Need help with this question

Need Help With This Question

Answers

Answer 1

The value of the angle m∠BDC is 105°.

What is third angle theorem?If the other two sets are both congruent, then the third angles are equal.The third pair of angles must be congruent if two angles in one triangle are congruent with two angles in another triangle. The Third Angle Theorem refers to this.The Triangle Sum Theorem can be thought of as an extension of the Third Angle Theorem. The Triangle Sum Theorem states that once two angles in a triangle are known, you automatically know the third. This indicates that if you have two triangles with two pairs of congruent angles between them, you will receive the same result both times when you apply the Triangle Sum Theorem to each triangle to determine the third angle. The third pair of angles must therefore likewise be similar.

Let separate the triangles and find missing angle in triangle with given angles.

CAD = 45°

CDA = 30°

Then, CAD+CDA+ACD = 180°

45°+30°+ACD=180°

ACD=180°-75°

       =105°

by applying third angle theorem,

∠CAD=∠DBC=45°

∠ADC=∠BCD=30°

Then, ∠DBC+∠BCD+∠BDC=180°

45°+30°+BCD=180°

BCD=180°-75°

      =105°

Hence, The value of the angle m∠BDC is 105°.

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Related Questions

Some people say that if you want to know how far away a storm is, you count the number of
seconds between seeing the lightning and hearing the noise of the thunder. Sounds travels at
1.129 feet per second. How far away is a storm if the time between the lightning and the thunder
is 8 seconds?

Answers

1.129 + 8 = 9.129

1.129*8 = 9.032

A rope is 225 centimeters long you need the rope to be 1 1/2 meters long how many centimeters should you cut off

Answers

that would be 75 centimeters


Touchdown A football team scored 24 of their 28 points from touchdowns.
A touchdown is worth 6 points. How many touchdowns did the team score?

Answers

24/28 of the points were from touchdowns

6 points=1 touchdown

24/6=4

So they made 4 touchdowns

Answer:

The answer is : 4 touchdowns

Step-by-step explanation:

\(24 \div 6\)

\(calculate = \frac{24}{6} \)

\( = 4\)

PLZZZZZZ HELPP I WILL GIVE BRAINLY

PLZZZZZZ HELPP I WILL GIVE BRAINLY

Answers

Answer: 7,5

Step-by-step explanation:

Answer:

Hope this helps :)

Step-by-step explanation:

y=5x-4

xint: (4/5,0)

yint: (0,-4)

slope: 5

y+2x=3

x int:(3/2,0)

yint:(0,3)

slope: -2

the set S = [−10, 10]
Define the function g on S
g(x) :=
Does g have a maximum and minimum on the set S? Prove or disprove.
2. Find the global maxima and minima of g on the set S if they exist.

Answers

Yes, g has a maximum and minimum on the set S.

Since S is a closed and bounded interval, by the Extreme Value Theorem, any continuous function on S will have both a maximum and minimum value. Therefore, g, defined on S, will have both a maximum and minimum value.

To find the global maxima and minima of g on the set S, we need to analyze the function g(x). However, since no specific function is defined for g, we cannot determine the exact maxima and minima values without further information. We can make some general observations about g(x) on S. Firstly, since S includes both negative and positive values, g(x) could be a piecewise function that changes at x = 0. Secondly, the behavior of g(x) will depend on the specific function used to define it. For example, if g(x) = x^2, then g(x) will have a minimum value of 0 at x = 0 and a maximum value of 100 at x = 10 or x = -10. Similarly, if g(x) = -x^3, then g(x) will have a maximum value of 1000 at x = 10 and a minimum value of -1000 at x = -10.

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Your auto insurance is $900 per quarter. What should you use as the monthly average? The auto insurance is a fixed expense, but we need to convert to monthly:

Answers

Answer:

$225

Step-by-step explanation:

A quarter is made up of 4 months,

If auto insurance is $900 per quarter, the monthly expense would be $900 / 4 = $225

Starting with the formula for the difference of cubes, which pair of steps can be used to show that the expressions are
equivalent?
O Apply the distributive property, and then combine like terms.
O Combine like terms, and then apply the distributive property
O Apply the commutative property, and then combine like terms.
Combine like terms, and then apply the commutative property.

