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

The graph of function g has x-intercepts at x = -1 and x = 3 and a y-intercept at y = -3. Select the graph that could model function g.

What is the reason for putting yourself on a budget? A. To prevent yourself from paying compound interest OB. To earn a high level of return on your investments

What countries make up the Central Asian Republics?

Can someone tell me what this means?

Mexico's eastern coastline runs along the The extends near the southwestern coast. region. Central America. mountain range cover the country's northwestern run

Simplify 5x²-x+ 9 = X=3

When they survive, organisms are more likely to be able to reproduce and pass on their genetic information to their

Present indicative of e:ie stem-changing verbs. Select the verb that makes sense in the context of the sentence. 1. El Sr. Santino es profesor de filosofía. El

Which is not an example of a risk management strategy?.

The number of calories C varies directly as the number of ounces N of avocado that is consumed by the body and C is 380 calories N is 20 ounces. Find C when N i