need help please cant fail​

The distance AB across the river is 417.04 m when BC = 351 m, B = 112°10′ and C = 17°15′ across the river. Hence, the correct answer is AB = 417.04m.

We are given that BC = 351 m, B = 112°10′ and C = 17°15′.

We need to find the distance AB across the river, given that angle BAC = 90°.

To find AB, we will use the sine rule.

According to the sine rule,

AB / sin ∠BAC = BC / sin ∠BCA

Substituting the given values, we get,

AB / sin 90° = 351 / sin (112°10′ + 17°15′)

We know that sin 90° = 1 and sin (112°10′ + 17°15′) = sin 129°25′

So,

AB = 351 / sin 129°25′ = 351 / 0.8413

AB = 417.04 m

Therefore, the distance AB across the river is 417.04 m when BC = 351 m, B = 112°10′ and C = 17°15′ across the river. Hence, the correct answer is AB = 417.04m.

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Answer: fourth

Step-by-step explanation: the terminal ray of a 300 angle lies in the FOURTH quarter.

This angle measures (5/3) radians.

Answer:

-fourth

-5/3pi

Step-by-step explanation:

a) The probability of having less than 3 breakdowns during the next three months is approximately 0.6767.

To find the probability of having less than 3 breakdowns during the next three months, we can use the Poisson distribution formula:

P(X < 3) = e^(-λ) * (λ^0/0!) + e^(-λ) * (λ^1/1!) + e^(-λ) * (λ^2/2!)

Here, λ is the mean number of breakdowns per month, which is 2.

Substituting the value of λ into the formula, we have:

P(X < 3) = e^(-2) * (2^0/0!) + e^(-2) * (2^1/1!) + e^(-2) * (2^2/2!)

Calculating each term:

P(X < 3) = 0.1353 + 0.2707 + 0.2707 = 0.6767

b) The probability that 8 out of the 10 machines will not be used during the next two months is approximately 0.000128.

If each machine works independently and there are 10 machines, we can consider the probability for each machine not being used (having more than 4 breakdowns in two months) and then multiply those probabilities together.

The probability of a single machine not being used is:

P(not used) = P(X > 4)

Using the Poisson distribution formula with a mean of 2 breakdowns per month:

P(not used) = 1 - [P(X ≤ 4)]

P(not used) = 1 - [e^(-2) * (2^0/0!) + e^(-2) * (2^1/1!) + e^(-2) * (2^2/2!) + e^(-2) * (2^3/3!) + e^(-2) * (2^4/4!)]

Calculating this probability, we find:

P(not used) = 0.1429

The probability that 8 out of 10 machines will not be used is calculated by raising the probability of a single machine not being used to the power of 8 (since each machine's status is independent):

P(8 out of 10 not used) = (P(not used))^8

P(8 out of 10 not used) = (0.1429)^8

Calculating this probability, we get:

P(8 out of 10 not used) = 0.000128

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Answer:

s = 3.75

Step-by-step explanation:

Let b = price of a burger

Let s = price of a side item

2b+s = 14.75

3b+2s = 24

Multiply the first equation by -2

-4b-2s =-29.50

Add to the second equation to eliminate s

-4b-2s =-29.50

3b+2s = 24

---------------------

-b = -5.50

Multiply by -1

b = 5.50

Now find s

2b+s = 14.75

2*5.50 +s =14.75

11 + s = 14.75

Subtract 11 from each side

s = 14.75 -11

s = 3.75

To calculate the sample proportion of "first quality" widgets, we divide the number of "first quality" widgets by the total sample size. In this case, out of a random sample of 64 widgets, 48 are classified as "first quality." Therefore, the sample proportion of "first quality" widgets can be calculated as:

Sample Proportion = Number of "First Quality" Widgets / Total Sample Size Sample Proportion = 48 / 64 Sample Proportion = 0.75 So, the sample proportion of "first quality" widgets is 0.75. To calculate the standard error of the proportion, we use the formula: Standard Error = √((Population Proportion * (1 - Population Proportion)) / Sample Size) In this case, the population proportion is given as 0.70 and the sample size is 64. Plugging in these values, the standard error of the proportion can be calculated as: Standard Error = √((0.70 * (1 - 0.70)) / 64) Standard Error ≈ 0.0427 Therefore, the standard error of the proportion is approximately 0.0427.

