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2 years ago

Trapezoid W′X′Y′Z′ is the image of trapezoid WXYZ under a dilation through point C.

Mathematics

2 answers:

IRINA_888 [86]2 years ago

4 0

Formula for scale factor
=image devide object
the answer is c

Snezhnost [94]2 years ago

4 0

Answer:

Option C.

Step-by-step explanation:

Two trapezoids W'X'Y'Z' and WXYZ have been given in the figure attached.

Trapezoid WXYZ has been dilated to form another trapezoid W'X'Y'Z'.

We have to find the scale factor by which WXYZ was dilated.

Dilation factor = $\frac{\text{Trapezoid W'X'Y'Z'}}{\text{Trapezoid WXYZ}} = \frac{W'X'}{WX}$

= $\frac{6}{8}$

= $\frac{3}{4}$

Therefore, $\frac{3}{4}$ is the dilation factor by which trapezoid WXYZ was dilated.

Option C is the answer.

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Calcuate the 2 unit rates for the following 150 gallons in 50 seconds. this answer has 2 answers. please help the teacher is goi

jeyben [28]

3 gallons per second
Or
1/3 second per gallon

Just do 150 gal over 50 seconds
Or reverse it to 50 sec over 150 gallons

So you get 3 gallons occur each 1 second or the it takes 1/3 of a second for each 1 gallon to flow

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3 years ago

A NASA spacecraft measures the rate R of at which atmospheric pressure on Mars decreases with altitude. The result at a certain

AysviL [449]

Answer:

$R = 0.0000498 \frac{KJ}{ m m^3}=0.0000498 \frac{KJ}{m^4}=4.98x10^{-5}\frac{KJ}{m^4}$

Step-by-step explanation:

For this case we have the following value:

$R = 0.0498 \frac{Kpa}{Km}$

We can convert this first to $\frac{Kpa}{m}$ like this:

$R=0.0498 \frac{Kpa}{Km} *\frac{1km}{1000m}=0.0000498 \frac{Kpa}{m}$

Now we use the fact the the pressure is defined as $P =\frac{F}{A}$ , whre P is the pressure, F the force and A the area, so then $Kpa= \frac{KN}{m^2}$ and then we can replace this:

$R=0.0000498 \frac{KN}{m^3}$

Now from definition of work we know that $W= Fd$ where W is the work, F the force and d the distance, so then is equivalent $KN =\frac{KJ}{m}$

And if we replace this into the equation we got:

$R = 0.0000498 \frac{KJ}{ m m^3}=0.0000498 \frac{KJ}{m^4}=4.98x10^{-5}\frac{KJ}{m^4}$

4 0

3 years ago

A scientist estimated that a mixture would need 4 milliliters of a chemical to balance. The actual amount needed was 7 millilite

Butoxors [25]

42.86% error was in the scientist's estimation.

Step-by-step explanation:

Given data;

Approx amount = 4 ml

Exact amount needed = 7 ml

Percentage error = $\frac{|Approx-Exact|}{Exact}*100$

$Percentage\ error=\frac{|4-7|}{7}*100\\Percentage\ error=\frac{|-3|}{7}*100\\Percentage\ error=\frac{3}{7}*100\\\\Percentage\ error=\frac{300}{7}\\Percentage\ error= 42.86\%$

42.86% error was in the scientist's estimation.

Keywords: error, percentage

Learn more about percentages at:

#LearnwithBrainly

6 0

3 years ago

Read 2 more answers

Frank and Lisa are analyzing the chart, which shows the speed at which light travels through different media. A 2 column table w

Shalnov [3]

The correct answer is

c) Neither person is correct because light does not change frequency when it travels through different media

we have given that The column on the right is labeled speed of light in meters per second and are all times 10 Superscript 8 Baseline with entries 2. 25, 2. 99, 1. 97, 1. 24.

<h3>What happened when light travels through the different media?</h3>

light changes both wavelength and speed when it travels through different media, but the frequency remains the same

light changes both wavelength and speed when it travels through different media, but the frequency remains the same.

Therefore the option c is correct that

Neither person is correct because light does not change frequency when it travels through different media

To learn more about the wavelength visit:

brainly.com/question/10728818

5 0

1 year ago

Can somebody help me?

nata0808 [166]

Answer: I believe the answer would be -2 so plot it on -2.

Explanation: Point P is -2.5 and point R is 0.5. Adding those would equal -2.

i hope this helps! :)

7 0

2 years ago

Trapezoid W′X′Y′Z′ ​ is the image of trapezoid WXYZ under a dilation through point C.

Trapezoid W′X′Y′Z′ is the image of trapezoid WXYZ under a dilation through point C.