Answers

Answer:

Apply the distributive property, and then combine like terms.

Step-by-step explanation:

I jus got 100% on the quiz.

The pair of steps which can be used to show that the expressions are equivalent are Apply the distributive property, and then combine like terms.

What is Distributive Property?

Distributive property is a property defined for three numbers or terms a, b and c as follows.

a (b + c) = ab + ac

The formula for difference of cubes is,

a³ − b³ = (a − b) (a² + ab + b²).

Starting from right hand side,

using the distributive property, (a − b) (a² + ab + b²) can be written as,

(a − b) (a² + ab + b²) = a (a² + ab + b²) - b (a² + ab + b²)

                                 = a³ + a²b + ab² - ba² - ab² - b³

Combining like terms,

(a − b) (a² + ab + b²) = a³ - b³

Hence he correct option is A.

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what is m
help ASAP pleasee!!

what is mhelp ASAP pleasee!!

Answers

Angles. Triangle angles.

The sum of angles of a triangle equals 180°.

Therefore:

|∠EAB| + |∠ABE| + |∠BEA| = 180°

Susbtitute

|∠EAB| = 14°

|∠ABE| = 45°

|∠BEA| = x°

14° + 45° + x° = 180°

59° + x° = 180°    |subtract 59° from both sides

x° = 121°

∠BEA and ∠CED are vertical angles. Vertical angles are congruent, meaning that they have the same angle measure.

Therefore

|∠CED| = 121°

In ΔCDE:

|∠CED| + |∠DCE| + |∠EDC| = 180°

Substitute:

|∠CED| =121°

|∠DCE| = 27°

|∠EDC| = y°

121° + 27° + y° = 180°

148° + y° = 180°    |subtract 148° from both sides

y° = 32°

|∠EDC| = 32°

A doctor prescribes 125 milligrams of a therapeutic drug that decays by about 30% each hour.
A. What is the half-life of the drug?
B. Write an exponential model representing the amount of the drug remaining in the patient’s system after t hours. Then use the formula to find the amount of the drug that would remain in the patient’s system after 3 hours. Round to the nearest milligram.

Answers

A. The half-life of the therapeutic drug is approximately 2.31 hours. B. A(t) = 125 * (0.7)^t ≈ 42.88 after 3 hours = 30.06 milligrams ( rounded) .

To explain further, the decay of the therapeutic drug is described as decreasing by about 30% each hour. This implies that the drug retains 70% (or 0.7) of its previous amount after each hour.

The half-life of a substance is the amount of time it takes for the substance to decay to half of its initial quantity. In this case, the decay rate is 30%, which means the drug decays to half its initial amount after approximately 2.31 hours.

To model the amount of the drug remaining in the patient's system after t hours, we can use the exponential function A(t) = 125 * (0.7)^t, where A(t) represents the amount of the drug in milligrams.

To find the amount of the drug remaining after 3 hours, we substitute t = 3 into the exponential model:

A(3) = 125 * (0.7)^3

≈ 125 * 0.343

≈ 42.88

Rounding to the nearest milligram, approximately 30.06 milligrams of the drug would remain in the patient's system after 3 hours.

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Ava bought 2 sandwiches for a total of $5.25 , a bowl of soup for $3.00, and a bag of chips for 1.25. How much change did she get back if she paid with a $20.00 bill?

Answers

Answer:

she would get 11 dollars back

Step-by-step explanation:

look....first count all the money together 5 + 3 + 1 = 9............Then subtract 9 from 20 and there u go

$5.25 + $3.00 + $1.25 = $9.50

Ava spent $9.50 total.


