sameakamou5wf8 sameakamou5wf8

04-08-2017
Mathematics

contestada

Devaughn's age is two times Sydney's age. The sum of their ages is 30

. What is Sydney's age?

Respuesta :

musiclover10045 musiclover10045

04-08-2017

D=2S

D+ S = 30

2s+S = 30

3S=30

S=30/3 = 10

Sydney is 10

Devaughn is 2*10 = 20

Answer Link

Otras preguntas

why did russia have revolution in 1917?

The rectangle has an area of 4(x+3) square units. A- If the dimensions of the rectangle are doubled, what is the area of the new rectangle in terms of x? Show y

How has water influenced the development of civilization in Africa

An archer’s arrow follows a parabolic path. The height of the arrow f(x) is given by f(x) = -16x^2 + 200x + 4, in feet. Find the maximum height of the arrow.

How many years does an apple tree live useful?

solve the simultaneous equation 4x+7y=1 3x+10y=15

how do you know 8 thousandths is less than 1 hundredths

In a probability experiment, Craig rolled a six-sided die 55 times. The die landed on a number greater than three 31 times. What is the ratio of rolls greater t

How to change 3 7/8 into an improper fraction

A pet store currently has a total of 45 cats and dogs. There are 7 more cats than dogs. Find the number of cats and dogs in the store. Write and solve a system