All categories

9 months ago

Which is not a step in finding the scale factor of dilation

Mathematics

1 answer:

mariarad [96]9 months ago

5 0

1)To find a Scale factor of Dilation, about the origin

We have

Pre-mage Image

(x, y) k(x,y)

For example

Pre-image Image

(2,4) 2(2,4) = (4,8)

2)When it's not about the origin then we have to count from the Projection Point

Having said this, ex

Which is not a step

We can divide the x value of the image over the pre-image, not the way around.

In the example, I've given if we divide the pre-image over the image value we would have found a scale factor of 1/2. In the example, The scale factor was the inverse: 2

You might be interested in

Use the Distributive Property to simplify (–5 – c)( –1).

damaskus [11]

It’s the first option, 5 + c

4 0

1 month ago

Read 2 more answers

which of the following gives an equation of a line that passes through the point (6 over 5, -19 over 5) and is parallel to the l

victus00 [196]

One equation for this would be

$y = \frac{41}{16} x-\frac{55}{8}$

We start by finding the slope between the two points:

$m=\frac{y_2-y_1}{x_2-x_1}=\frac{-12-\frac{-19}{5}}{-2-\frac{6}{5}}
\\
\\=(-12+\frac{19}{5}) \div (-2-\frac{6}{5})
\\
\\=(\frac{-60}{5}+\frac{19}{5}) \div (\frac{-10}{5}-\frac{6}{5})
\\
\\=\frac{-41}{5} \div \frac{-16}{5}=\frac{-41}{5} \times \frac{-5}{16}=\frac{41}{16}$

A line parallel to this one will have the same slope. We will use point-slope form to write our equation:

$y-y_1=m(x-x_1)
\\
\\y-\frac{-19}{5}=\frac{41}{16}(x-\frac{6}{5})
\\
\\y+\frac{19}{5}=\frac{41}{16}x- \frac{41}{16} \times \frac{6}{5}
\\
\\y+\frac{19}{5}=\frac{41}{16}x-\frac{246}{80}
\\
\\y+\frac{304}{80}=\frac{41}{16}x-\frac{246}{80}
\\
\\y=\frac{41}{16}x-\frac{246}{80}-\frac{304}{80}
\\
\\y=\frac{41}{16}x-\frac{550}{80}
\\
\\y=\frac{41}{16}x-\frac{55}{8}$

6 0

2 years ago

Y-x=-6 write an equation in slope intercept form. Give the y intercept of the line

mihalych1998 [28]

Slope intercept form: y=x-6

Y intercept: -6

Hope I helped!(:

8 0

2 years ago

Read 2 more answers

ASAP The team plowed 36 rows in 5 hours. The rain slowed their rate by one-half. How many rows could they now plow in 18 hours?

Vlad [161]

Answer:

Its A just explan the work like 129.6/64.8x98

8 0

2 years ago

Harper deposited $110 into a savings account that earns 3.5% interest a year. The function (R)t models the amount of money Raymo

schepotkina [342]

Answer:

A. $2.26

Step-by-step explanation:

An equation for Harper's balance can be written similar to the one written for Raymond's balance. It will be ...

H(t) = 110(1.035)^t

For t = 2, the two balances will be ...

H(2) = 110(1.035^2) = 117.83

R(2) = 110(1.025^2) = 115.57

The difference is ...

$117.83 -115.57 = $2.26

Harper's account will have $2.26 more.

_____

As a quick estimate or sanity check, you can see that Harper's interest rate is 1% more than Raymond's. So, in 2 years, he will earn a little more than 2% more on his investment than Raymond earns. 2% of $110 is $2.20, so the difference can be expected to be slightly more than this.

7 0

2 years ago