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
frez [133]
3 years ago
8

What is this property 3+(2+7)= 3+(7+2)

Mathematics
1 answer:
RSB [31]3 years ago
5 0

Answer: Associative prop

Step-by-step explanation:

Associative Property of Addition (Numbers) 5 + (6 + 7) = (5 + 6) + 7

You might be interested in
Angela invested $4000 in an account that earns 5% interest yearly (simple interest). She forgets about it for 12 years. What is
harina [27]

Answer:

$6400

Step-by-step explanation:

4000x.05=200× 12=2400+4000=$6400

4 0
3 years ago
Classify the expression, name the operation(s) and identify any variables. 3s – 5
vladimir1956 [14]

Answer:

4

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Convert: 4 gal 3 qt = [ qt​
Firlakuza [10]

Answer:

19 quarts can i get brainliest

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Evaluate the expression 4 1/2 ÷ 3/4
Darya [45]

Answer: 6

Step-by-step explanation:

7 0
2 years ago
A researcher claims that the variation in the salaries of elementary school teachers is greater than the variation in the salari
guajiro [1.7K]

Answer:

a

The null hypothesis is  H_o :  \sigma^2_1 = \sigma^2 _2

The alternative hypothesis is H_a :  \sigma_1 ^2 > \sigma^2_2

b

F_{critical} = 1.8608

c

F = 2.9085

d

    The decision rule is  

Reject the null hypothesis

e

There is sufficient evidence to support the researchers claim

Step-by-step explanation:

From the question we are told that

 The first sample size is  n_1 = 30

 The sample variance for elementary school is  s^2_1 = 8324

 The second sample size is  n_2 = 30

  The sample variance for the secondary school is  s^2_2 = 2862

   The significance level is  \alpha = 0.05

The null hypothesis is  H_o :  \sigma^2_1 = \sigma^2 _2

The alternative hypothesis is H_a :  \sigma_1 ^2 > \sigma^2_2

Generally from the F statistics table  the critical value of \alpha = 0.05 at first and  second degree of freedom df_1 = n_1 - 1 = 30 - 1 = 29 and  df_2 = n_2 - 1 = 30 - 1 = 29 is  

         F_{critical} = 1.8608

Generally the test statistics is mathematically represented as

       F = \frac{s_1^2 }{s_2^2}

=>   F = \frac{8324 }{2862}

=>   F = 2.9085

Generally from the value obtained we see that  F >  F_{critical } Hence

   The decision rule is  

Reject the null hypothesis

    The conclusion is  

  There is sufficient evidence to support the researchers claim

   

4 0
2 years ago
Other questions:
  • What is a FREAKIN ratios
    6·2 answers
  • What's the answer to this??
    9·1 answer
  • Help needed asap!!,.........
    7·1 answer
  • Find how much was invested
    6·1 answer
  • One pound is approximately equal to 0.5 kilograms.About how many kilograms is 3 pounds
    10·2 answers
  • Which triangle on the coordinate grid is a translation of triangle F? triangle ___​
    9·1 answer
  • During a winter storm, a ski resort received 9 inches of snow in 12 hours
    13·1 answer
  • What does x equal in 6x + 9 = -12
    5·2 answers
  • Can someone answer this please
    10·1 answer
  • Larry is reroofing his house. each side of the roof measures 14 feet from the eave to the ridge. the horizontal distance between
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!