Mathematics High School

Can someone help me understand this?

Answers

Answer 1

Answer:

Step-by-step explanation:

Corresponding parts of similar triangle have the same proportions

Answer 2

Answer: A) [tex]\frac{AB}{XY} =\frac{AC}{XZ}[/tex]

Step-by-step explanation:

OK so if a figure is a dilation of another figure that means that is has the same angles but the sides are going to be smaller or bigger. Even though the sides are a different size they are proportional. So if I divided the length of AB over XY I'd get 5 since that is the scale factor. If I did that with AC over XZ I'd get 5 again because that is the scale factor. That's because they were proportional. Let's say this wasn't a dilation and AB over XY was 5 but AC over XZ was 4 that would mean it isn't proportional because AB would be 5 times bigger but XZ is only 4 times bigger.

Related Questions

How many possible outcomes are in spinning a spinner divided into red, yellow, orange, purple, blue, and pink?

SOMEONE ANSWER PLS

Answers

Answer:

Possible outcomes = 6

Step-by-step explanation:

Since the spinner is divided into red, yellow, orange, purple, blue and pink

Total of 6 colors.

Zack has 2 feet of basla wood. He needs twice that amounts to finish his project. The cost is $0.05 per inch how much will the balsa wood cost

Answers

Answer:

$2.40

Step-by-step explanation:

Zack needs a total of 4 feet of balsa wood which costs $0.05 per inch.

Note that 4 feet = 48 inches.

The overall cost will be ($0.05/in)(48 in) = $2.40

PLEASE HELP ASAP ITS URGENT

Answers

Step-by-step explanation:

the answer is in the image above

find the area of the figure below

A.288.62
B.266.22
C.186.66
D.236.6

Answers

Answer:

A. 288.62

Step-by-step explanation:

Area of two triangles = 15.3 * 10.4 = 159.12

Area rectangle = hypotenuse triangle * 7

hypotenuse = √108.16 + 234.09

Hypotenuse = 18.5

Area rectangle = 18.5 * 7 = 129.5

129.5 + 159.12 = 288.62

Answer = A. 288.62

If my answer is incorrect, pls correct me!

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-Chetan K

help pls no brainlist if not

Answers

1/4 divided by 2 is the answer

Se tienen 25 billetes de 5 y de 20 lempiras con un monto de 350 lempiras cuantos billetes de 5 lempiras se tienen y de 20 lempiras

Answers

Answer:

El número de facturas

5 lempiras = 10 billetes

20 lempiras = 15 billetes

Step-by-step explanation:

Vamos a representar

El número de facturas de

5 lempiras = x

20 lempiras = y

Nuestro sistema de ecuaciones se da como:

x + y = 25 ..... Ecuación 1

x = 25 - y

5 × x + 20 × y = 350

5x + 20y = 350 .... Ecuación 2

Sustituiríamos x por 25 - y en la ecuación 2

5 (25 - años) + 20y = 350

125 - 5 años + 20 años = 350

125 + 15 años = 350

15 años = 350 - 125

15 años = 225

y = 225/15

y = 15

Resolviendo para x

x = 25 - y

x = 25 - 15

x = 10

Por lo tanto, el número de facturas

5 lempiras = 10 billetes

20 lempiras = 15 billetes

In RST, RS = 8 and ST = 10. Which one of the following cannot be true?

Answers

RT cannot equal 18 because then A + B would be equal to C which and then the sides cannot touch.

Which of the following figures have an area greater than 40 square centimeters?
Select ALL that apply.
A. A triangle that has a base of 8 cm and height of 9 cm
B. A square that has a side length of 7 cm
C. A rectangle that has a base of 14 cm and height of 3 cm
D. A parallelogram that has a base of 5 cm and a height of 6 cm

Answers

B AND C

Step-by-step explanation:

AREA OF SQUARE =L²

= 7²

= 49cm²

C..

area of a rectangle Base × height

= 14 × 3

= 42cm²

-4x4+1.5-2.5-2x4-6.5

Answers

Answer:

0.5

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What is the value of x in degrees? (picture above)

