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

yes haha yes what no oh yeah no nevermind wait yes

desparte in silabe cuvintele date apoi incercuieste diftongii marcand semivocalele cu semnuls pecific

I will give 50 points answer all why the order of the proof is correct d,a,c,b Please explan dosnt have to be super detailed haha 9. Order the steps below to co

plum-pudding model other name

Which of the following functions is most likely to have the smallest value for yifx is large? (Assume & is positive) O a direct variation function with a sm

I need help with project

According to the Law of Conservation of Matter, if I have an Oreo cookie that weighs 20 grams and I crush it into crumbs for a recipe, how much do the crumbs we

You are standing at the edge of a cliff which is 40 m tall. You throw an apple up with a speed of 15 m/s, and it accelerates downward at 9.81 m/s^2. How long do

Any gïrls here free to talk

Study the equations: f(x)=11x-5 g(x)=-2x-4 What is h(x) = f(x) g(x)