$20.00 - $9.50 = $10.50

After paying with a 20 dollar bill, she would receive $10.50 in change.

please help with with the question please and thank you

please help with with the question please and thank you

Answers

Answer:

( -4, 3)

Step-by-step explanation:

y - y1 = m( x - x1)

y - 3 = 2 (x + 4)

( -4, 3)

Answer:

(- 4, 3 )

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b ) a point on the line

y - 3 = 2(x + 4) ← is in point- slope form

with slope m = 2 and (a, b ) = (- 4, 3 )

∬R​(x^2−y^2)dA, where R is bounded by the ellipse b^2x^2+a^2^y2≤a^2b^2. (Express the answer in terms of a and b )

Answers

We have been given the expression as follows:$$ \iint_R(x^2-y^2) \, dA $$Here, R is bounded by the ellipse $$\frac{x^2}{b^2}+\frac{y^2}{a^2} \leq 1$$

The region R is shown in the figure below:Region R has been bounded by an ellipse. We need to find the value of the given expression for this region.Using double integral,

we can find the value of the expression as follows:$$ \iint_R(x^2-y^2) \, dA $$Since, the region R is symmetric in x and y, we can use the formula for double integral as follows:$$ \int_{-a}^a \int_{-b\sqrt{1-\frac{x^2}{a^2}}}^{b\sqrt{1-\frac{x^2}{a^2}}}(x^2-y^2) \, dy \, dx $$$$ \int_{-a}^a \left[xy-\frac{y^3}{3}\right]_{-b\sqrt{1-\frac{x^2}{a^2}}}^{b\sqrt{1-\frac{x^2}{a^2}}}dx $$

Now, putting the limits, we get:$$ \int_{-a}^a \left[xb^2\sqrt{1-\frac{x^2}{a^2}}+\frac{2b^2}{3}\left(1-\frac{x^2}{a^2}\right)^{3/2}-xa^2\sqrt{1-\frac{x^2}{a^2}}-\frac{2a^2}{3}\left(1-\frac{x^2}{a^2}\right)^{3/2}\right]dx $$

Simplifying the above expression, we get:$$ \int_{-a}^a \left[\frac{2}{3}(a^2-b^2)x\sqrt{1-\frac{x^2}{a^2}}+\frac{4}{3}b^2\left(1-\frac{x^2}{a^2}\right)^{3/2}\right]dx $$Now, putting $x=a\sin\theta$,

we get:$$ \int_{-\frac{\pi}{2}}^{\frac{\pi}{2}} \left[\frac{2}{3}(a^2-b^2)a\sin\theta\cos\theta+\frac{4}{3}b^2\left(1-\sin^2\theta\right)^{3/2}\right]a\cos\theta \, d\theta $$

Simplifying the above expression, we get:$$ \frac{4}{3}ab^2\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}}\left[\cos^2\theta\sqrt{1-\sin^2\theta}\right]d\theta $$Using the identity $\cos^2\theta=1-\sin^2\theta$,

we can simplify the above expression as:$$ \frac{4}{3}ab^2\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}}\left[\sin^2\theta\cos^2\theta\right]^{1/2}d\theta $$Now, using the substitution $u=\sin\theta$, we get:$$ \frac{4}{3}ab^2\int_{-1}^1\sqrt{u^2-u^4}du $$

Using the substitution $u=\sin\phi$, we get:$$ \frac{4}{3}ab^2\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}}\sqrt{\sin^2\phi-\sin^4\phi}\cos\phi \, d\phi $$Now, using the identity $\sin^2\phi=1-\cos^2\phi$,

we can simplify the above expression as:$$ \frac{4}{3}ab^2\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}}\sqrt{1-\sin^2\phi-\sin^4\phi}\cos\phi \, d\phi $$Now, using the identity $\sin^2\phi=\frac{1-\cos(2\phi)}{2}$,

we get:$$ \frac{4}{3}ab^2\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}}\sqrt{1-\frac{1}{2}\cos^2(2\phi)-\frac{1}{4}\cos^4(2\phi)}\cos\phi \, d\phi $$Using the substitution $v=\cos(2\phi)$, we get:$$ \frac{2\sqrt{2}}{3}ab^2\int_0^1\sqrt{1-\frac{1}{2}v^2-\frac{1}{4}v^4}dv $$Using the substitution $v=\sqrt{2}\sin\theta$, we get:$$ \frac{2\sqrt{2}}{3}ab^2\int_0^{\frac{\pi}{2}}\sqrt{1-\sin^2\theta+\frac{1}{2}\sin^4\theta}\cos\theta \, d\theta $$Now, using the identity $\sin^2\theta=1-\cos^2\theta$,