Answers

the length are all same so i guess it must be 48°

which method should be used for x? 2.5x=5.7

Answers

Answer:

2.28

Step-by-step explanation:

2.5x = 5.7

Divide both sides by 2.5 to isolate the x variable.

x = 2.28

Given that sin(Θ)=1/2 and Θ is in quadrant II, which of the following would be the value of cos(Θ)?
a. 1/2
b. -1/√3
c. √3/2
d. -√3/2
e. 2

Answers

i think it should be e but not shure

CSC(4x) - cot(4x)
CSC(4x) + cot(4x) =

A. tan(2x)
B. cot(4x)
C.tan^2(2x)
D. tan^2 (4x)

Answers

Answer:

c. tan^2(2x)

Step-by-step explanation:

The required simplified expression is given as tan²(2x). Option c is correct.

[CSC(4x) - cot(4x) ] / [CSC(4x) + cot(4x) to be simplified.

What is simplification?

The process in mathematics to operate and interpret the function to make the function simple or more understandable called simplifying and the process is called simplification.

[tex]= [csc(4x) - cot(4x)] / [csc(4x) + cot(4x)] \\= [1/sin4x - cos4x/sin4x] / [1/sin4x + cos4x/sin4x]\\= [(1-cos4x)/sin4x] / [(1+cos4x) /sin4x] - - - - (1)[/tex]
Here,
[tex]1 - cos4x = 2sin^24x[/tex]

[tex]sin4x = 2sin2xcos2x,\\ 1+cos4x = 2cos^22x[/tex]
now put the value in equation 1
[tex]= [(2sin^22x)/2sin2xcos2x] / [(2cos^22x) /2sin2xcos2x] \\= [(sin2x)/cos2x] / [(cos2x) /sin2x] \\=tan2x/cot2x\\=tan^22x[/tex]

Thus, the required simplified expression is given as tan²(2x). Option c is correct.

Learn more about simplification here:
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The image of ADEF is ADE'F'. Under which transformation will the triangles not be congruent?
O a reflection through the origin
O a reflection over the line y = x
O a dilation with a scale factor of 1 centered at (2,3)
a dilation with a scale factor of centered at the origin

Answers

Answer:

there is no image go see here

Which linear inequality is represented by the graph?
y<3x+2
y>3x+2
y<1/3x+2
y>1/3x+2

Answers

Answer:

Y < 3x+2

Step-by-step explanation:

Alright so if you ever get stuck on something like this, Go on demos and put in (0,2) and then add in (-3,-7) and then add in the other answers to see if they match.

So your answer is:

y>3x+2

SU is a midsegment of △QRT. If QR=v–66 and SU=v–76, what is the value of v?

Answers

Answer:

v=56

Step-by-step explanation:

su is half qr, 2(v-66)=v-76, simplifies to v=56

I have this math problem and it is: an equation in function from that reflects f(x)=3x over the line y=0.

Answers

Answer:

[tex]g(x) = -3x[/tex]

Step-by-step explanation:

Given

[tex]f(x) = 3x[/tex]

Required

Reflect over [tex]y = 0[/tex]

This means that we reflect over the x-axis

And the rule of reflection is:

[tex](x,y) \to (x,-y)[/tex]

Hence:

[tex]f(x) = 3x[/tex]

Will become:

Answers

Answer:

The answer would be 87^2

Step-by-step explanation:

The solution is, Area of a sector is 138.23 cm².

What is area ?

Area is the measure of a region's size on a surface. The area of a plane region or plane area refers to the area of a shape or planar lamina, while surface area refers to the area of an open surface or the boundary of a three-dimensional object.

here, we have,

The formula for the area of a sector is given as:

θ/360 × πr²

θ = 110°

Radius = r = 12 cm

Hence

Area of a sector = 110/360 × π × 12²

= 138.23007676 cm²

Approximately, Area of a sector = 138.23 cm²

Hence, The solution is, Area of a sector is 138.23 cm².

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Rita is spending more time at home to study and practice math. Her efforts are finally paying off. On her first assessment she scored 58 points, then she scores 63 and 68 on her next two assessments. If her scores continued to increase at the same rate, on which assessments will she be scoring above 85? Select all that apply.

