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
sveta [45]
3 years ago
7

Silvia is n years old. She has a twin sister. What is the total of their ages?

Mathematics
1 answer:
natka813 [3]3 years ago
8 0

Answer:  2n

Step-by-step explanation:

Silvia is n, sister is n, total is n+n=2n.

You might be interested in
Reggie and jay go for a walk morning.reggie walks 2 1/4 miles. Jay walks 1 3/8 miles less than Reggie. What is the total distanc
jek_recluse [69]
Jay walks 2 1/4 miles which if you double it so the denominators are e same for both 2 1/4 and 1 1/8 then your answer will be 18/8 (Jay) and 9/8 (Reggie). Meaning that Reggie walks have the distance Jay walks.
7 0
3 years ago
PLS HELP ME ! ! ! ! !
emmainna [20.7K]

Answer:

D (0, 2)

General Formulas and Concepts:

<u>Algebra I</u>

The y-intercept is the y value when x = 0. Another way to reword that is when the graph crosses the y-axis.

Slope-Intercept Form: y = mx + b

  • m - slope
  • b - y-intercept

Step-by-step explanation:

<u>Step 1: Define</u>

y = 3/4x + 2

<u>Step 2: Break Function</u>

<em>Identify Parts</em>

Slope <em>m</em> = 3/4

y-intercept <em>b</em> = 2

8 0
2 years ago
2 For each figure, are 21 and 22 adjacent angles or vertical angles? Explain.<br> b.<br> a.<br> 2
kupik [55]

Answer:

a is vertical and b is adjacent angles

3 0
2 years ago
An ornithologist has 4 bird feeders at separate locations. She wonders if birds are equally likely to visit each of the feeders.
Marianna [84]

Answer:

the x² test statistic 13.71

Option a) 13.71 is the correct answer.

Step-by-step explanation:

Given the data in the question;

Feeder                     1      2      3       4

Observed visits; o_i  60   90   92    58

data sample = 300

Expected e_i = 300 / 4 = 75

the x² test statistic = ?

X^2_{stat = ∑[ (o_i - e_i)²/e_i]

X^2_{stat = [ (60 - 75)² / 75 ] + [ (90 - 75)² / 75 ] + [ (92 - 75)² / 75 ] + [ (58 - 75)² / 75 ]

X^2_{stat = [ 3 ] + [ 3 ] + [ 3.8533 ] + [ 3.8533 ]

X^2_{stat = 13.7066 ≈ 13.71

Therefore, the x² test statistic 13.71

Option a) 13.71 is the correct answer.

7 0
2 years ago
Read this scenario and answer the question that follows it.
Aleks [24]
By increasing the number of blue widgets supplied
5 0
2 years ago
Read 2 more answers
Other questions:
  • Please help with this problem?
    10·1 answer
  • A value of a certain stock went up by 12% . Which functions can be used to find the current value of the stock that has an origi
    6·1 answer
  • The police department in Mansville employs 54 men and 36 women. What percent of the total are men? What is the answer to this qu
    6·2 answers
  • Ms. Reyes is buying colored pencils for her art class. The table below shows the different sizes of boxes of pencils. What is th
    6·2 answers
  • From the top of a tower, an object which is 97 m away from the base of the tower, is at a 37° angle of depression.
    9·1 answer
  • I need anyone’s help please. I will give the best answer brainliest.
    11·1 answer
  • Help me and show your work.
    10·1 answer
  • What is -8 divide 0?
    9·2 answers
  • Graph the following equations on graph paper or in your calculator.
    11·1 answer
  • Can you please help me out??
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!