we can simplify the above expression as:$$ \frac{2\sqrt{2}}{3}ab^2\int_0^{\frac{\pi}{2}}\sqrt{2\cos^2\theta-\cos^4\theta}\cos\theta \, d\theta $$

Now, using the substitution $w=\cos\theta$, we get:$$ \frac{4}{3}ab^2\int_0^1\sqrt{2w^2-w^4}dw $$Using the substitution $w=\sqrt{2}\sin\phi$, we get:$$ \frac{4}{3}ab^2\int_0^{\frac{\pi}{2}}\sqrt{2\sin^2\phi-2\sin^4\phi}\cos\phi \, d\phi $$Now, using the identity $\sin^2\phi=1-\cos^2\phi$,

we can simplify the above expression as:$$ \frac{4}{3}ab^2\int_0^{\frac{\pi}{2}}\sqrt{2\cos^2\phi-2\cos^4\phi}\cos\phi \, d\phi $$Using the substitution $z=\cos\phi$, we get:$$ \frac{2\sqrt{2}}{3}ab^2\int_0^1\sqrt{1-z^2}\sqrt{2z^2-1}dz $$Now, using the substitution $z=\frac{1}{\sqrt{2}}\cosh u$, we get:$$ \frac{4\sqrt{2}}{3}ab^2\int_0^{\operatorname{arcosh}\sqrt{2}}\sinh^2u \, du $$

Now, using the identity $\sinh^2u=\frac{1}{2}(\cosh 2u-1)$, we can simplify the above expression as:$$ \frac{4\sqrt{2}}{3}ab^2\left[\frac{1}{4}\sinh 2u-\frac{1}{2}u\right]_0^{\operatorname{arcosh}\sqrt{2}} $$

Putting the limits, we get:$$ \frac{4\sqrt{2}}{3}ab^2\left(\frac{1}{4}\sqrt{3}+\frac{1}{2}\ln(2+\sqrt{3})\right) $$

Hence, the value of the given expression is $\boxed{\frac{2\sqrt{2}}{3}ab^2\left(\sqrt{3}+2\ln(2+\sqrt{3})\right)}$ (approx. 3.78ab²). Therefore, the solution is in 250 words.

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Divide. Enter the quotient in simplest form.
9/10 divided by 3/8

Answers

12/5. ‍♀️‍♀️‍♀️‍♀️‍♀️‍❤️‍‍‍❤️‍‍

An amusement park charges an admission fee of so dollars for each person. Let c be the cost (in dollars) of admission for P people. Write an equation relating c to P. Then use this equation to find the cost of admission for 13 people

Answers

Of course, if you don't know the admission fee per person, you'll have to get that information before you can crunch the numbers. But armed with the equation c = sP, you'll be well on your way to figuring out the cost of admission for any group size.

As per the question given,  

Picture this: You're planning a group outing to an amusement park, and you want to know the total cost of admission for your crew. Let's call the admission fee for each person "s" and the number of people in your group "P." The equation to determine the total cost of admission, "c," is simply c = sP.

So if you have 13 people in your group and you know the admission fee per person, you can easily calculate the cost of admission for your crew. Just substitute P = 13 into the equation and multiply by s. It's that simple!

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The net of a triangular prism and it's dimensions are shown. What is the total surface area of the prism in square ft?

Answers

Answer:

270 cm²

Step-by-step explanation:

The question is not complete, but a similar question is attached.

Solution:

A prism is a three dimensional polygon with two identical and opposite faces. These bases are called the base of the polygon.

A triangular prism is a prism in which its bases are triangular in shape and it also has three rectangular sides.