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Answer:

Anna

Step-by-step explanation:

Hers grew 2.5 inches each time

Answer:

It's 60 degrees. if you look carefully at the image, there is 2 angles. it can't be 93 since it is way too narrow.

Step-by-step explanation:

I'm on the question on edge, ill keep you updated if it's wrong.

update: it was correct. hope this helped!

Based on the alternate interior angle theorem, the measure of angle 2 in the diagram given is: C. 60°

The alternate interior angle theorem states that the measure of two alternate interior angles are congruent.

Angle 2 and 60° are alternate interior angles, therefore:

Angle 2 = 60° [alternate interior angle theorem].

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Answer: C) (1,-3)

Step-by-step explanation:

Just plug in the values for x and y

for choice c:

y<3x+1

-3<3(1)+1

-3<3+1

-3<4 and this is true

The ordered pair which is a solution of the given inequality is (1, -3). Therefore, option C is the correct answer.

The given inequality is y<3x + 1.

Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

Here,

Option A:

Put (-3, -2) in the inequality y<3x + 1 and check, we get

-2<3(-3)+1

= -2<-8 which is not true.

Option B:

Put (3, 14) in the inequality y<3x + 1 and check, we get

14<3(3)+1

= 14<10 which is not true.

Option C:

Put (1, -3) in the inequality y<3x + 1 and check, we get

-3<3(1)+1

= -3<4 which is true.

Option D:

Put (1, 6) in the inequality y<3x + 1 and check, we get

6<3(1)+1

= 6<4 which is not true.

The ordered pair which is a solution of the given inequality is (1, -3). Therefore, option C is the correct answer.

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a) The probability that three or fewer women would be hired is approximately 0.1719, or 17.19%. b) P(0 women) + P(2 women) + P(4 women) + P(6 women) + P(8 women) + P(10 women) c)c) The fact that fewer women were hired compared to men does not necessarily indicate evidence of discrimination.

a) The probability that three or fewer women would be hired can be calculated using the binomial distribution. Since we expect all applicants to be similarly qualified and the probability of hiring any individual is the same, we can assume a probability of success (p) of 0.5 (equal chance for men and women) and a total of ten trials (job openings). Using the binomial distribution formula, we can sum the probabilities of hiring 0, 1, 2, and 3 women:

P(X ≤ 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)

        = C(10, 0) * (0.5)^0 * (0.5)^10 + C(10, 1) * (0.5)^1 * (0.5)^9 + C(10, 2) * (0.5)^2 * (0.5)^8 + C(10, 3) * (0.5)^3 * (0.5)^7

Calculating these probabilities yields:

P(X ≤ 3) ≈ 0.1719

Therefore, the probability that three or fewer women would be hired is approximately 0.1719, or 17.19%.

b) The chance that exactly an even number of men and women are hired can also be calculated using the binomial distribution. In this case, we want to find the probabilities of hiring 0, 2, 4, 6, 8, or 10 women (an even number) and the corresponding number of men.

P(0 women) + P(2 women) + P(4 women) + P(6 women) + P(8 women) + P(10 women) Calculating these probabilities will give us the chance that an even number of men and women are hired.

c) The fact that fewer women were hired compared to men does not necessarily indicate evidence of discrimination. The probability calculations in parts a) and b) assume that all applicants are similarly qualified and that the probability of hiring any individual is equal. Therefore, differences in the number of women hired could be due to random chance rather than discrimination. To determine if there is evidence of discrimination, further analysis and consideration of other factors would be needed. It would be important to examine the hiring process, criteria used for selection, and any potential biases or barriers that could affect the hiring outcomes. Additionally, analyzing the data over a longer period of time or comparing it to external benchmarks could provide more insight into any potential discriminatory practices.

