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sergejj [24]
3 years ago
12

Line segment QR is dilated to create line segment Q'R'

Mathematics
2 answers:
leva [86]3 years ago
8 0

Answer:

3 Units on edge

Step-by-step explanation:

Lelechka [254]3 years ago
4 0

Answer:

The distance between R and R' is 3 units ⇒ 1st answer

Step-by-step explanation:

<u><em>A dilation</em></u> is a transformation that produces an image that is the same

shape as the original, but in a different size.

If the image is larger than the original figure then dilation is called an

enlargement.

If the image is smaller than the original figure then the dilation

is called a reduction.

The image of a line by dilation parallel to the original line if the original

line not passes through the center of dilation.

<em>Line segment QR is dilated to create line segment Q'R'</em>

∴ QR is parallel to Q'R'

<em>The factor of dilation is 1.5</em>

∴ The length of Q'R' is 1.5 the length of QR

In Δs TRQ and TR'Q'

∵ QR // Q'R'

∴ m∠TRQ = m∠TR'Q'

∴ m∠TQR = m∠TQ'R'

∵ ∠T is common in the two triangles

∴ ΔTRQ is similar to ΔTR'Q'

∴ \frac{TR'}{TR}=\frac{R'Q'}{RQ}

∵ \frac{Q'R'}{QR}=1.5

∵ TR' = TR + y

∵ Tr = 6 units

∴ TR' = 6 + y units

∵ \frac{TR'}{TR}=\frac{6+y}{6}

∴ 1.5=\frac{6+y}{6}

Multiply both sides by 6

∴ 9 = 6 + y

Subtract 6 from both sides

∴ 3 = y

* The distance between R and R' is 3 units

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Kara used the linear model y=45,000+ 0.05x to predict her total salary from achieving total sales of x.
hoa [83]

Answer:

45,000 is the starting salary with zero sales

.05 is the amount multiplied by the number of sales that is added to her salary

For each sale we add .05 to her salary

Step-by-step explanation:

y = 45,000 +.05x

Rewriting as

y = .05x +45,000

This is in slope intercept form ( y=mx+b) where m is the slope and b is the y intercept

.05 is the slope and 45,000 is the y intercept

45,000 is the starting salary with zero sales

.05 is the amount multiplied by the number of sales that is added to her salary

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6 0
3 years ago
Plz help if possible
mestny [16]
The answer is (1,3).....
4 0
3 years ago
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Evaluate the expression y=4. 5+y+8<br><br> A)72<br> B)21<br> C)17<br> D)13
Elden [556K]

Answer:

C)17

Step-by-step explanation:

5+y+8

let  y=4

5+4+8

9+8

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3 0
3 years ago
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Emergency 911 calls to a small municipality in Idaho come in at the rate of one every two minutes. Assume that the number of 911
nordsb [41]

Answer: a) 30, b) 0.2138, c) 0.0820

Step-by-step explanation:

Since we have given that

X be the number of calls in 1 hour = 60 minutes

Rate of one call every two minutes.

\lambda=\dfrac{1}{2}

(a) What is the expected number of 911 calls in one hour?

\lambda=\dfrac{1}{2}\times 60=30

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\lambda=\dfrac{1}{2}\times 5=2.5

Number of calls = 3

So, P(X=3) is given by

P(X=3)=\dfrac{e^{-\lambda}\lambda^x}{x!}\\\\P(X=3)=\dfrac{e^{-2.5}\times (2.5)^3}{3!}\\\\P(X=3)=0.2138

(c) What is the probability of no 911 calls during a five-minute period? If required, round your answer to four decimal places.

P(X=0)=\dfrac{e^{-2.5}(2.5)^0}{0!}=0.0820

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4 0
3 years ago
A limousine company charges a fixed cost for a limousine and an hourly rate for it's driver. It cost $500 to rent a limousine fo
mr Goodwill [35]

Answer: the fixed cost to rent the limousine is $200

Step-by-step explanation:

Let x represent the fixed cost rent the limousine.

Let y represent the cost of of hiring the driver of the limousine per hour.

It cost $500 to rent a limousine for 5 hours. This means that

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It costs 800 to rent a limousine for 10 hours. This means that

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Subtracting equation 2 from equation 1, it becomes

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Substituting y = 60 into equation 1, it becomes

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x + 300 = 500

x = 500 - 300

x = 200

5 0
3 years ago
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