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

When y = x^2, which of the following expressions is equivalent to –y ?

Most autotrophs make “food” through the process of a. photosynthesis. b. homeostasis c. chemosynthesis d. cellular respiration

If y^8= 4 and y^7=3/x, what is the value of y in terms of x?

How do enzymes help to carry out biochemical reactions? A. By decreasing the energy of the reactants B. By increasing the activation energy of the reaction C. B

If y^8= 4 and y^7=3/x, what is the value of y in terms of x?

Which technological development enabled European navigators to determine their location during the Age of Exploration? (1) lateen sail (2) astrolabe (3) cross

Place the mouse, fruit ﬂy, duck, and gorilla in order of their relatedness to humans, from least related to most related. a. mouse - fruit ﬂy - duck - gorilla b

How can i solve this f:d->R f(x)=x at power2/x-1

Estimate the angle of elevation from the trailhead to the summit.

In the formula e = hf, if e is doubled and f is halved, what happens to the value of h?