autumnxng13061 autumnxng13061

01-01-2018
Mathematics

contestada

The square of sophie's age is 16 less than joanna's age. it is also the case that joanna's age is 8 times that of sophie. how old is joanna?

Respuesta :

jorel1380 jorel1380

01-01-2018

Let s be Sophie's age. Then joanna is s²+16. Joanna is also 8s, if Sophie is s. So:
s²+16=8s
s²-8s+16=0
(s-4)²=0
s=4
Sophie is 4; Joanna is 32
☺☺☺☺

Answer Link

Otras preguntas

Mrs. Homan's first period class watched out the window and recorded the color of the cars that drove by the school. They found that 19 our of 50 cars were red.

An inventor can obtain a(n) _____________ to protect his or her idea. (3 points) a antitrust b price control c patent d regulation

Seven times a number is 30 greater than the sum of twice the number and 5. What is the number

When a strong acid such as hcl is added to the carbonic acid buffer system, _________

In acidic solution, ________. In acidic solution, ________. [h3o ]= 0m [h3o ]=[oh−] [h3o ]>[oh−] [oh−]> 7. 00 [h3o ]<[oh−]

What event led to Kansas becoming known as Bleeding Kansas? A. The Harpers Ferry Raid. B. The Kansas-Nebraska Act. C. The Pottaawatomie Massacre. D. The Undergr

Why did no one believe Wegner’s Theory of Continental Drift or Plate Tectonic Theory?

You are the IT consultant to a petro-chemical company. The company has ten servers and 250 workstations located in San Francisco and New Orleans. They are curre

why was forced labor in each region different

The last 2 photos i took for my photography class what do you all think? (like i said before he wants us to submit as many photos as we can and i had these but