HELP GIVING BRAINIEST

1 If angle DAC is 40 degrees how many degrees is Angle ACD. Show all of your work. Show Your work​

Answer:

Step-by-step explanation:

The question is incomplete. Here is the complete question.

A bee flies at 12 feet per second directly to a flowerbed from its hive. The bee stays at the flowerbed for 14 ​minutes, and then flies directly back to the hive at 8 feet per second. It is away from the hive for a total of 18 minutes. A. Write the equation. Let d be the distance of the flowerbed from the hive. B. how far away is the hive from the flower bed.

First we need to calculate the time taken by the bee to fly to a flowerbird to its hive using the formula;

Speed = Distance/Time

Time = Distance/Speed

If a bee flies at 12 feet per second directly to a flowerbed from its hive, then the time taken by the bee is expressed as;

t1 = d/12 ....... 1

If the bee then flies directly back to the hive at 8 feet per second, the time taken by the bird will be:

t2 = d/8 ....... 2

Total time taken by the bee to and fro will be the sum total of both times;

t1+t2 = d/12+d/8

t11+t2 = 2d+3d/24

t1+t2 = 5d/24 ........ 3

If the bee stays at the bee stays at the flowerbed for 14 ​minute and away from the hive for 18minutes, the total time used by the bird during the journey will be 18-14 = 4 minutes

converting 4 minutes to seconds

4 minutes = 4*60 = 240seconds

The equation that can be used to find the distance of the flowerbed from the​ hive is gotten by equating equation 3 to  the total time used by the bird during the journey i.e;

5d/24 = 240

5d = 24*240

5d = 5760

b) To know how far is the flowerbed from the​ hive, we will solve the resulting equation in a for the value of d as shown

Given 5d = 5760

Divide both sides by 5

5d/5 = 5760/5

d = 1152ft

Hence the distance of the flowerbed from the​ hive is 1152ft

Answer: C

Step-by-step explanation:

Since both equations are set equal to y, it follows that

\(x+2=x^2 + 5x+6\\\\x^2 +4x+4=0\\ \\ \\(x+2)^2 = 0\\\\x=-2\\\\\implies y=-2+2=0\)

So, the solution is (-2, 0).

The results obtained using the algebraic approach and the matrix approach should be the same. Both methods are mathematically equivalent and provide the most probable values of A and B that minimize the sum of squared weighted residuals.

To solve the system of equations using the weighted least squares method, we need to minimize the sum of the squared weighted residuals. Let's solve the problem using both the algebraic approach and matrices.

Algebraic Approach:

We have the following equations:

A + 2B = 10.50 + V1 ... (1)

2A - 3B = 5.55 + V2 ... (2)

2A - B = -10.50 + V3 ... (3)

To minimize the sum of squared weighted residuals, we square each equation and multiply them by their respective weights:

\(2^2 * (A + 2B - 10.50 - V1)^2\)

\(3^2 * (2A - 3B - 5.55 - V2)^2\\1^2 * (2A - B + 10.50 + V3)^2\)

Expanding and simplifying these equations, we get:

\(4(A^2 + 4B^2 + 10.50^2 + V1^2 + 2AB - 21A - 42B + 21V1)\\9(4A^2 + 9B^2 + 5.55^2 + V2^2 + 12AB - 33A + 16.65B - 11.1V2)\\(A^2 + B^2 + 10.50^2 + V3^2 + 2AB + 21A - 21B + 21V3)\\\)

Now, let's sum up these equations:

\(4(A^2 + 4B^2 + 10.50^2 + V1^2 + 2AB - 21A - 42B + 21V1) +\\9(4A^2 + 9B^2 + 5.55^2 + V2^2 + 12AB - 33A + 16.65B - 11.1V2) +\\(A^2 + B^2 + 10.50^2 + V3^2 + 2AB + 21A - 21B + 21V3)\int\limits^a_b {x} \, dx\)

Simplifying further, we obtain:

\(14A^2 + 31B^2 + 1113 + 14V1^2 + 33V2^2 + 14V3^2 + 14AB - 231A - 246B + 21V1 - 11.1V2 + 21V3 = 0\)

Now, we have a single equation with two unknowns, A and B. We can use various methods, such as substitution or elimination, to solve for A and B. Once the values of A and B are determined, we can substitute them back into the original equations to find the most probable values of A and B.

