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

Dorothy types 120 words per minute. How many words does Dorothy type in 1.75 minutes?

List the order in which digestion takes place?

Canada is bigger than the united states,but only has ______ as many people. 1)one-half 2)one-fourth 3)one-eighth 4)one ninth

Lizzy bought 4 bags of apples at the store. Her mom gave her 8 more apples. Now Lizzy has 36 apples. How many apples were in each bag?

How many fewer minutes does it take to drive 35 miles at 30mi/h than to drive the same distance at 25 mi/h? The answer is 40minutes but i need to know how to

What is 4/9 - 2/15 in simplest form

You want to fill a 2-foot shelf with framed pictures.There are x pictures in 4-inch frames and y pictures in 8-inch frames. Write an function for this situation

If an orange is orange, why isn't a lime called a green or a lemon called a yellow?

chemical reactions that absorb more energy than they release are called

an equation stating that two ratios and rates are equivalent is a(n)