Question

A psychologist is investigating the levels of test anxiety in various university courses. Anxiety is measured on a scale ranging from 0 to 100, where 0 indicates the complete absence of anxiety and 100 represents an extreme level of anxiety. From the data obtained, it has been discovered that the psychology score is triple that of nursing, and in turn, the latter has a score 10 points lower than the nutrition major. Furthermore, the score in the veterinary degree is 15 points higher than that of nutrition. Finally, if we add the scores of all the races, we will obtain a total of 173 points. Pose the equation that represents the situation described in the previous problem and determine: What is the score that psychology obtained regarding its anxiety level before the exams?

144

likes
722 views

Answer to a math question A psychologist is investigating the levels of test anxiety in various university courses. Anxiety is measured on a scale ranging from 0 to 100, where 0 indicates the complete absence of anxiety and 100 represents an extreme level of anxiety. From the data obtained, it has been discovered that the psychology score is triple that of nursing, and in turn, the latter has a score 10 points lower than the nutrition major. Furthermore, the score in the veterinary degree is 15 points higher than that of nutrition. Finally, if we add the scores of all the races, we will obtain a total of 173 points. Pose the equation that represents the situation described in the previous problem and determine: What is the score that psychology obtained regarding its anxiety level before the exams?

Expert avatar
Corbin
4.6
107 Answers
Solución: Sean x, y, z y t las puntuaciones obtenidas por las carreras de psicología, enfermería, nutrición y veterinaria, respectivamente. De la afirmación "la puntuación de psicología es el triple que la de enfermería", x=3y Resolviendo para y en términos de x, y=\frac{x}{3} De la afirmación “[enfermería] tiene un puntaje 10 puntos menor que la carrera de nutrición”, y=z-10 Resolviendo para z en términos de y, z=y+10 Sustituyendo y en términos de x, z=\frac{x}{3}+10 Del enunciado “la puntuación en la carrera de veterinaria es 15 puntos superior a la de nutrición”, t=z+15 Sustituyendo z en términos de x, t=\frac{x}{3}+10+15 t=\frac{x}{3}+25 Del enunciado “si sumamos las puntuaciones de todas las carreras, obtendremos un total de 173 puntos”, x+y+z+t=173 Sustituyendo z=y, z y t en términos de x, x+\frac{x}{3}+\frac{x}{3}+10+\frac{x}{3}+25=173 2x+35=173 2x=138 x=69 Respuesta: La puntuación que obtuvo Psicología respecto a su nivel de ansiedad antes de los exámenes es igual a 69.

Frequently asked questions (FAQs)
What is the value of f(3) in the function f(x) = 2x + 5?
+
What is the shape of the graph of a linear equation?
+
Math Question: What is the quadratic formula, and how can it be used to solve quadratic equations?
+
New questions in Mathematics
How to find the value of x and y which satisfy both equations x-2y=24 and 8x-y=117
-442/c+5=26 what is c?
-8+3/5
90 divided by 40
A food delivery company charges on average a delivery fee of $5 per order (including food and shipping) and has monthly fixed costs of $600. If the average cost of each meal delivered that is revenue for the company is $10 and the company has a monthly profit of $800, how many orders must they deliver per month?
4X^2 25
The main cost of a 5 pound bag of shrimp is $47 with a variance of 36 if a sample of 43 bags of shrimp is randomly selected, what is the probability that the sample mean with differ from the true mean by less than $1.4
What is the r.p.m. required to drill a 13/16" hole in mild steel if the cutting speed is 100 feet per minute?
According to a survey in a country 27% of adults do not own a credit card suppose a simple random sample of 800 adults is obtained . Describe the sampling distribution of P hat , the sample proportion of adults who do not own a credit card
Given (3x+2)E [2;14] how much money (in soles) does Sophia have if numerically it is the greatest value of x?
sum of 7a-4b+5c, -7a+4b-6c
The question is using rule 72 determine Kari wants to save 10,000 for a down payment on a house. Illustrate the difference in years it will take her to double her current 5,000 savings based on 6%, 12% and 18% interest rate .
Professor Vélez has withdrawn 40 monthly payments of $3,275 from her investment account. If the investment account yields 4% convertible monthly, how much did you have in your investment account one month before making the first withdrawal? (Since you started making withdrawals you have not made any deposits.)
Next%C3%B3n%2C+we+are+given+a+series+of+Tri%C3%A1angles+Right%C3%A1angles+%3Cbr%2F%3Ey+in+each+one+of+them+ are+known+2%28two%29+measurements+of+sides.+%3Cbr%2F%3Elet's+determine+all+trigonom%C3%A9tric+ratios.
If the regression equation is given by 4x –y + 5 = 0, then the slope of regression line of y on x is
Let f and g be defined in R and suppose that there exists M > 0 such that |f(x) − f(p)| ≤ M|g(x) − g(p)|, for all x. Prove that if g is continuous in p, then f will also be continuous in p.
prove that for sets SS, AA, BB, and CC, where AA, BB, and CC are subsets of SS, the following equality holds: (A−B)−C=(A−C)−(B−C)
At the end of a lively discussion within your study group, your class neighbor, for the relevance of your points of view, asks your opinion on the subject of their debate which is the following question Am I the slave of my unconscious? Solve the problem posed by this subject in an argumentative production.
Solve for B write your answer as a fraction or as a whole number. B-1/7=4
X^3 - x^2 - 4 = 0, what are the values of x?