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
strojnjashka [21]
2 years ago
8

Plz helpppppp❤️❤️❤️Urgently

Mathematics
1 answer:
Talja [164]2 years ago
3 0
Attached the photo with my work

You might be interested in
Laura ran t minutes on Monday, and 15 more minutes on Tuesday. Record using algebra: If on Wednesday, Thursday, and Friday Laura
olya-2409 [2.1K]

Monday: t minutes

Tuesday: t + 15 minutes

Wednesday: t minutes

Thursday: t minutes

Friday: t minutes

Monday+Tuesday+Wednesday+Thursday+Friday= minutes ran

t+t+15+t+t+t=

5t+15 minutes

8 0
2 years ago
Fun question: Which Disney character is your favorite?
Vlada [557]

Answer:

Belle is my fav.

Step-by-step explanation:

She loves to read books like me and I hate people who always go out there and try to impress me with something.

5 0
3 years ago
The sum of two numbers is 39, One number is 7 more than the other. Find the two numbers.
vfiekz [6]
The answer is.. 23 and 16

Hope this helps!!
5 0
3 years ago
Which Odered pair would form a proportional relationship with the point graphed below?
Tasya [4]

Answer:

idk but try searching it up

Step-by-step explanation:

3 0
3 years ago
A recent article in The Wall Street Journal compared the cost of adopting children from China with that of Russia. For a sample
denpristay [2]

Answer:

We can conclude the mean cost is larger for adopting children from Russia.

Step-by-step explanation:

To answer this question we can perform an hypothesis testing on the differences of the means with the following null and alternative hypothesis:

H_0: \mu_1\leq\mu_2\\\\H_1: \mu_1>\mu_2

The significance level we assume is 0.05.

First we calculate the mean standard error:

MSE=\frac{SSE}{df}=\frac{n_1\sigma_1^2+n_2\sigma_2^2}{(n_1-1)+(n_2-1)} =\frac{16*835^2+18*1545^2}{16-1+18-1} =1,691,314

The harmonic mean of the sample sizes is:

n_h=\frac{2}{1/n_1+1/n_2}=\frac{2}{0.0625+0.0556}=\frac{2}{0.1181}=16.94

Then we can calculate the estimated standard deviation as:

\sigma=\sqrt{\frac{2MSE}{n_h} } =\sqrt{\frac{2*1691314}{16.94} } =447

The t-statistic can be calculated as:

t=\frac{\Delta M-\Delta \mu}{\sigma}=\frac{(11045-12840)-0}{447} =\frac{-1795}{447}= -4.015

The degrees of freedom are df=n_1+n_2-2=18+16-2=32.

We can look up the P-value in a table or applet. For t=-4.015 and df=32, the P-value is 0.00017.

The P-value is smaller than the significance level, so the effect is significant and the null hyphotesis (China cost is equal or less than in Russia) is rejected.

We can conclude the mean cost is larger for adopting children from Russia.

4 0
3 years ago
Other questions:
  • At the convenience store, a 12 pack of Dr. Pepper costs $3.96. How much does each can cost?​
    14·2 answers
  • How many liters are in 5000 ml
    15·1 answer
  • Can someone plz tell me the answer and response plz
    14·1 answer
  • Which is the first incorrect step in the solution shown above ?
    11·2 answers
  • −6p = 48<br> what does p equal
    8·2 answers
  • What is. . .<br> 7/9 + 5/6 · 1/3
    15·2 answers
  • I need help on this i don't understand this. plz help with steps plz. thanks!!
    5·1 answer
  • Wells College in Aurora, New York was previously an all-girls college. In 2005, the college began to allow boys to enroll. By 20
    12·1 answer
  • Pls help (ty and I just clicked sas cause I don’t know sorry)
    7·2 answers
  • Use natural logarithms to solve the equation. Round to the nearest thousandth.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!