19mjjenkins 19mjjenkins

04-09-2015
Mathematics

contestada

For what value of a is a(2x+3)=9x+15+x an identity?

Respuesta :

konrad509 konrad509

04-09-2015

[tex]a(2x+3)=9x+15+x\\ 2ax+3a=10x+15\\\\ 2a=10 \wedge 3a=15\\ a=5 \wedge a=5\\\\ \boxed{a=5} [/tex]

Answer Link

Otras preguntas

How much heat is absorbed if a 30.0 gram sample of carbon is heated from 10.5 degrees Celsius to 22.2 degrees celsius

At a restaurant, Ray's drink cost $3.29 and Rita's drink cost $2.99 . Rewrite the expression using friendly numbers to find how much more Ray's drink cost. Ente

A dodecahedral die (one with 12 sides numbered from 1 to 12) is tossed once. Find the following probability. (Enter your probability as a fraction.) The number

PLEASE HELP ME ASAP Some say that I am the finest general that America has produced. Who am I Robert E Lee Ulysses S Grant William Tecumseh Sherman George B McC

why do some people marry someone with similar characteristics

Which other expression has the same value as (-4) - (-8) ? A. (-4) + 8 B. -4 - (-8) C. 4 + (-8) D. (-4 ) + (-8)

Help me please this is due today and I’m stuck on this question

write the equation in slope y-intercept form: passing through the points (5, 7) and (-2, -3)

Les publicités You are reading a Canadian newspaper, but you are not quite sure which stores are advertised. Fill in the blanks with the type of store each ad c

How can the use of pesticides and fertilizers make it difficult for plants to grow