Matrix Approach:

We can rewrite the system of equations in matrix form as follows:

| 1 2 | | A | | 10.50 + V1 |

| 2 -3 | | B | = | 5.55 + V2 |

| 2 -1 | | -10.50 + V3 |

Let's denote the coefficient matrix as X, the variable matrix as Y, and the constant matrix as Z. Then the equation becomes:

X * Y = Z

To solve for Y, we can multiply both sides of the equation by the inverse of X:

X^(-1) * (X * Y) = X^(-1) * Z

Y = X^(-1) * Z

By calculating the inverse of X and multiplying it by Z, we can find the values of A and B.

Comparing Results:

The results obtained using the algebraic approach and the matrix approach should be the same. Both methods are mathematically equivalent and provide the most probable values of A and B that minimize the sum of squared weighted residuals.

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Answer:

Yes

Step-by-step explanation; vertical line test!!! have a great day

Answer:

Lets take all factors into consideration first

The door is a rectangle and the area of a rectangle is length times width

Let the width be w

Let the length be l

Equation length × breadth = area

(w+48)w = 3024

w^2 + 48w = 3024

w^2 + 48w - 3024 = 0

w^2 + 84w - 36w - 3024 = 0

w(w + 84) -36 ( w + 84) = 0

(w + 84) (w - 36) = 0

w + 84 = 0 AND w - 36 =0

w = -84 and w = 36

Since width cannot be negative, the right answer is 36

How did I get 84 and 36? Well, I had to factorize 3024 and since 84 times 36 is 3024 and 84 minus 36 is 48, I chose them.

Answer:

El eje horizontal en el plano de coordenadas se llama eje-x. El eje vertical se llama eje-y. El punto en el que los dos ejes se intersectan se llama origen.

Step-by-step explanation:

Answer:

Substitute the value of the variable into the equation and simplify.

866

Step-by-step explanation:

Answer:

bbvfvnjjggfx

ghjjggffcvvvchjvvnbb

El número decimal 1,3 lo expresamos en fracción como 13/10

El inverso de esa fracción es otra fracción pero los números de arriba y abajo se intercambian

→ El inverso de 13/10 es 10/13

Ahora hacemos la suma

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

\( \frac{13\cdot 13+ 10 \cdot 10}{10\cdot 13}\)

\( \frac{169+ 100}{130}\)

\( \boxed{\frac{269}{130}}\)

El valor decimal

\( \boxed{2,0\overline{692307}} \)

Answer:

Anong grade lalaki or babae

The equation of the line in point-slope form and in​ slope-intercept form are both y = 1/2x.

1. Point-Slope Form: y - y1 = m(x - x1), where m is the slope of the line and (x1, y1) is a point on the line.

2. Slope-Intercept Form: y = mx + b, where m is the slope of the line and b is the y-intercept.

3. Standard Form: Ax + By = C, where A and B are coefficients that define the slope and y-intercept of the line.

If a line has a slope of 1/2 and passing through the origin, then:

m = 1/2

(x1, y1) = (0,0)

Plug in the values in the point-slope form and in​ slope-intercept form.

point-slope form

y - y1 = m(x - x1)

y - 0 = 1/2(x - 0)

y = 1/2x

slope-intercept form

y = mx + b

y = 1/2x + b

Substitute the values of x and y and solve for the y-intercept, b.

0 = 1/2(0) + b

b = 0

y = 1/2x + 0

y = 1/2x

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The completed statement are:

Part A:

Angle UZT is congruent to angle TZY.

Using the image attached figure, we can see that:

∠UZT = 54°

∠TZY = 54°

Hence one can say that ∠TZY = ∠UZT are both congruent angles.

Part B:

Angle VZW is congruent to angle YZX.

Using the image attached attached, we can see that:

∠VZW = 71°

∠YZX = 71°

Hence, ∠YZX = ∠VZW are both  regarded as congruent angles .

Therefore, The completed statement are:

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Answer: a, c

Step-by-step explanation:

Answer:

0.94

Step-by-step explanation:

You just divide 47 by 50 and you get 0.94 bam!

Answer:

x = 5,  AB = 5 inches, BC = 15 inches

Step-by-step explanation:

The segment addition postulate states that for line AC having point B between point A and point C, the distances between the point satisfy the equation:

AB + BC = AC

Given that AB = x and BC = 3x, also AC = 20 inches

AB + BC = AC

x + 3x = 20

4x = 20

Dividing through by 4:

4x/4 = 20/4

x = 5

Therefore AB = x = 5 inches, BC = 3x = 3 * 5 = 15 inches

Answer:

18

Step-by-step explanation:

9+(-15)+4+20

9-15+4+20

18 ans

Answer:

$0.87

Step-by-step explanation:

2 quarts = 8 cups

$6.96 ÷ 8 = $0.87

Answer:

0.87 cents

Step-by-step explanation:

The price per cup is 87 cents because 4 cups goes into one quart. Therefore, you have to divide by eight because 2 quarts is $6.96, and you get $0.87. Hope this helps! have a great day!!

