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
maxonik [38]
3 years ago
11

Rico is estimating 139 x 18 Find his mistake and correct it. 100 x 10 =1,000

Mathematics
1 answer:
mel-nik [20]3 years ago
4 0
139 is suppose to be 140 and 18 is suppose to be 20, 140 x 20 = 2800
Home this works
You might be interested in
The contents of a sample of 26 cans of apple juice showed a standard deviation of 0.06 ounces. We are interested in testing to d
NikAS [45]

Answer:

Option b. should not be rejected

Step-by-step explanation:

We are given that the contents of a sample of 26 cans of apple juice showed a standard deviation of 0.06 ounces.

We have to test whether the variance of the population is significantly more than 0.003, i.e.;

  Null Hypothesis, H_0 : \sigma = \sqrt{0.003}

Alternate Hypothesis, H_1 : \sigma > \sqrt{0.003}

The test statistics used here for testing variance is;

          T.S. = \frac{(n-1)s^{2} }{\sigma^{2} } ~ \chi^{2}__n_-_1

where, s = sample standard deviation = 0.06

           n = sample size = 26 cans

So, Test statistics = \frac{(26-1)0.06^{2} }{0.003 } ~ \chi^{2}__2_5

                            = 30

So, at 5% level of significance chi square table gives critical value of 37.65 at 25 degree of freedom. Since our test statistics is less than the critical so we have insufficient evidence to reject null hypothesis.

Therefore, we conclude that null hypothesis should not be rejected and variance of population is 0.003.

5 0
3 years ago
What's the hcf and lcm of 5and 7​
svetlana [45]

Answer:

gcf, hcf, gcd (5; 7) = 1: greatest (highest) common factor (divisor), calculated. Coprime numbers (relatively prime). Numbers have no common prime factors.

7 0
3 years ago
Read 2 more answers
Solve the equation <br> |x-3| -10=-5
Deffense [45]

Answer:

x=8                     x=-2

Step-by-step explanation:

|x-3| -10=-5

Add 10 to each side

|x-3| -10+10=-5+10

|x-3| =5

Now separate into two equations , one positive and one negative

x-3 = 5           x-3 = -5

Add 3 to each side

x-3+3 = 5+3    x-3+3 = -5 +3

x=8                     x=-2

5 0
3 years ago
Read 2 more answers
Please help answer <br> Will give brainlst
Genrish500 [490]

Answer:

I think it would be A

5 0
2 years ago
What does why y equal
Novay_Z [31]

Answer:

y=2/3x+4/3

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Number 14 please help
    12·2 answers
  • Which of the following matches a quadrilateral with the listed characteristics below ?
    7·2 answers
  • Rosario works for a small medical practice. Only three employees work in the office, so Rosario is often asked to take on additi
    11·2 answers
  • (6x3 + 18x2) − 3x2 =
    6·2 answers
  • Tyler wants to use $300 he has saved to buy a new guitar and join a music club. The guitar costs $140. The music club has a $25
    8·1 answer
  • Which of the following values are in the range of the function graphed below? Check all that apply
    5·1 answer
  • What is 525/1000 in simplest form?
    11·1 answer
  • What is the value of x in the equation 4(2x + 10) = 0? (1 point) –5 –7 5 7
    13·2 answers
  • Can somebody help me
    6·2 answers
  • Teacher Thomas did a survey of primary 6 students to find out how the students go to school.the result are down. given that 110
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!