The total surface area (TSA) of a triangular prism is given by:

TSA = area of triangle 1 + area of triangle 2 + area of rectangle 1 + area of rectangle 2 + area of rectangle 3

Area of triangle 1 = (1/2) * base * height = 1/2 * 6 * 5 = 15 cm²

Area of triangle 2 = (1/2) * base * height = 1/2 * 6 * 5 = 15 cm²

Area of rectangle 1 = length * breadth =15 * 6 = 90 cm²

Area of rectangle 2 = length * breadth =15 * 5 = 75 cm²

Area of rectangle 3 = length * breadth =15 * 5 = 75 cm²

TSA = 15 cm² + 15 cm² + 90 cm² + 75 cm² + 75 cm² = 270 cm²

7 Lanza is a gardener.
She has this plan of a garden.
9m
8m
Lanza needs to put grass turf to cover this garden.
She charges £16 a square metre to put grass turf in a garden.
Lanza thinks she will need to charge more than £800 to put grass turf in this garden.
Is she correct?
Show why you think this.​

Answers

Answer:£872

Step-by-step explanation:

what is the value of X? 16X = 156.8

Answers

the given expression is,

16x = 156.8

x = 156.8/16

x = 9.8

thus, the answer is 9.8

Answer:

x = 9.8

Step-by-step explanation:

16x=156.8

x = 156.8/16

x = 9.8

Single-case designs, by definition, do not incorporate control groups. What is the standard for comparison purposes to evaluate the treatment effects

Answers

In single-case designs, the standard for comparison purposes to evaluate the treatment effects is typically the individual's own performance during different phases of the study. Here's a step-by-step explanation:

1. Baseline Phase: The study begins by collecting data on the individual's behavior or performance without any intervention. This phase is called the baseline and serves as a reference point for comparison.

2. Intervention Phase: After establishing the baseline, the researcher introduces the treatment or intervention. The individual's performance during this phase is then compared to their performance during the baseline phase.

3. Reversal or Withdrawal Phase (optional): In some single-case designs, the intervention is withdrawn to see if the individual's performance returns to baseline levels. This phase helps to further establish the treatment's effectiveness.

4. Replication (optional): The study can be replicated with the same individual or with other individuals to demonstrate the treatment's effectiveness across different cases.

By comparing the individual's performance across these different phases, researchers can evaluate the treatment effects without the need for a control group.

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Convert the fraction into a decimal number.

1.14286...
0.875
0.8...

Answers

Answer:

do u mean decimal to a fraction

Answer:

0.875

Step-by-step explanation:

7/8 in a decimal form is 0.875

PROBABILITY IN FRACTIONS PLSSSSSSS

PROBABILITY IN FRACTIONS PLSSSSSSS

Answers

For part A.
there is 10 shapes 4 of which are cylinders. So 4/10 chance of getting one. 40% can be simplified down to 2/5

Second picture there are 3 cylinders in 9 shapes. 3/9 chance 33% simplified to 1/3

Triangle ABC has AB = 13, BC = 14, and AC = 15. The points D, E, and F are the midpoints of AB, BC, and AC respectively. Let X ≠E be the intersection of the circumcircles of Δ BDE and Δ CEF. What is XA + XB + XC?a. 24b. 14√3c. 195/8d. 129√7/14e. 69√2/4

Answers

The answer is C) 195/8

First, we can use the fact that A, B, C, D, E, and F are concyclic and that D, E, and F are the midpoints of AB, BC, and AC respectively.

Let r be the radius of the circumcircle of triangle ABC. Then using the Pythagorean theorem, we can find that r = (151413) / (4*K) where K is the area of the triangle.

Now we can use the property that the perpendicular bisectors of any triangle pass through the circumcenter of the triangle. We know that the midpoint of a line segment is the foot of the perpendicular from that point to the other endpoint. Then we can use the property that the radius from the circumcenter of the triangle to the midpoint of a side is half the length of that side.

Therefore, the circumcenter of triangle BDE is located at X = (BD/2, DE/2) = (13/2, 7/2) and the circumcenter of triangle CEF is located at X = (CE/2, EF/2) = (15/2, 7/2).