Answers

Answer:

7th

Step-by-step explanation:

63 - 58 = 5

68-63 = 5

She is adding 5 points each time

a1 = 58

d = 5

a2 = 63

a3 = 68

a4 = 58+5 = 73

a5 = 73+5 = 78

a6 = 78+5 = 83

a7 = 83+5 = 88

This is the first assessment greater then 85, so the 7th assessment

1. You win a prize and are offered two choices. Which of the choices could be represented by a linear equation?
Choice A: $100 on January 1, $200 on February 1, $400 on March 1, $800 on April 1, and so on, with the amount doubling each month,
Choice B: $50 the first month, $100 the second month, $150 the third month, and so on, with $50 added each month,
ONeither is linear
O Choice A
O Choice B
Not enough information is given

Answers

Answer:

Coice a

Step-by-step explanation:

O Choice A could be represented by a linear equation,

What is equation?

An equation is a mathematical statement that is made up of two expressions connected by an equal sign. In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.

here, we have,

Choice A: $100 on January 1, $200 on February 1, $400 on March 1, $800 on April 1, and so on, with the amount doubling each month,

Choice B: $50 the first month, $100 the second month, $150 the third month, and so on, with $50 added each month,

we have to find, Which of the choices could be represented by a linear equation,

we know that,

O Choice A could be represented by a linear equation,

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PLEASE HELP! SEE PHOTO FOR QUESTION

Answers

Answer:

Step-by-step explanation:

Intercepts are basically points where if one of the coordinates is a number above 0, the other one HAS TO BE 0

Since there are three points where there are x-intercepts (since the y is 0), there will be three x-intercepts.

Since there is only one point where there are y-intercepts (since the x is 0), there will be only one y-intercept.

The intercepts don't give an exact answer so you would have to estimate where they are on the graph. For example, the y-intercept is between 20-30 and is leaning more towards 30, so you would think it's around 27-29 (And if you look at option A, you can see that it's (0,28))

You got the answer wrong because for one of the x-intercepts, you said that it was negative when it was actually positive. (I believe it was the (2.3,0) one.)

Raul is flying a kite at the end of a string that is 200 feet long. Raul is holding the string 5 feet off the ground at the angle to the horizontal of 25. How high is the kite off the ground?

Answers

Answer:

Kite is 89.52 ft off the ground

Step-by-step explanation:

We are told that the string is 200 ft long.

That the string is 5 ft off the ground at an angle of 25° to the horizontal.

I have drawn a triangle to depict this illustration with x being the height of the kite from the end of the string.

Also, I have depicted the ground level which is 5 ft below the end of the string.

From the triangle, we can calculate the height of the kite above the end of the string using pythagoras theorem.

x/200 = sin 25

x = 200 sin 25

x = 200 × 0.4226

x = 84.52 ft

Now, the bottom of the kite is 5 ft off the ground as depicted in the attachment.

Thus, height of kite above the ground = 84.52 + 5 = 89.52 ft

please answer thissssss

Answers

Answer:

A? oof not sure

Step-by-step explanation:

I dont know

The answer you need is A

En una fábrica, tres de cada veinte jarrones salen con algún defecto. Si se hacen 1000 jarrones, ¿Cuántos saldran defectuosos?

Answers

Answer:

si se hacen 1000 jarrones, 150 saldrán defectuosos.

Step-by-step explanation:

En primer lugar es conveniente determinar el porcentaje de jarrones que salen con algún defecto.

Si 20 corresponde a la cantidad total de jarrones, entonces, se divide 3 sobre 20 para encontrar el porcentaje al que 3 jarrones defectuosos corresponde. La división da como resultado 0,15. Para transformar el valor encontrado en porcentaje, es necesario multiplicar por 100. Entonces, 3 jarrones defectuosos corresponden a 15% de jarrones en total.

Si se hacen 1000 jarrones, es necesario multiplicar por dicho número. Esto es: 15%*1000, obteniendo como resultado 150.

Entonces, si se hacen 1000 jarrones, 150 saldrán defectuosos.

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