takemetoouterspace takemetoouterspace

21-03-2017
Mathematics

contestada

What is the value of z so that-9 and 9 are both solutions of x^2+z=103?

A) -22
B) 3
C) 22
D 184

Respuesta :

21-03-2017

If the sol'ns are -9 and 9, then we can use this to form our eq'n:
(x - 9)(x + 9) = 0
x^2 - 81 = 0
so...
x^2 + z - 103 = x^2 -81
z - 103 = -81
z = -81 + 103
z = 22

Answer Link

Otras preguntas

What does Sadanira means? 1) The river in which water never comes. 2) The river in which water always flows. 3) The river in which the water sometimes came

What do you consider a Goal to be? This is actually a GYM class question.....

1. How did the growth of the steel indus- try influence the development of other industries?

ac=d-r, please solve for a

How does the organization of the Senate allow a small minority of the population to have significant power in the legislative process?

Excitatory stimuli generally cause the membrane potential of a neuron to O move closer towards an action potential O none of these O move further away from an a

How many numbers between 1 and 2005 are integer multiples of 3 or 4 but not 12?

After how many months will Workout 24 and your Gym cost the same? Sam joined Workout 24 for fifteen months. How much did he pay total? After how many months wil

A clothing store offers customers a holiday sale of 20% off the price of x items. A customer then has an additional 15% off coupon that can be used when checkin

es Bueno que yo (hablar) _____ el Español bien