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
Korvikt [17]
3 years ago
11

What scale factor was applied to the first rectangle to get the resulting image?

Mathematics
2 answers:
Lubov Fominskaja [6]3 years ago
4 0

Answer:

.2

Step-by-step explanation:

If you multiply 2.5 x .2 you get .5 meaning .2 is the scale factor

FrozenT [24]3 years ago
4 0

Answer: 0.2

Step-by-step explanation: All you got to do is multiply the rectangle with 2.5 by 0.2 to get the scale factor.

You might be interested in
Can someone help me question 17? Pls I really need how I can solve this question???
Anit [1.1K]
You can use the distance formula: d = sqrt((second x value - first x value)^2 + (second y value - first y value)^2):
answer : d = sqrt((3+2)^2+(6+6)^2) = 11.95826074 units
4 0
3 years ago
PLEASE HELP ME I BEG I WILL GIVE BRAINLIEST
ohaa [14]

Answer:

Mean = (2.2 + 2.4 + 2.5 + 2.5 + 2.6 + 2.7)/6 = 2.48

Standard deviation = √(summation(x - mean)²/n

n = 6

Summation(x - mean)² = (2.2 - 2.48)^2 + (2.4 - 2.48)^2 + (2.5 - 2.48)^2 + (2.5 - 2.48)^2 + (2.6 - 2.48)^2 + (2.7 - 2.48)^2 = 0.1484

Standard deviation = √(0.1484/6

s = 0.16

Standard error = s/√n = 0.16/√6 = 0.065

Part B

Confidence interval is written as sample mean ± margin of error

Margin of error = z × s/√n

Since sample size is small and population standard deviation is unknown, z for 98% confidence level would be the t score from the student t distribution table. Degree of freedom = n - 1 = 6 - 1 = 5

Therefore, z = 3.365

Margin of error = 3.365 × 0.16/√6 = 0.22

Confidence interval is 2.48 ± 0.22

Part C

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,

H0: µ = 2.3

For the alternative hypothesis,

H1: µ > 2.3

This is a right tailed test

Since the number of samples is small and no population standard deviation is given, the distribution is a student's t.

Since n = 6

Degrees of freedom, df = n - 1 = 6 - 1 = 5

t = (x - µ)/(s/√n)

Where

x = sample mean = 2.48

µ = population mean = 2.3

s = samples standard deviation = 0.16

t = (2.48 - 2.3)/(0.16/√6) = 2.76

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

p = 0.02

Assuming significance level, alpha = 0.05.

Since alpha, 0.05 > than the p value, 0.02, then we would reject the null hypothesis. Therefore, At a 5% level of significance, the sample data showed significant evidence that the mean absolute refractory period for all mice when subjected to the same treatment increased.

Step-by-step explanation:

7 0
3 years ago
Mike and Julie surveyed students to determine how many had a grade of A in math. They recorded their findings for each survey in
grin007 [14]

20/4 = 5

40/8 = 5

60/12 = 5

80/16 = 5


Answer is 5

6 0
3 years ago
Read 2 more answers
According to the Ruler Postulate, what does the set of points on any line correspond to?
S_A_V [24]
The correct answer is real numbers

8 0
3 years ago
Read 2 more answers
Factor the following expression using the GCF.
Jet001 [13]

Answer:

the answer to your question is 8r(d-3)

hope this helps :-)

3 0
2 years ago
Other questions:
  • Express tan B as a fraction in simplest form.
    15·1 answer
  • The edge of each cube used to build this rectangular prism is 13
    15·2 answers
  • I need to show .y work for 132 × 3​
    5·2 answers
  • (3 1/2 - 9 3/4) ÷ (-2.5)
    13·1 answer
  • Please help. Will mark brainliest. Question 1 & 2:
    15·1 answer
  • 3 times ( 2 times x )
    10·2 answers
  • The value of y varies directly with x, and y =-8 when x =2. Write the equation that relates x and y and then find y when x =3.
    10·1 answer
  • A boat ride costs $6.50 for one adult and $2.50 for one child. Which expression represents the total price a group of x adults a
    13·2 answers
  • find the area of a circle with a diameter of 4 ft ( Take pi = 3.14 ) round your solution to two decimal places. pls and Hurryyyy
    10·2 answers
  • I need help quick please
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!