So the coordinates of X are (13/2, 7/2) and since the circumcenter of a triangle is equidistant from each vertex of the triangle, we can find that XA = XB = XC = r = r = (151413) / (4*K)

Therefore, XA + XB + XC = 3r = 3(151413) / (4*K) = (195/8)

So the answer is c. 195/8.

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Pls someone help I need this urgently done

Pls someone help I need this urgently done

Answers

Answer:

\(p=3\) and \(q=4\) the mistake was in calculating \(3q-4q-10=6\) let's solve first.

Step-by-step explanation:

if \(p= 2q-5\), substitute the \(p\) in the equation\(3q-2p=6\) as

\(3q-2(2q-5)=6\)

solve the equation in parentheses :

\(3q-2(2q-5)\\\)

multiply  \(-2 \\\) by \((2q-5)\\\) it will equal to:  \(3q-4q+10\)

now we want to let all unknown digits alone, so we will take \(10\) to the other side with a different sign it will be as:

\(3q-4q=6-10\)

now we will solve it:

\(3q-4q=6-10\\q=-4\) at this part, the given equation was wrong in the paper.

we don't want the digit to be negative so we will do it like this:

\(\frac{-q}{-1} =\frac{-4}{-1 } = q=4\)

now that we found \(q\) we will substitute it to find \(p\\\):

\(p=2q-5\\q=4\\p=2(4)-5\\p=8-5\\p=3\)

overall the mistake was in calculating \(q\) instead of putting \(3q-4q=6-10\)  

he/she put a different sign in front of the digit like :\(3q-4q-10=6\)

so when he/she flipped  \(-10\) it became positive and instead of subtracting he/she added it.  

Suppose you conduct one experiment and find that the e = mc3, rather than the historically accepted formula, e = mc2. what should you do next?

Answers

We will repeat the exact same procedure. Something may have gone wrong.                                                                                                    

The special theory of relativity by German-born scientist Albert Einstein contains the equation \(E=mc^{2}\), which conveys the idea that mass and energy are one and the same physical substance and may be transformed into one another. The kinetic energy (E) of a body is equal to its increased relativistic mass (m) multiplied by the square root of the speed of light.

Because the mass and the speed of light are both constants, we are unable to test a new variable. Since our findings don't match the accepted formula, we cannot share them.

The result obtained is wrong we cannot apply it to another experiment. The only way we can find the correct result is by repeating the experiment. Because something may have gone wrong on the first attempt.

Therefore, the correct answer is

d) Repeat the exact same procedure.  

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The correct question is: Suppose you conduct one experiment and find that the \(E=mc^{3}\), rather than the historically accepted formula, \(E=mc^{2}\). What should you do next?

a.Test a new variable

b.Share your findings

c.Apply your results to a new experiment

d.Repeat the exact same procedure                                                                                                                                                                                                                                                                                                                                                                                      

                                                                                                                                                                                                                                                                                               

Section B
1. In the adjoining figure find out perpendicular, base and
hypotenuse from the given right-angled triangle with a and
B as the reference angles. Also give your reason.
a
nto
B
С
B.
D​

Section B1. In the adjoining figure find out perpendicular, base andhypotenuse from the given right-angled

Answers

Answer/Step-by-step explanation:

Using α as reference angle:

Perpendicular side = BC (one of the legs that adjoins to form a right angle. It is opposite to the reference angle.)

Base side = AB (The other leg that forms a right angle with the perpendicular side at the adjoining point. It is adjacent to the reference angle)

Hypotenuse = AC (the side opposite to the right angle, 90°)

Using β as reference angle:

Perpendicular side = AB (one of the legs that adjoins to form a right angle. It is opposite to the reference angle.)

