant rate.

Based on this information, we can conclude that the function is exponential.

Therefore, we agree with statement F: "I agree. The ratios of consecutive x-values are constant, and the y-values are increasing at a constant rate."

The other statements are incorrect because they do not accurately describe the relationship between the x-values and y-values in an exponential function.

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Answer:

I don't know what are you saying bro

Answer:

Step-by-step explanation:

Answer: C /-6

Step-by-step explanation:

Answer:

17.1

Step-by-step explanation:

Find the perimeter by adding the perimeter of the three sides of the trapezoid to the perimeter of the half circle.

(4+6+4)+(2pi/2)=14+3.14=17.14

Round to 17.1

The component form of the following vectors is Option A. V = (38.3, 32.1).

To find the component form of a vector given its magnitude and direction angle, we can use trigonometry.

The component form of a vector in two dimensions is represented as (x, y), where x is the horizontal component and y is the vertical component.

In this case, the magnitude of the vector is given as 50, and the direction angle θ is 50°. We can use this information to calculate the horizontal and vertical components.

The horizontal component (x) can be found using the formula x = magnitude * cos(θ), and the vertical component (y) can be found using y = magnitude * sin(θ).

Let's calculate the components:

x = 50 * cos(50°) ≈ 38.3

y = 50 * sin(50°) ≈ 32.1

Rounding the answers to the nearest tenth, we get the component form of the vector V as (38.3, 32.1).

Therefore, the correct answer is A. V = (38.3, 32.1).

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The question is incomplete. Find the full content below:

Find the component form of the following vectors. Round your answers to the tenth.

Magnitude of v = 50, direction angle θ = 50°

A. V = (38.3, 32.1)

B. V = (33.8, 31.2)

C. V = (32.1, 38.3)

D. V = (31.2, 33.8)

Answer:

The formula to find the value of the side is X ^ 3 = 10, and the side measures 2.15 cm.

Step-by-step explanation:

Given that a Rubik's Cube has a volume of 10 cm, to write an equation to find the length of the sides and find the length of the side to the nearest tenth, the following calculations must be performed, knowing that the volume of a cube is obtained to enhance one of its sides to the third:

X ^ 3 = 10

X = 3√ 10

X = 2.15

Thus, the formula to find the value of the side is X ^ 3 = 10, and the side measures 2.15 cm.

Answer:

56/5 or 11 1/5

Step-by-step explanation:

Convert 1 3/5 to an improper fraction

1 3/5 = (1 x 5 + 3)/5 = (5 + 3)/5 = 8/5

7 x  1 3/5  = 7 x 8/5 = 56/5

In mixed fraction, 56/5 = 11 1/5

Answer:

77

Step-by-step explanation:

There are 415 third graders and 338 second grades the question is asking how many more third graders are there than second graders, so its asking for the difference between them:

415 - 338 = 77

There are 77 more third graders than second graders

Answer:

a × 12 = 3

4 times 3= 12

so a = 4

Answer:

It will take Mr. Martin 4 hours to walk the trail, and Luke should walk faster than Mr. Martin. Using the equation 12 = (3)(x), Luke should walk 4 km/hr to finish the trail in 3 hours.

Step-by-step explanation:

Answer:

a) r(t) = (10, 5, -5) + (5, 5, 0)*t

b) (0, -5, -5)

Step-by-step explanation:

a) 2x + 4 -2y -5 = -3z -6

2x - 2y +3z +5 =0

(10, 5, -5)

(15, 10, -5)

(5, 5, 0)

r = (10, 5, -5) + (5, 5, 0)*t

b) The yz plane is given by the equation x = 0.

x = 0  in the vector equation of a straight line if and only if  t = -2, than r ( - 2) = (0, -5, -5) is the desired intersection point.

All three equations represent the relationship between the total number of something produced and the amount of time it takes to produce it.

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The sum of \(1\frac{3}{10} +\frac{1}{4}\) is \(\frac{31}{20}\).

According to the question,

We have the following information:

\(1\frac{3}{10} +\frac{1}{4}\)

Now, we will first convert the mixed fraction into proper or improper fraction.

\(1\frac{3}{10} = \frac{13}{10}\)

Now, we will add these fractions:

\(\frac{13}{10} +\frac{1}{4}\)

Now, these fractions can only be added when their denominator is the same. It can be possible only when we take the least common factor of 10 and 4 which is 20 and add the fractions:

(13*2+1*5)/20

(26+5)/20

31/20

Now, this is the simplest form of this fraction because the numerator and denominator can not be divided by the same number.

Hence, the sum of the given expression is \(\frac{31}{20}\).

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Answer:

y = 25x + 200

Step-by-step explanation:

y =  the total cost of the party

x = the number of guests

75/3 = 25

25 is the cost per guest.

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