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
Soloha48 [4]
2 years ago
12

the difference of two number is 28 if the larger number is three time of the smaller find the number​

Mathematics
1 answer:
Elza [17]2 years ago
5 0

Set up an equation:

3x - x = 28

Simplify:

2x = 28

Divide both sides by 2

X = 14

3(14) = 42

The numbers are 42 and 14

You might be interested in
In a study on the time that
krok68 [10]

The 95% confidence interval of the population mean, in years, is (4.3, 5.3). 4 years is not part of the confidence interval, which means that it contradicts the fact that 39% of students get their college degree in four years.

-----------------------------

To solve this question, we need to find the confidence interval for the amount of time it takes the students to get the degree.

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

-----------------------------

The first step to solve this problem is finding how many degrees of freedom,which is the sample size subtracted by 1. So

df = 80 - 1 = 79

-----------------------------

95% confidence interval

Standard level of confidence, we have to find a value of T, which is found looking at the t table, with 79 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 1.9905.

-----------------------------

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 1.9905\frac{2.2}{\sqrt{80}} = 0.5

In which s is the standard deviation of the sample and n is the size of the sample.

-----------------------------

The lower end of the interval is the sample mean subtracted by M. So it is 4.8 - 0.3 = 4.3 years.

The upper end of the interval is the sample mean added to M. So it is 4.8 + 0.3 = 5.3 years.

-----------------------------

The 95% confidence interval of the population mean, in years, is (4.3, 5.3). 4 years is not part of the confidence interval, which means that it contradicts the fact that 39% of students get their college degree in four years.

A similar question is given at brainly.com/question/24278748

6 0
3 years ago
Triangle ABC has vertices A0,0), B(3,2)and C(0,4). The triangle may be classified as
lawyer [7]

Answer:

aceite triangle

Step-by-step explanation:

because when you put it in a graph all ángles are acitr

5 0
3 years ago
Use PMT equals StartFraction Upper P (StartFraction r Over n EndFraction )Over [1 minus (1 plus StartFraction r Over n EndFracti
Zigmanuir [339]

Answer:

I think it’s best to ask your teacher

Step-by-step explanation:

Sorry I needed the points

8 0
3 years ago
K-x=y+w, for x<br> Solve the equation for each indicated variable
sveta [45]

Answer:

-x=y+w-k

-x.-1=-1.(y+w-k)

x=-y-w+k

8 0
3 years ago
Please help thanks ❗​
mojhsa [17]

Answer:

The Two Column Proof is given below.

Step-by-step explanation:

Given:

\overline{MP} \cong \overline{MN}

\overline{PO} \cong \overline{NO}

To Prove:

∠ P ≅ ∠ N

Proof:

In  Δ MPO  and Δ MNO

STATEMENT                                              REASONS  

1. MP ≅ MN                                   1. Given

2. PO ≅ NO                                  2. Given

3. MO ≅ MO                                 3. Reflexive property

4. ΔMPO ≅ ΔMNO                       4. Side-Side-Side congruence test}

5. ∠MPO ≅∠MNO                        5. Corresponding parts of congruent Triangles

i.e ∠ P ≅ ∠ N                                 ..................Proved

3 0
3 years ago
Other questions:
  • The figure shows an aerial view of a playground. If David runs around the field three times, he covers a distance of ___yards.
    10·1 answer
  • Jade wants to visit her friends but wants to know if she can visit both of them without driving over 30km. Jade lives 11.4 km of
    6·1 answer
  • What would be the answer in this question?
    5·1 answer
  • Which one do you like better Manga or Anime
    15·2 answers
  • Heloo i really need help! any helo would he appreciated!​
    11·2 answers
  • Solve<br> 7W + 3 = 5W + 9
    5·2 answers
  • Find the value of y plzzzz
    10·2 answers
  • If there are 16 boys and 32 girls in a room, fill out all of the possible ratios of boys to girls that could be made. They alrea
    7·1 answer
  • Can you help me understand this?
    7·1 answer
  • The angle of elevation from a point 25 feet from the base of a tree on level ground to the top of the tree is 30°. Find the heig
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!