answer.
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
kicyunya [14]
2 years ago
11

Use the expression (a+b)(c-d)+9e(a+b)(c−d)+9eleft parenthesis, a, plus, b, right parenthesis, left parenthesis, c, minus, d, rig

ht parenthesis, plus, 9, e to find an example of each kind of expression.
Kind of expression
Example

Mathematics
1 answer:
jek_recluse [69]2 years ago
8 0

Answer:

Difference: ¨c-d¨ variable: ¨a¨ coefficient: ¨9¨

Step-by-step explanation:

Just trust me bro

You might be interested in
The approximate line of best fit for the given data points, y = −2x − 2, is shown on the graph.
Lorico [155]

Answer:

2

Step-by-step explanation:

I think this is the anser because it went fom -5 to 5 so maybe it goes like that for the answer.

6 0
1 year ago
Read 2 more answers
Day care centers expose children to a wider variety of germs than the children would be exposed to if they stayed at home more o
USPshnik [31]

Answer:

a) This is an Observational Study because in this kind of study investigators observe subjects and measure variables of interest without assigning treatments to the subjects. Here, the Gilham et al. (2005) studied two different groups where no treatment or intervention was done. These groups were independent of each other.

b) proportions of children with significant social activity in children with acute lymphoblastic leukemia = 1020/1272 = 0.80

proportions of children with significant social activity in children without acute lymphoblastic leukemia = 5343/6238 = 0.86

c) Odds ratio can be calculated using the following formula:

OR= \frac{a/b}{c/d}

where: a - Number in exposed group with positive outcome(here this means number of children with significant social activity associated with acute lymphoblastic leukemia)

b- Number of children without social activity having with acute lymphoblastic leukemia

c- Number of children with social activity having without acute lymphoblastic leukemia

d- Number of children without social activity having without acute lymphoblastic leukemia

OR= \frac{1020/252}{5343/895}

OR= 0.6780

d) The 95% confidence interval of this Odds Ratio is 0.5807 to 0.7917.

e) Since the odds ratio lies in this confidence interval indicate that the amount of social activity is associated with acute lymphoblastic leukemia. The children with more social activity have a higher occurrence of acute lymphoblastic leukemia.

8 0
1 year ago
13. En un pueblo, 5 personas escucharon una noticia. En una hora, cada una de ellas
Vera_Pavlovna [14]

Answer:

En 5 horas se habrá enterado todo el pueblo.

Step-by-step explanation:

Sabemos que en un pueblo 5 personas escucharon una noticia.

Una hora más tarde, cada una de ellas le contó la noticia a otras 5.

Luego, éstas contaron la noticia a otras 5 y así sucesivamente.

Nadie cuenta ni escucha la noticia más de una vez y en ese pueblo hay un poco más de 19000 habitantes.

La ecuación a desarrollar para resolver el problema es la siguiente :

Comenzamos con 5 personas que escucharon la noticia a la ''hora 0''.

Una hora más tarde, cada una de ellas le contó a 5 personas, es decir , pasada la primera hora tendremos :

5+5^{2}=30 (I)

Las 5 personas originales de la ''hora 0'' más 25 personas que se enteraron pasada la primera hora. La ecuación que planteamos es la siguiente :

5^{1}+5^{2}+5^{3}+...+5^{x}>19000 (II)

Buscamos el valor de x que satisface la ecuación (II).

Probando y realizando las sumas encontramos que :

5^{1}+5^{2}+5^{3}+5^{4}+5^{5}+5^{6}>19000

19530>19000

El valor de x que satisface (II) es x=6.

Para hallar el número de horas nos fijamos que en (I) el valor del mayor exponente del 5 es el número 2. Para ese valor 2, el tiempo que pasó es una hora.

Entonces para nuestro x=6, el número de horas que pasaron son 5 horas (1 menos que el valor de x)

Todo el pueblo se habrá enterado en 5 horas de la noticia.

7 0
2 years ago
An old rectangular tank with length 0.3 m could hold 154 L of water. A new similar tank has a length of 1.5 m. What is the capac
dimaraw [331]
The length of the new tank is 5 times bigger than the old one, so 154×5=770. As a result, the capacity of the new tank is 770L. Hope it help!
6 0
2 years ago
Read 2 more answers
Explain why there are two sine ratios, two cosine ratios, and two tangent ratios for any right triangle
taurus [48]
Each angle has a sin, cos, and tan associated with it.
in a right angled triangle there are two other angles which each have ratios.
5 0
1 year ago
Read 2 more answers
Other questions:
  • A cell doubles every 15 minutes. If there is 1 cell at noon, how many cells will there be at 3 p.m.? Show work.
    7·2 answers
  • Which of these strategies can be used when there are nine people available for a game of basketball?
    9·2 answers
  • Trisha Long wants to buy a boat in five years. She estimates the boat will cost $15,000 at that time. What must Trisha deposit t
    8·2 answers
  • How do i work this problem sin(2cos^-1 1/11)
    9·1 answer
  • 1. Let’s assume the following statements are true: Historically, 75% of the five­star football recruits in the nation go to univ
    9·1 answer
  • A recent article in the Cincinnati Enquirer reported that the mean labor cost to repair a heat pump is $90 with a standard devia
    11·2 answers
  • The distribution of the number of siblings for students at a large high school is skewed to the right with mean 1.8 siblings and
    12·1 answer
  • If a and b are integers,what conditions would make a×b > 0?​
    9·1 answer
  • 8,900 incoming freshman to a university take an entrance exam, with the top 10% being offered admission to the university's hono
    6·1 answer
  • The mass of 1/2pint of milk is 303 g.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!