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
Lilit [14]
2 years ago
9

Which of the following figures has reflected over the y-axis? 40 POINTS! PLEASE ANSWER!

Mathematics
2 answers:
Tasya [4]2 years ago
8 0

Answer:

its a

Step-by-step explanation:

Sonja [21]2 years ago
6 0

Answer:

the third one

Step-by-step explanation:

You might be interested in
Can i get some help with #5 and below thankyou
trasher [3.6K]

Answer:

v8

Step-by-step explanation:

what the other guy said!

6 0
3 years ago
The manager of a fleet of automobiles is testing two brands of radial tires and assigns one tire of each brand at random to the
Darya [45]

Answer:

Brand 1    Brand 2    Difference

37734       35202        2532

45299      41635         3664

36240      35500        740

32100      31950         150

37210       38015       −805

48360     47800        560

38200    37810          390

33500    33215        285

Sum of difference = 2532+ 3664+740+150 −805+  560 +390 +285 = 7516

Mean = d=\frac{7516}{8}

Mean = d=939.5

a) d= 939.5

\text{Sample Standard deviation, s} = \sqrt{\dfrac{(x-\bar{x})^2}{n-1}}

=\sqrt{\dfrac{(2532-939.5)^2+(3664-939.5)^2+(740-939.5)^2 ...+(285-939.5)^2}{8-1}}

=1441.21

b)SD= 1441.21

c)Calculate a 99% two-sided confidence interval on the difference in mean life.

confidence level =99%

significance level =α= 0.01

Degree of freedom = n-1 = 8-1 =7

So, t_{\frac{\alpha}{2}}=3.499

Formula for confidence interval = \left( \bar{X} \pm t_{\frac{\alpha}{2}} \times \frac{s}{\sqrt{n}} \right)

Substitute the values

confidence interval = 939.5 \pm 3.499 \times \frac{1441.21}{\sqrt{8}} \right)

confidence interval = 939.5 - 3.499 \times \frac{1441.21}{\sqrt{8}} \right) to  = 939.5 + 3.499 \times \frac{1441.21}{\sqrt{8}} \right)

Confidence interval −843.396\ to  2722.396

8 0
2 years ago
I need help I am trying to find ft
Rus_ich [418]

1 foot = 12 inches

 divide 69 by 12

69/12 = 5.75 feet

7 0
3 years ago
95=-8x+7 whats the answer
Lubov Fominskaja [6]

Answer:

= − 1 1

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A plane flew 500 miles in 40 minutes. How long would it take to fly 1 mile
mina [271]
I believe it’s 12.5 miles
3 0
2 years ago
Other questions:
  • Plz help w/ Geometry!!! Will give Brainliest!!!
    9·1 answer
  • Convert 19(pi)/4 to degrees
    8·1 answer
  • If two polynomial equations have real solutions, then will the equation that is the result of adding, subtracting, or multiplyin
    10·2 answers
  • If all direct materials are added at the end of the production process, and the units have made it 50% of the way through the pr
    12·1 answer
  • Question 58 a through f.
    10·1 answer
  • Someone help me with 5.84 divide 4
    12·2 answers
  • Plzzzzz help meeEEEE ALL 3 REWARD BRAINLIESTT
    11·1 answer
  • Write the slope-intercept form of the equation<br> 15x-3y=3
    12·1 answer
  • Please help me x^2/x^2 times x^2
    10·1 answer
  • Will someone help me with this
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!