kylaprimus1411 kylaprimus1411

25-10-2017
Mathematics

contestada

What is the value of x, when -25(x - 4) = -55(x - 10)?
A) x = 5
B) x = -5
C) x = 81
8

D) x = 15

Respuesta :

30-07-2018

[tex] -25(x - 4) = -55(x - 10)\\\\-25x+100=-55x+550\ \ \ |-100\\\\-25x=-55x+450\ \ \ \ |+55x\\\\30x=450\ \ \ |:30\\\\x=15 [/tex]

Answer: D) x = 15

Answer Link

Otras preguntas

a metal bar weighs 8.15 ounces. 93% of the bar is silver. how many ounces of silver are in the bar

The reaction described in Part A required 3.98L of calcium chloride. What is the concentration of this calcium chloride solution?

why were scribes so important in ancient egypt

What made slums so difficult to live in?

A pH of 12 indicates a(n) _____. weak acid strong acid weak base strong base A substance that yields an anion plus a hydrogen ion is a(n) _____. salt acid base

Every 5 1/2 cups of flour weighs 1 9/16 lbs. use a unit rate to show how you could determine if there are more than it less than 35 cups of flour in a 10-pound

solve each equation for x. d=f+fx

find the next three terms in each sequence 40, 10, 5/2, 5/8,... if anyone can explain how to do this please

With a headwind, a plane traveled 390 mi in 1.5 h. Let x represent the plane’s speed (excluding wind speed) and let y represent the wind speed in miles per hour

American flag stands for tolerance summary