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

Attention is focusing on something specific in the environment. Please select the best answer from the choices provided T F

How many 3/5 are in 15 3/5

Find the value of 9y-9 given that 5y-2=3.

what is the difference bettween 9 ÷3 and 3÷9

What are birth control methods Looking or the meaning no examples also, birth control methods not birth controls.

If you are in algebra 1 or 2 download an app called "Desmos" its forest green and has some white detailing.... and if you're struggling in math in general downl

Write an equation in point slope form line passing through (-2,3) (3,-2)

a wall of glass 2cm thickhas inside temperature of 30°C,outside temperature of15°C.how much heat is flowing through the glass(k=1.05JM/K)

Suzie is making a large batch of brownies with her mother. The recipe calls for 4 2/3 cups of sugar. The only measuring device she has measures 1/3 cup. How man

please help with the question below!