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
Nookie1986 [14]
2 years ago
9

What equation is equivalent to the equation 9x - 13 = 4x + 32

Mathematics
1 answer:
Zigmanuir [339]2 years ago
8 0
I’m guessing if you simplify this it’s gonna be x=6
You might be interested in
3. <br> Point C(9,-6) is dilated using a scale factor<br> of 2/3. What are the coordinates of C"?
bonufazy [111]

Answer:3.08e

Step-by-step explanation:mujwjwieekedkd

4 0
3 years ago
Read 2 more answers
Solve the following system of equations and show all work.<br> y = 2x^2 +9x<br> y = 4x + 25
Genrish500 [490]

Answer:

x = 5/2 thì y = 35 và x = -5 thì y = 5

Step-by-step explanation:

thay y = 4x + 25 vào phương trình y = 2x ^ 2 + 9x ta có:

4x + 25 = 2x ^ 2 + 9x

⇒2x ^ 2 + 5x - 25 = 0

⇒ x = 5/2 và x = -5

thay x = 5/2 vào phương trình y = 4x + 25 ⇒ y = 4*(5/2) + 25 = 35

thay x = -5 vào phương trình y = 4x + 25 ⇒ y = 4*(-5) + 25 = 5

7 0
3 years ago
PLS HELP DUE IN AN HOUR!
Flauer [41]

answer is attached with solution

answer is 5/17

8 0
2 years ago
PLEASE HELP ASAP!!!!!!!
umka2103 [35]

Answer:

dum there is part A prat B and C

Step-by-step explanation:

5 0
3 years ago
The following data were collected from 12 rain gauges in a park. Build a 95% CI for the mean rainfall at the park.
dybincka [34]

Answer:

Critical values:t_{\alpha/2}=-2.201 t_{1-\alpha/2}=2.201

95% confidence interval would be given by (3.646;4.472)

Step-by-step explanation:

1) 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".

The data is:

4.65 3.89 2.73 4.35 3.80 4.86 4.33 4.37 4.76 4.05 3.05 3.87

2) Compute the sample mean and sample standard deviation.

In order to calculate the mean and the sample deviation we need to have on mind the following formulas:  

\bar X= \sum_{i=1}^n \frac{x_i}{n}

s=\sqrt{\frac{\sum_{i=1}^n (x_i-\bar X)}{n-1}}

=AVERAGE(4.65,3.89,2.73, 4.35, 3.8, 4.86, 4.33, 4.37, 4.76, 4.05, 3.05, 3.87)

On this case the average is \bar X= 4.059

=STDEV.S(4.65,3.89,2.73, 4.35, 3.8, 4.86, 4.33, 4.37, 4.76, 4.05, 3.05, 3.87)

The sample standard deviation obtained was s=0.6503

3) Find the critical value t* Use the formula for a CI to find upper and lower endpoints

In order to find the critical value we need to take in count that our sample size n =12 <30 and on this case we don't know about the population standard deviation, so on this case we need to use the t distribution. Since our interval is at 95% of confidence, our significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025. The degrees of freedom are given by:

df=n-1=12-1=11

We can find the critical values in excel using the following formulas:

"=T.INV(0.025,11)" for t_{\alpha/2}=-2.201

"=T.INV(1-0.025,11)" for t_{1-\alpha/2}=2.201

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

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

And we can use Excel to calculate the limits for the interval

Lower interval : "=4.059 -2.201*(0.6503/SQRT(12))" =3.646

Upper interval :  "=4.059 +2.201*(0.6503/SQRT(12))" =4.472

So the 95% confidence interval would be given by (3.646;4.472)

8 0
3 years ago
Other questions:
  • Can the values be added or subtracted? If one value needs to be converted to another, describe the conversion.
    15·1 answer
  • Hello can you please help me out on this question posted picture
    8·1 answer
  • You earn $5 for every friendship bracelet you sell. Right and solve an equation to find the number of bracelets you have to sell
    6·1 answer
  • What is the quotient? StartFraction 7 Superscript negative 4 Over 7 Superscript negative 9 EndFraction
    14·1 answer
  • Write the equation of the function g(x) if g(x) = f(x – 3) +1 and f(x) = x3 + 1.
    11·1 answer
  • Ava and Kelly ran a road race, starting from the same place at the same time. Ava ran at an average speed of 6 miles per hour. K
    12·1 answer
  • Hi everyone! I got another problem I need help on over probability. No links or you will be reported!!!
    7·1 answer
  • Work out 2 1/7 + 1 1/4​
    15·2 answers
  • 6 2/7 * 3 3/12= ? Anyways hi! I'm bo.red lol
    7·1 answer
  • Help asp, I can’t find the answers:P
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!