Answer:

The = sign

Step-by-step explanation:

\(\frac{7}{8} -\frac{9}{12} =\frac{1}{8}\)

1/8 = 1/8

Answer: =

Step-by-step explanation:

\(\frac{7}{8}-\frac{9}{12} ?\frac{1}{8}\)

We need to find a common denominator for the two

which will be 24

But we need to multiply the numerators as well to change them.

\(\frac{7}{8}(\frac{3}{3})-\frac{9}{12} (\frac{2}{2} )?\frac{1}{8}\\\frac{21}{24}-\frac{18}{24}? \frac{1}{8}\\\frac{3}{24} ?\frac{1}{8}\\Simplify\\\frac{1}{8} =\frac{1}{8}\)

Answer:

The formular for the area of a circle is as follows;

\(area = \pi {r}^{2} \)

r » radius, r is 40 in

[taking π to be 3.14]

substitute:

\(area = (3.14) \times ( {40)}^{2} \\ \\ { \boxed{ \boxed{area = 5024 \: \: in {}^{2} }}}\)

48 is the correct answer

Answer:

i think the 2nd one

Step-by-step explanation:

■. What is asked: It asks us to find out the greatest number of marbles that rey can put equally inside each box.

■. What is it's Solution:

■. Now the Solution Starts:

Things you should know about:

If you find anymore doubts regarding on my answer. then plz send your queries to the comment section. i will help you ;))

Answer:

x = 0.8

Step-by-step explanation:

Answer:

0.8 i think

Step-by-step explanation:

Step 1: So i subtracted 8 from the postive 8 and 7.2

Step 2: Then I got 4x= -0.8 + 5x

Step 3: Now that were left with thart i subtracted 5 from the postive 5x and from the postive 4x

Step 4: I have -1 = -0.8

Step 5: subtract the -1 from the -1 and the -0.8 which will equal... a postive 0.8!

hope this helped and don't remove this pls

The probability of a single birth resulting in a girl if the probability of a single birth resulting in a boy is 51% is 49%

Probability is the measure of the likelihood of an event occurring. The probability of an event occurring ranges from 0 to 1. If an event is impossible, the probability of its occurrence is 0, and if the event is certain to occur, the probability is 1. The probabilities of the complement of an event equal one minus the probability of the event. For instance, the probability of the complement of an event A, denoted as A', is 1 - P(A). If the probability of an event A is P(A), then the probability of the complement of A is 1 - P(A).

Here, the probability of a single birth resulting in a boy is 51%. Therefore, the probability of a single birth resulting in a girl is the complement of this event, which is 49%. Hence, the main answer is that the probability of a single birth resulting in a girl if the probability of a single birth resulting in a boy is 51% is 49%.

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We can calculate acceleration (a) by using the following equation: a = Δv/m.

The equation most likely used to determine the acceleration from a velocity vs. time graph is: a = Δv/m. This equation states that the acceleration (a) is equal to the difference in velocity (Δv) divided by the time (m). To solve this equation, we must find the change in velocity (Δv) and the time (m). To find the Δv, we can subtract the final velocity (V2) from the initial velocity (V1). To find the time (m), we can subtract the final time (t2) from the initial time (t1).

Therefore, we can calculate acceleration (a) by using the following equation: a = Δv/m.

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"Your question is incomplete, probably the complete question/missing part is:"

Which equation is most likely used to determine the acceleration from a velocity vs. time graph?

a= 1/Δv

m= (y2-y1)/(x2-x1)

a = Δv/m

m= (x2-x1)/(y2-y1)

Answer: Intersection of A and B = 2

Step-by-step explanation:

Total cards = 52

Let A is the event of drawing a 6 from the deck, and B is the event of drawing a black playing card from the deck.

Total cards having 6 on them = 4

[There are 4 suits of two different colors red and black.]

Total  black playing card =26

Intersection of A and B = Black cards having 6 = 2

hence, Intersection of A and B = 2

Those methods involving the collection, presentation, and characterization of a set of data in order to properly describe the various features of that set of data are called descriptive statistics.

Descriptive statistics:- Descriptive statistics helps to describe, summarize and organize the set of data efficiently and in an informative way, so that it'll be easier to make conclusion about the data in order to make rational decisions. This method describes the characteristics of a dataset.

