Seudónimo Seudónimo

03-03-2016
Mathematics

contestada

If y is proportional to x and y = -15 when x = -20, what is the value of x when y = 12?

Respuesta :

Аноним Аноним

03-03-2016

x1= -20
x2= x2
y1= -15
y2= 12

x1 : x2 :: y1 : y2
-20 : x :: -15: 12

Means = x and -15
Extremes= -20 and 12

Product of mean = Product of extremes
-15x = -20*12
x = -240/-15
x2 = 16

Answer Link

Otras preguntas

Using the equation y=ax^2+bx+c to represent a parabola on a graph, which statement is true?1) If b is negative, the parabola opens downward2) If a is negative,

What is the product of (x+1) and (2x^2+3x-1)?

Jonathan has been on a diet since January 2013. So far, he has been losing weight at a steady rate. Bases on monthly weigh-ins, his weight, w, can be modeled by

how many books did Harriet beecher stowe write?

Using the equation y=ax^2+bx+c to represent a parabola on a graph, which statement is true?1) If b is negative, the parabola opens downward2) If a is negative,

What is the value of x in 15x-10= 20

How many midgets can sit in a clown car if the car can hold 4 clowns from door to door and 3 people from front seat to back seat. Two midgets fit across 1 clow

what are some reasons for limiting authority

solve for x: 2x^2+4x-16+=0

How many midgets can sit in a clown car if the car can hold 4 clowns from door to door and 3 people from front seat to back seat. Two midgets fit across 1 clow