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
algol13
2 years ago
15

Solve for

Mathematics
2 answers:
choli [55]2 years ago
5 0

Step-by-step explanation:

x=19 ayan na yung sagot huh

lakkis [162]2 years ago
4 0

Answer:

x

=

13

+

6

=

19

Step-by-step explanation:

this is so simple

You might be interested in
Sarah claims that the thickness of the spearmint gum she produces is 7.5 one-hundredths of an inch. A quality control specialist
satela [25.4K]

Answer:

t=\frac{7.55-7.5}{\frac{0.103}{\sqrt{10}}}=1.539    

p_v =2*P(t_{(9)}>1.539)=0.158  

If we compare the p value and the significance level assumed \alpha=0.05 we see that p_v>\alpha so we can conclude that we have enough evidence to fail reject the null hypothesis.  

Step-by-step explanation:

Data given and notation  

Data: 7.65, 7.60, 7.65, 7.7, 7.55, 7.55, 7.4, 7.4, 7.5, 7.5

We can begin calculating the sample mean given by:

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

And the sample deviation given by:

s=\sart{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

And we got:

\bar X=7.55 represent the sample mean

s=0.103 represent the sample standard deviation

n=10 sample size  

\mu_o =7.5 represent the value that we want to test

\alpha=0.05 represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean is equal to 7.5 or no, the system of hypothesis would be:  

Null hypothesis:\mu = 7.5  

Alternative hypothesis:\mu \neq 7.5  

If we analyze the size for the sample is < 30 and we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic

We can replace in formula (1) the info given like this:  

t=\frac{7.55-7.5}{\frac{0.103}{\sqrt{10}}}=1.539    

P-value

The first step is calculate the degrees of freedom, on this case:  

df=n-1=10-1=9  

Since is a two sided test the p value would be:  

p_v =2*P(t_{(9)}>1.539)=0.158  

Conclusion  

If we compare the p value and the significance level assumed \alpha=0.05 we see that p_v>\alpha so we can conclude that we have enough evidence to fail reject the null hypothesis.  

3 0
3 years ago
I don’t get this answer
matrenka [14]

23 units sure does hope this helps


3 0
3 years ago
100 points and brainliest
nordsb [41]

Answer: Hello Luv......

Hope this helps. Mark me brianest please... Anna ♥

Step-by-step explanation:

Answer: -40 < T < 140

From the question, we are informed that the gas that the driver uses freezes at −40° F and evaporates at 140° F.

To get the inequality to represent the temperatures at which the gas in the truck will remain in liquid form, we should note that the temperature will be lower than 140°F but more than -40°F. This can be expressed as:

= -40 < T < 140

6 0
3 years ago
Read 2 more answers
you are going to an amusement park over spring break. the cost of admission to enter the park the park is $30 and the rides are
mash [69]

Answer:

30+6x=100

Step-by-step explanation:

100-30=70

6*11= 66

The total number of rides he can go on is 11. He will have a remaining balance of $4.00 which is not enough to pay for another ride.

Hope this helps have a wonderful day

7 0
2 years ago
Jonas has 40 marbles. He gave 1/5 of the marbles to marvin and 3/8 of the marbles to leroy. How many marbles did each boy get?
MaRussiya [10]
1/5 x 40

= 8 marbles

3/8 x 40

= 15 marbles



5 0
3 years ago
Read 2 more answers
Other questions:
  • A package of breadcrumbs to feed the ducks at the duck pond costs $0.25. How many packages of bread crumbs could be bought with
    5·2 answers
  • What are the solutions of the equation
    11·1 answer
  • HURRRY The volume of a cylinder is given by the formula V=pir2h where r is the radius of the cylinder and h is the height. Which
    9·1 answer
  • What is 4/5 of 12 inches
    13·2 answers
  • How do I convert pounds to tons?
    10·2 answers
  • In buffalo, New York the temperature was -12F in the morning. What will the temperature be if it drops 9F
    9·1 answer
  • What is the first step to solving this equation?
    13·1 answer
  • Porfa es para un examen xD
    6·2 answers
  • The radius of a circle is 7 cm. Find its area to the nearest tenth. (Please help due in an hour)
    15·1 answer
  • Line K has a slope of -5. Line j is perpendicular to line k and passes through the point (5, 9). Create the equation for line j.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!