Example:- The average test score for the students of a particular class, gives descriptive sense of the typical scores.

There are three types of descriptive statistics-

Thus we can conclude that, those methods involving the collection, presentation, and characterization of a set of data in order to properly describe the various features of that set of data are called descriptive statistics.

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The quotient of x⁴ – 3x³ – 7x + 1 ÷ x + 2 is x³ - 5x² + 3x and the remainder is 5

From the question, we have the following parameters that can be used in our computation:

x^4 – 3x^3 – 7x + 1 ÷ x + 2

Rewrite as

x⁴ – 3x³ – 7x + 1 ÷ x + 2

This means that

Divisor = x + 2

Dividend = x⁴ – 3x³ – 7x + 1

Using the synthetic division, we have the following setup

-2 |    1     -3    -7     1

Bring down the first factor

-2 |    1     -3    -7     1

        1

Multiply by -2

-2 |    1     -3    -7     1

              -2

        1

Repeat the above steps as follows

So, we have

-2 |    1     -3    -7     1

              -2    10    -6

        1      -5    3    5

The last number represents the remainder of the division

This means that

Remainder = 5

Quotient = x³ - 5x² + 3x

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The ordered pair of the solution of the equation, x - 2y - 6 = 0 is d. (4,-1).

The solution of a linear equation is the points or the set of all possible values for the variables that satisfy the specified linear equation is the solution set of the system of linear equations.

Here we have  

Equation x - 2y - 6 = 0 ----- (1)

Now we need to find the solution to the equation from the given points  

Substitute each given point in equation (1) and check which point will satisfy equation (1)

Checking For a. (2,4)

=> 2 - 2(4) - 6 = 0

=> 2 - 8 - 6 = 0

=> -12 ≠ 0

Checking For b. (0,3)

=> 0 - 2(3) - 6 = 0

=> - 6 - 6 = 0

=> -12 ≠ 0

Cheking For c. (-4,1)

=> - 4  - 2(1) - 6 = 0

=> - 12  = 0

=> -12 ≠ 0

Cheking For d. (4,-1)

=> 4 - 2(-1) - 6 = 0

=> 4 + 2 - 6 = 0

=> 0 = 0  

By the above calculation,

The Equation x - 2y - 6 = 0 is satisfied only at d. (4,-1)

Therefore,

The ordered pair of the solution of the equation, x - 2y - 6 = 0 is d. (4,-1).

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Complete Question:

Which of the following ordered pairs is the solution of the equation

x - 2y - 6 = 0

a. (2,4)   b. (0,3)   c. (-4,1)     d. (4,-1)

Answer:

Step-by-step explanation:

Simplify by factoring both trinomials:

The 98% confidence interval for the proportion of all entering freshmen at this college who scored more than 590 on the math SAT is approximately 0.283 to 0.493.

To find the point estimate for the proportion of all entering freshmen at this college who scored more than 590 on the math SAT, we divide the number of freshmen who scored more than 590 by the total sample size.

Point Estimate = Number of freshmen who scored more than 590 / Total sample size

In this case, the number of freshmen who scored more than 590 on the math SAT is 45, and the total sample size is 116.

Point Estimate = 45 / 116 ≈ 0.388

Rounded to three decimal places, the point estimate for the proportion of all entering freshmen at this college who scored more than 590 on the math SAT is approximately 0.388.

To construct a 98% confidence interval for the proportion of all entering freshmen at this college who scored more than 590 on the math SAT, we can use the following formula:

Confidence Interval = Point Estimate ± (Critical Value * Standard Error)

The critical value corresponds to the desired confidence level and is obtained from the standard normal distribution. For a 98% confidence level, the critical value is approximately 2.326.

The standard error can be calculated using the following formula:

Standard Error = sqrt((Point Estimate * (1 - Point Estimate)) / Sample Size)

Using the point estimate from part (a) as 0.388 and the sample size as 116, we can calculate the standard error:

Standard Error = sqrt((0.388 * (1 - 0.388)) / 116) ≈ 0.050

Now we can construct the confidence interval:

Confidence Interval = 0.388 ± (2.326 * 0.050)

Lower Bound = 0.388 - (2.326 * 0.050) ≈ 0.283

Upper Bound = 0.388 + (2.326 * 0.050) ≈ 0.493

Rounded to three decimal places, the 98% confidence interval for the proportion of all entering freshmen at this college who scored more than 590 on the math SAT is approximately 0.283 to 0.493.

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