Base side = BD (The other leg that forms a right angle with the perpendicular side at the adjoining point. It is adjacent to the reference angle)

Hypotenuse = AD (the side opposite to the right angle, 90°)

Polygon ABCD is drawn with vertices at A(1, 5), B(1, 0), C(−1, −1), D(−4, 2). Determine the image vertices of D′ if the preimage is rotated 90° counterclockwise.
D′(−2, −4)
D′(−2, 4)
D′(2, 4)
D′(4, −2)

Answers

The image vertices of D′ if the preimage is rotated 90° counterclockwise is A. D′(−2, −4).

What is a Polygon?

A polygon is a closed polygonal chain made up of a finite number of straight line segments and is a type of planar figure in geometry. A polygon is a region that is bounded by a bounding circuit, a bounding plane, or both. A polygonal circuit's segments are referred to as its edges or sides.

In Geometry, the rotation of a point 90° about the center (origin) in a counterclockwise (anticlockwise) direction would produce a point that has these coordinates (-y, x).

By applying a rotation of 90° counterclockwise to the vertices for D, the coordinates of the vertices of the image point D' are as follows:

(x, y)                               →            (-y, x)

Ordered pair D  = (-4, 2) → Ordered pair D' = (-2, -4)

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i Details Simplify (sin(t)−cos(t))^2 −(cos(t)+sin(t)) ^2÷2sin(2t) csc(t)
18cos(26c)sin(15c)=

Answers

The simplified expression for (sin(t) - cos(t))^2 - (cos(t) + sin(t))^2 / (2sin(2t) csc(t)) is -1/2. The expression 18cos(26c)sin(15c) does not simplify further.

To simplify the expression, we can expand the square terms and simplify the fraction:

(sin(t) - cos(t))^2 - (cos(t) + sin(t))^2 / (2sin(2t) csc(t))

Expanding the square terms:

(sin^2(t) - 2sin(t)cos(t) + cos^2(t)) - (cos^2(t) + 2sin(t)cos(t) + sin^2(t)) / (2sin(2t) csc(t))

Simplifying the numerator:

(-2sin(t)cos(t)) - (2sin(t)cos(t)) / (2sin(2t) csc(t))

Combining like terms:

-4sin(t)cos(t) / (2sin(2t) csc(t))

Simplifying further:

-2cos(t) / (sin(2t) csc(t))

Using the identity csc(t) = 1/sin(t):

-2cos(t) / (sin(2t) / sin(t))

Multiplying by the reciprocal of sin(t):

-2cos(t)sin(t) / sin(2t)

Using the double-angle identity sin(2t) = 2sin(t)cos(t):

-2cos(t)sin(t) / (2sin(t)cos(t))

Canceling out the common factors:

-1 / 2

Therefore, the simplified expression is -1/2.

For the second equation:

18cos(26c)sin(15c), since the expression does not have any common factors or identities that can be simplified further, we can leave it as it is.

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which is incorrect rounding for 53.864?
Please help me!

Answers

Answer:

52

Step-by-step explanation: This would be incorrect because 53.864 must round up.

Find the distance between the points (0, 0) and (4, 0).
02
04
O √8

Answers

Answer:

4 units

Step-by-step explanation:

(0, 0 ) and (4, 0 )

since the y- coordinates are equal  then the distance between the points is the difference of the x- coordinates, that is

| 4 - 0 | = | 4 | = 4 or

| 0 - 4 | = | - 4 | = | 4 | = 4

Jamal watched his brother Robert lift weights. The bar alone had a mass of 20 kg.

Answers

The solution is, 53.600 kg. mass was Robert lifting.

What is addition?

Addition is a way of combining things and counting them together as one large group. Addition in math is a process of combining two or more numbers.

Here, we have

given that,

The bar alone had a mass of 20 kg. on the bar

he had two 11.4 weights, two 4.5 kg weights, and four 450 g weights.

so, we get,

\(\bold{Total \ mass}=20+2(11.4)+2(4.5)+4(0.450)\)

\(=20+22.800+9+1.800\)

\(=53.600 kg\).

Hence, The solution is, 53.600 kg. mass was Robert lifting.

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Robert climbed 775 steps in 12 1/2 minutes.

Answers

Answer:

I don't really understand what the question you are asking is, is there a question that goes along with this?

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