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Answer:

Step-by-step explanation:

Formula for linear velocity

Converting the angle measure from degrees to radians

Substituting values

Answer:

Try doing the ratio

Step-by-step explanation:

like it would be -15 to 20

Answer:

None of the provided choices accurately represents the probability that the area of the rectangle is more than 1/2.

Step-by-step explanation:

To find the probability that the area of the rectangle is more than 1/2, we need to consider the possible combinations of lengths for the adjacent sides of the rectangle. Since the sides are chosen from independent and identically distributed uniform distributions over the interval [0, 1], we can think of it as randomly selecting two numbers from the interval [0, 1] to represent the lengths of the sides.

The area of a rectangle is given by the product of its length and width. Let's assume that the length of the rectangle is represented by X and the width by Y. To calculate the probability that the area is more than 1/2, we can find the probability that X * Y > 1/2.

Since X and Y are uniformly distributed over the interval [0, 1], their joint probability density function is f(x, y) = 1 for 0 ≤ x, y ≤ 1.

To find the desired probability, we need to integrate the joint density function over the region where X * Y > 1/2.

Integrating the joint density function over this region will give us the probability of interest. However, the calculation involves solving a double integral, which is beyond the scope of a simple multiple-choice answer format.

Therefore, none of the provided choices accurately represents the probability that the area of the rectangle is more than 1/2.

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Answer:

34

Step-by-step explanation:

Step 1:

Length + Length + Width + Width = Perimeter

Step 2:

7 + 7 + 10 + 10             Equation

Step 3:

14 + 20        Add

Answer:

34

Hope This Helps :)

Answer:

A:y+6= -5(x-2)

C:y= -5x+4

Step-by-step explanation:

To determine the unit requirements for producing A and C from D and E, the problem provides a product structure and inventory information. The number of units of D needed to make one unit of A is not explicitly given. However, it can be inferred by analyzing the product structure and inventory quantities. The number of units of D needed to make one unit of C is also not directly specified. However, by examining the product structure, we can determine the relationship between C and D. Finally, to produce 10 units of A, the number of units of E required can be calculated based on the given inventory levels and the product structure.

a) the number of units of D required to make one unit of A is not explicitly stated. The given information provides a product structure that includes A, B, D, E, and C. To determine the unit requirements for A, it would be necessary to examine the specific relationship between A and D. However, without this information, the exact number of units of D needed for one unit of A cannot be determined.
b) similarly, the number of units of D required to make one unit of C is not explicitly given in the problem statement. To determine this relationship, the product structure needs to be examined more closely. The information provided suggests that C is connected to D through E. However, the exact quantity of D required to produce one unit of C cannot be determined without additional information.
c) To calculate the number of units of E needed to produce 10 units of A, we can analyze the given inventory levels and product structure. The problem states that there are 5 units of D available. To produce A, we require B and E. However, the number of units of B available is not specified. Considering the product structure, it is indicated that each unit of A requires 2 units of B and 2 units of E. Thus, to produce 10 units of A, we would need 20 units of B and 20 units of E. However, since the availability of B is unknown, the exact number of units of E needed cannot be determined with the given information.

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Answer:

[tex] \frac{7}{6} or \: 1 \frac{1}{6} [/tex]

Answer:

2.5 million

Step-by-step explanation:

Given that :

Population in 2003 = 10.5 million

Population in 2003 = 3 million + (3 * population in 1950)

Hence from both expressions :

Let population in 1950 = p

3,000,000 + (3 * p) = 10,500,000

3,000,000 + 3p = 10,500,000

3p = 10,500,000 - 3,000,000

3p = 7,500,000

p = 7,500,000 / 3

p = 2,500,000

Hence, population in 1950 is 2.5 million

we need to find the values of sin(10°) and cos(10°) to compute sin(20°).

To find the value of sin 20°, we can use the trigonometric identity sin(2θ) = 2sin(θ)cos(θ).

Given sin(θ) = √3/2 and 0° < θ < 90°, we can find the value of sin 20° as follows:

sin(20°) = 2sin(10°)cos(10°)

We need to find the values of sin(10°) and cos(10°) to compute sin(20°).

