diamond6052 diamond6052

21-12-2020
Mathematics

contestada

B is the midpoint of, AB = x² + 2x + 25 and BC = 40. What are the values of x?

Respuesta :

Yang100 Yang100

21-12-2020

Answer:

x=3, -5.

Step-by-step explanation:

x^2+2x+25=40

x^2+2x+25-40=0

x^2+2x-15=0

factor out the trinomial,

(x-3)(x+5)=0

zero property,

x-3=0, x+5=0,

x=0+3=3,

x=0-5=-5.

Answer Link

Otras preguntas

1/3 (n+1)+2=1/6 (3n-5)

How will adding the value 20 affect the mean and median of the data set 40, 50, 60, 60, 80, 100? A. Mean and median will decrease B. Mean will decrease, but med

a roller coaster is hard to stop because it has a lot of inertia. Infer using newtons first law

There goes the right problem What is the perimeter of rectangle EFGH shown on the coordinate plane?

Is reproduction important to the survival of an individual? Why would you say that living things reproduce if some individual living things may not reproduce?

19.08 rounds to nearest tenth

Why did people want to restrict immigration to the United States? Choose all answers that are correct. A. Many people were unwilling to pay taxes to meet the so

What is it called when loose rock debris is carried downslope by a river? A: downcutting B: headward erosion C: removal of regolith D: stream piracy

what is the lcd of 3/10an -4/15?

The group of molecules called nucleotides contain: A) phosphate groups. B) pyrimidines.