Anonymous1017 Anonymous1017

01-04-2017
Mathematics

contestada

what value of c makes 36x^2+84x+c a perfect square trinomial?
a) 49
b) 7
c) 9
d) 4

Respuesta :

01-04-2017

(6x+7) (6××7)
Multiply 6x by 6x 36×2
6×(7) =42×
7 (6×)=42×
7 [7)=49

Answer Link

01-04-2017

36x^2 + 84x + c
The middle term in a perfect square trinomial =
2* sqrt a * sqrt c
Divide 84 by 2 = 42
Take the sqrt of 36 = 6
42/6 = 7
sqrt c = 7
So c = 49

Answer Link

Otras preguntas

how can bacteria fight pathogens

Which of the following should you do to make your argument effective? (5 points) a)Appeal strongly to the emotions of your audience. b)Include only general deta

What human activity use the most water worldwide?

Why is only a small amount of energy stored in foods available to the next organism in a food chain?

How many mol of hydrogen in 2.7 mol of caffeine?

Ephemeral streams __________. are a major agent of erosion in desert regions are a major agent of erosion in areas of ground moraine flow all the time are limit

Mrs. Conley asks her class what kind of party they want to have to celebrate their excellent behavior out of all students in the class five want an ice cream pa

As a river enters the ocean its current diverges and slows the first particles to settle are

The measure of acidity (pH) can be found with the model where pH is the acidity and H is the hydrogen ion concentration. (Remember, the base here is 10.) What i

What is the critical angle of light traveling from benzene (n=1.501) into air?