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

Which natural resource became more available to the American public as a result of railroad expansion? A.Onatural gas B.wood C.Ocoal D.water

Denise is designing the seating arrangement for a concert at an outdoor theater. to give everyone a good view, each row must have 6 more seats than the row befo

A table of data is given.x(-2,-1,0,1,2)f(x)(71,13,3,0.6,0.1) which exponential model best represents the data

how do i make this into an open ended question "do you have any help?"

(Image: Start Fraction x over 4 End Fraction) + 2 = –2

Which term matches the picture?

I need help please ASAP?!!!

↓ What is the central idea of a text? the topic of a text, or what a text is mostly about the main point the author is trying to make in a text the details that

helpppp please and quick

Look at the dot plots below. Compare the shapes of the distributions of the results from the two experiments.