Given cos(θ) = -√2/2 and -π/2 < θ < 0, we can find the value of sin 20° as follows:

sin(20°) = 2sin(10°)cos(10°)

Similarly, we need to find the values of sin(10°) and cos(10°) to compute sin(20°).

Since you provided conflicting information for the values of sin 0 and cos 0, it is not possible to determine the value of sin 20° without accurate values for sin 0 and cos 0. Please provide the correct values, and I will be happy to help you further.

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Answer:

x= -2 y= -5

Step-by-step explanation:

X+y=-7

x+-y-7

-5(-y-7)+y=5

5y+35+y=5

6y+35=5

6y=5-s5

6y=-30

y=-5

-5x+(-5)=5

-5x=5+5

-5x=10

x=-2

Answer:

more than 200 calls

Step-by-step explanation:

Suppose number of calls = x

According to plan 1: Total monthly charge is $24

According to plan 2: Fix charge is $16 and $0.04 per call

cost of x's call = $0.04x

and monthly charge according to plan 2 = 0.04x + 16

a)  Plan 1 is more economical than plan 2.

0.04x + 16 > 24

solve it for x

.04x > 8

x > 200

b)   So,  if more than 200 calls are made then Plan 1 is more economical.

A) The triangles that are similar to AED are:

DCE

EBA

AFE

EFD

B) The value of the side FA is: 14.92 units

A) Triangular AED:

D = 53° (alternating interior angles)

A = 180 - 90 - 53 = 37° (Sum of angles in a triangle)

AA Similarity Criterion

DCE is similar to AED

Angle BEA = 180 - 90 - 53 = 37° =  angle A for triangle AED

Therefore:

Using AA similarity criteria:

EBA is similar to AED

Diagonals of a parallelogram (here: rectangle) cut into two congruent triangles

Therefore:

EBA matches AFE

EBA matches AFE, DCE and matches EFD

Congruent triangles are similar

Conclusion:

DCE is similar to AED

EBA is similar to AED

AFE is similar to AED

EFDs are similar to AEDs 

B) Using Pythagoras theorem:

DF = √(20² - 16²)

DF = 12

Using trigonometric ratios:

EF/FA = tan 47

FA = 16/tan 47

FA = 14.92 units

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Answer:

a = 26

Step-by-step explanation:

Solve for a:

22 = a - 4

Hint: | Reverse the equality in 22 = a - 4 in order to isolate a to the left-hand side.

22 = a - 4 is equivalent to a - 4 = 22:

a - 4 = 22

Hint: | Isolate terms with a to the left-hand side.

Add 4 to both sides:

a + (4 - 4) = 4 + 22

Hint: | Look for the difference of two identical terms.

4 - 4 = 0:

a = 22 + 4

Hint: | Evaluate 22 + 4.

22 + 4 = 26:

Answer: a = 26

Answer:

a = 26

Step-by-step explanation:

22 = a - 4 Is your starting equation.

First you have to flip the equation which means your equation should now be:

a - 4 = 22

Then add 4 to both sides, which would look like this,

a - 4 + 4 = 22 + 4

After you do that your final answer is

a = 26

Answer:

=4/5

Step-by-step explanation: have a nice day!

Answer:

80%

cuz i said so. and google. google's great. :)

Answer:

I think it is 55

Answer: A equals -2

Step-by-step explanation:

First, start off by replacing x with -4.

Then add 4 to -4 and -8.

Afterwards, you should be left with 2A = -4. Then divide 2A and -4 by 2

Your answer should be “A = -2”

Hope this helps :)

Answer: 28

Step-by-step explanation:

The reason being you can put 420 in the calculator and divide that by the amount of students in Terrys class

Answer:

[tex]-\frac{15}{7}[/tex]

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Answer:

it should be -[tex]\frac{15}{7}[/tex]

Step-by-step explanation:

Answer:

The thousandth goes past the decimal point 3 places.

This would be the first option, i.e. 22.524 :)