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
Nezavi [6.7K]
3 years ago
5

Help please with 9 and 10 please !

Mathematics
2 answers:
malfutka [58]3 years ago
5 0

Answer:

9) The scale factor is 3/2

10) The scale factor is 4/3 and the missing length is 9

Step-by-step explanation:

9) The triangles are similar because 6/4 = 9/6 = 3/2

The scale factor is 6/4 = 3/2

10) If the rectangular gardens are similiar then the scale factor is 16/12 = 4/3

(The scale factor is always > 1)

=> 12 / x = 4/3 => 4x = 12·3 => x = 9

Lana71 [14]3 years ago
3 0

Answer:

9. The scale factor is 1.5.

10. scale factor = 0.75

    the missing side is 9m

Step-by-step explanation:

9. 3/2 = 1.5

   9/6 = 1.5

   6/4 = 1.5

10. 12/16 = 0.75

    12*0.75 = 9

You might be interested in
An environmental scientist wants to use a 95% confidence interval to estimate the mean number of hours per day her solar panel r
MissTica

Answer:

a) The 95% confidence interval for the mean number of hours per day her solar panel receives direct sunlight is between 2.5 and 11.7.

b) The confidence interval is built from a sample of 48 days. However, we can be 95% sure that for all days, the mean number of hours per day her solar panel receives direct sunlight is between 2.5 and 11.7.

Step-by-step explanation:

We have the standard deviation for the sample. So we use the t-distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 48 - 1 = 47

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 47 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.0117

The margin of error is:

M = T*s = 2.0117*2.3 = 4.6

In which s is the standard deviation of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 7.1 - 4.6 = 2.5 hours of sunlight per day

The upper end of the interval is the sample mean added to M. So it is 7.1 + 4.6 = 11.7 hours of sunlight per day

a) Compute the 95% confidence interval for the mean.

The 95% confidence interval for the mean number of hours per day her solar panel receives direct sunlight is between 2.5 and 11.7.

b) Explain your confidence interval from part (a) in context.

The confidence interval is built from a sample of 48 days. However, we can be 95% sure that for all days, the mean number of hours per day her solar panel receives direct sunlight is between 2.5 and 11.7.

6 0
3 years ago
15 PPOINTSMrs. France, a seventh-grade math teacher, is grading papers. Three students gave the following responses to the same
alina1380 [7]

Answer:student 3

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
a line t has the equation 5x-y-4=0. write down the equation of a line which passes through (1,-3), a) which is parallel to T, b)
OlgaM077 [116]
Like me and ill help you
3 0
3 years ago
Find the greatest common factor of the following monomials: 20a 46a^2 48a^6​
Ierofanga [76]
60a^5 is the answer to your question
6 0
3 years ago
How many batches of cookies can you make if you have 8 cups of flour and recipe calls for 3/4 per batch?
vodka [1.7K]

Answer:

10 batches i think, sorry if im wrong

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • When 4(0.5x+2.5y-0.7x-1.3y+4)is simplified, what is the resulting expression?
    14·2 answers
  • Use algebra tiles to find (8x2+4)-(8x2+2)
    11·1 answer
  • X
    14·2 answers
  • Apply the distributive property to create an equivalent expression (7-4n)•6
    6·1 answer
  • Y=8x^2 linear or non linear
    10·1 answer
  • 5/9 of a number is 65 find the number
    13·1 answer
  • If x is 100, what is the area of the cell phone's range?<br> BTW, it is in feet.
    12·2 answers
  • Trigonometry. Find the value of x. Round to the nearest tenth. I been stuck on it for a while I need help.
    5·1 answer
  • Mabel is working with other students from her class on a project their teacher gave them. The project is to bake a cake that use
    5·2 answers
  • Solve for xxx.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!