A minus B equals 25 A : b is equivalent 13:8

Question

ahobbs1983p0z3ek ahobbs1983p0z3ek

14-12-2017
Mathematics

contestada

A minus B equals 25 A : b is equivalent 13:8

Respuesta :

Otras preguntas

Based on her statement that she'd like to feel more included by the rest of the group, Shelly feels that which of her following core concerns is not being met?

Interactional theory suggests several developmental domains that are likely to mute or buffer the impact of parental delinquency on their child's subsequent del

square tables with a side length of 39 inches rectangular tables 23 inches wide and 71 inches long round (circular) tables with a diameter of 48 inches. Whic

Determine the net force necessary to give an object with a mass of 4.0 kg an acceleration of 5.0m/s^2.net force necessary to give an object with a mass of 4.0 k

Below are several statements about the Sarbanes-Oxley Act (SOX). Required: Select whether the answer to each of the statements is true or false. Statement 1: SO

Given the network below, determine: tc V_(CE) 18 V_(E) Show solutions thoroughly. Write your solution in the provided answer sheet. a) Voltage drop across the r

The termination of pain that occurs when a rat escapes or avoids electric shock by-pressing is a... A) positive reinforcer B) secondary reinforcer C) negative

I'm a memory segment that a process uses with read/write access whose memory allocations are always initialized. Who could I be? a.Code Segment b.Stack c.Kernel

In a study comparing population 1 and population 2, the sample mean difference was s_d=$830, and the sample standard deviation was s_d=$1,124.What are the appro

Which statements below represent phenological mismatch? A) The study of the seasonal activity of organisms regarding climate. B) Trees end up leafing out becaus

LerenStudy LerenStudy · Answer 1 · 2018-01-03T23:11:12+01:00

So, this includes some good old algebra.
A minus B equals 25 A : b is equivalent 13:8

So, we have a couple things to write out.
The ratio of a to b (a:b) is 13:8
---> this means that 13a = 8b
I would solve for one of the variables. b seems a little bit easier, I guess so I'll solve for that one.

(13/8)a=b
Therefore:
a-b=25
a-(13/8)a=25
(8/8)a-(13/8)a=25
-(5/8)a=25
-a=25 / (5/8)
-a = 25 * (8/5)
a= -40

Now, it probably wants both a and b solved. So to find b we just substitute in the value for a. Or, more easily, just solve the original equation with a substituted.
a-b=25
-40-b=25
-b=25+40
-b=-65
b=-65

and to check:

13a = 8b
13(-40)=8(-65)
-520=-520

and
a-b=?
-40-(-65)=25