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
slega [8]
3 years ago
6

Can someone help me?

Mathematics
1 answer:
geniusboy [140]3 years ago
7 0

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask me in the comments below ;)

You might be interested in
Can you answer this question?​
Debora [2.8K]

Answer: y= 3 times 2 to the power x. Second answer

Step-by-step explanation:

if you plug in 0 for x, y= 3x 1= 3

if you plug in 1 for x y= 3 x 2 = 6

Look at the x values and y values

(0,3) and (1, 6) on the graph. It matches answer number 2. Remember, 2 raised to the power 0 = 1 and 3 times 1 = 3. And 2 raised to the power 1 =2 and 3 times 2 = 6.

3 0
1 year ago
Required information An article presents a new method for timing traffic signals in heavily traveled intersections. The effectiv
Natasha2012 [34]

Answer:

652.6-2.01\frac{311.7}{\sqrt{50}}=563.997    

652.6+2.01\frac{311.7}{\sqrt{50}}=741.203    

So on this case the 95% confidence interval would be given by (563.997;741.203)    

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

\bar X=652.6 represent the sample mean for the sample  

\mu population mean (variable of interest)

s=311.7 represent the sample standard deviation

n=50 represent the sample size  

Soltuion to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

In order to calculate the critical value t_{\alpha/2} we need to find first the degrees of freedom, given by:

df=n-1=50-1=49

Since the Confidence is 0.95 or 95%, the value of \alpha=0.05 and \alpha/2 =0.025, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.025,49)".And we see that t_{\alpha/2}=2.01

Now we have everything in order to replace into formula (1):

652.6-2.01\frac{311.7}{\sqrt{50}}=563.997    

652.6+2.01\frac{311.7}{\sqrt{50}}=741.203    

So on this case the 95% confidence interval would be given by (563.997;741.203)    

6 0
3 years ago
Translate to an algebraic expression 35 less than y. 40 POINTS EASY!!!!!!!!!
alina1380 [7]

Answer:

Step-by-step explanation:

y - 35

7 0
3 years ago
Quentin buys a model car every year. The first time he bought a model car, in Year 0, it cost $19.40. He notices the price is ge
vitfil [10]

Answer: the graph increases from left to right, since the price goes up. If you were to actually graph this, the years would be on the bottom and the price would be on the left side, so since the price is going up, so is the graph. :)


6 0
3 years ago
What is (8x-30)+6x+(2x+10) simplified?
VMariaS [17]

Answer:

16x-20

Step-by-step explanation:

(8x-30)+6x+(2x+10)

8x-30+6x+2x+10

8x+6x+2x-30+10

14x+2x-20

16x-20

3 0
2 years ago
Other questions:
  • What is 30+234567654567
    11·2 answers
  • 5/8 0.67 1.2 3/5 Greatest to least
    12·1 answer
  • Evaluate 7 + (-3X2) for x = 0.
    10·1 answer
  • Please help me! i really need help​
    11·1 answer
  • Which of the statements about the following quadratic equation is true? 6x^2-8=4x^2+7x
    8·2 answers
  • In 2010, the population of Houston, Texas, was 2,099,451 and the population density was 3,501 people per square mile. What was H
    9·2 answers
  • PLZ help pic included
    8·1 answer
  • Leila went to see a baseball game. The game started at 11:39AM and ended at 3:15 PM. How long was the game?
    8·2 answers
  • A right rectangular prism is  5 1/4in. wide, 12 1/2.in long. and 4 in tall,What is the volume of the prism?
    5·2 answers
  • In 1980 Kim was 16 and Anna was 8. When was Kim age four times Anna's age?​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!