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
SVEN [57.7K]
3 years ago
14

These two scalene triangles are similar with a scale of 7:47:4. What is true about these figures?

Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
4 0
The ratio of the corresponding sides is in the ratio 7:4
The ratio of the areas is 7^2:4^2 = 49:16.


You might be interested in
Use the results from a survey of a simple random sample of 1176 adults. Among the 1176 respondents, 77% rated themselves as abov
Serjik [45]

Using the sample data to test the hypothesis, we have that:

  • The actual number of respondents who rated themselves as above average drivers is 906.
  • The p-value of the test is 0, which is less than the standard significance level of 0.05, thus we can conclude that the proportion respondents who rated themselves as above average drivers is greater than 0.7.

77% of the sample of 1176 adults rated themselves as above average drivers, that is:

0.77(1176) = 906.

Thus, the actual number of respondents who rated themselves as above average drivers is 906.

At the null hypothesis, we test if the proportion is \displaystyle \frac{7}{10} = 0.7, that is:

H_0: p = 0.7

At the alternative hypothesis, we test if the proportion is greater than 70%, that is:

H_1: p \geq 0.7

The test statistic is given by:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

In which:

  • \overline{p} is the sample proportion.
  • p is the proportion tested.
  • n is the size of the sample.

In this problem, the parameters are \overline{p} = 0.77, p = 0.7, n = 1176.

Thus, the value of the test statistic is:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

z = \frac{0.77 - 0.7}{\sqrt{\frac{0.7(0.3)}{1176}}}

z = 5.24

The p-value of the test is the probability of finding a sample proportion above 0.77, which is <u>1 subtracted by the p-value of z = 5.24</u>.

Looking at the z-table, z = 5.24 has a p-value of 1.

1 - 1 = 0.

The p-value of the test is 0, which is less than the standard significance level of 0.05, thus we can conclude that the proportion respondents who rated themselves as above average drivers is greater than 0.7.

A similar problem is given at brainly.com/question/24330815

7 0
2 years ago
Kim is thinking of two numbers the quotient is 4 and the difference is 27 what are the two numbers
Ymorist [56]

9 an 36 are the two numbers that Kim is thinking because

5 0
3 years ago
Solve the equation 5.4g + 4 = 1.4g +20.
katovenus [111]
A. g=4
b. first you're going to subtract 1.4g from both sides;
5.4g + 4 - 1.4g = 1.4g + 20 - 1.4g
then simplify it;
4g+4=20
then, you'll subtract 4 from both sides;
4g + 4 - 4 = 20 - 4
then simplify again;
4g=16
lastly, you will divide 4 from both sides;
4g/4 = 16/4
since 16/4=4, then g=4
5 0
3 years ago
9(5r-2) and 14r-7 yes or no to tell if this expression is equivalent or not
mixas84 [53]

Answer:

No instead of doing multiplication u did division

Step-by-step explanation:

This equation is called distributive property where u multiply the answer from the outside by the inside number

4 0
3 years ago
What is the value of g 6
soldier1979 [14.2K]

Answer:

9.8

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Please help! <br> I dont understand this and I need help with it.
    15·1 answer
  • WILL GIVE BRAINLIST AS SOON AS I CAN... is this 6??​
    12·1 answer
  • What is the smallest number? 1/6, - 1/3, - 5/7, -3/6
    15·1 answer
  • 10q + 8 - 9q + 12 = 35. <br><br> q = ?
    14·2 answers
  • 10 cm
    9·1 answer
  • Ms. Strauss fills gum and trinket machines in front of grocery stores. In the trinket machine, there tattoos and stickers. If Mr
    9·1 answer
  • Find S? Please help, thank you :)
    7·1 answer
  • An account earns simple interest. Find the annual interest rate.
    7·1 answer
  • Im lazy dont ask please-
    13·1 answer
  • Which is bigger? 1/3 foot or 5 inches? It can also be equal.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!