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

This model shows a plant cell in a solution. Solutions can be hypotonic, hypertonic, or isotonic to the cell. Which one of the solutions tested demonstrates the

Brainliest for whoever is first and right. To compute your weight in metrics, multiply mass by ___m/s/s. 8.8 8.9 9.8

F(x)= -2(x+4)^2-5 in standard form

Find three consecutive even integers. Such that 7 times of first integer is 4 more than the sum of second and third integers

Albert stands on a frictionless turntable, holding a bike wheel. Both Albert and the wheel are initially stationary. Albert gives the bike wheel a good spin, an

Elements with great electron affinities (large negative values) often have 1. large sizes and low ionization energies. 2. small sizes and low ionization energ

what is the answer to this o.428

The sum of two numbers is 10 and their product is 24. Find thenumbers.

Please describe the relationship between time lag and distance from the epicenter. Us data from this sheet to explain your answer

There were 15 students on the school bus before Brad's stop. Twelve students, including Brad, got on the bus at his stop. The bus went to a high school and 6 st