1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Leno4ka [110]
3 years ago
12

A dilation with center (0,0) and scale factor "k" is applied to a polygon. What dilation can you apply to the image to return it

to the original preimage?
Mathematics
1 answer:
nignag [31]3 years ago
8 0
So when we scale up this image, all points' distances from the center are multiplied by k. We want to then put them back to where they were before.

Thinking about inverse operations, we could just divide by k[tex], right? But the problem with having a scale factor is we can only multiply.\\Think about fractions. Dividing by a fraction is the same as multiplying by the reciprocal, right? \\So if we think of [tex]k as \frac{k}1, then the opposite reciprocal would be \boxed{\frac{1}k}
You might be interested in
What is the prime factorization of 96? 8 · 12 2 · 2 · 2 · 2 · 3 25 · 3 25 · 32
olganol [36]
96
/ \
8 • 12
/ \ / \
4 • 2 • 4 • 3
/ \ / \
2 2 2 2
96 is 2•2•2•2•2•3 or 2^5•3
8 0
3 years ago
If m 1 = 140 and m 3 = 50, what is m 5
dolphi86 [110]
The answer is: m5 = -40.
7 0
3 years ago
Read 2 more answers
Help!!!! please!!!!<br> thank you!!!!!!
pentagon [3]

Answer:

18) 6x^2-7x-5

19) 20x^2+17x-63

20) 18x^2-20x+2

21) 5x^2+42x+16

Step-by-step explanation:

Perimeter=length×breadth

18) (3x-5)(2x+1)

=6x^2+3x-10x-5

=6x^2-7x-5

19) (4x+9)(5x-7)

=20x^2-28x+45x-63

=20x^2+17x-63

20) (18x-2)(x-1)

=18x^2-18x-2x+2

=18x^2-20x+2

21) (5x+2)(x+8)

=5x^2+40x+2x+16

=5x^2+42x+16

6 0
3 years ago
A clinical psychologist wants to test whether experiencing childhood trauma affects one's self-efficacy in adulthood. He randoml
Verdich [7]

Answer:

Step-by-step explanation:

We would set up the hypothesis test. This is a test of a single population mean since we are dealing with mean

For the null hypothesis,

µ = 152.5

For the alternative hypothesis,

µ ≠ 152.5

This is a two tailed test.

Since no population standard deviation is given, the distribution is a student's t.

Since n = 231

Degrees of freedom, df = n - 1 = 231 - 1 = 230

t = (x - µ)/(s/√n)

Where

x = sample mean = 148.9

µ = population mean = 152.5

s = samples standard deviation = 27.4

t = (148.9 - 152.5)/(27.4/√231) = - 2

We would determine the p value using the t test calculator. It becomes

p = 0.047

Since alpha, 0.05 > thanthere sufficient evidence to conclude that the self-efficacy of adults who have experienced childhood trauma differs from that in the general population of individuals the p value, 0.047, then we would reject the null hypothesis. Therefore, At a 5% level of significance, there is sufficient evidence to conclude that the self-efficacy of adults who have experienced childhood trauma differs from that in the general population of individuals

6 0
3 years ago
A drawer contains a dozen unmatched brown socks and a dozen unmatched black socks. how many socks must someone take out to ensur
krok68 [10]
 <span>A) 3 - The third sock will match the first or second if they don't match each other. 
B) 14 - It's highly unlikely yet possible to remove all brown socks first, the next two would have to be black.</span>
5 0
3 years ago
Other questions:
  • X-1/2=15 1/4 whats x and show work
    11·1 answer
  • How do know how many protons are in a atom
    5·2 answers
  • Convert the following into scientific notation:<br> 70.2 = _____ x 10 ____
    10·2 answers
  • The net of a square pyramid is shown below:
    14·2 answers
  • Help plz 20 points.. tysm
    7·2 answers
  • 1/2r = 7/2. solve for r
    11·2 answers
  • Find a difference 118.419 - 6.74​
    14·1 answer
  • 11 4/5 + 3 5/6 and you have to add
    7·2 answers
  • Water leaks from tanker at a rate of 8L/h. How much water will leak from the tank in: a: 2 Day. b: 2 Weeks
    14·1 answer
  • PLsss HELP IN NEED HELP ASAP
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!