hello394 hello394

02-11-2020
Mathematics

contestada

Joe is twice as old as Mary. Nick is 7 years older than Mary. The sum of their ages is 43. What is the age of each person?

Respuesta :

02-11-2020

Answer:

x Joe age

y Mary age

z Nick age

x = 2y

z = 7 + y

x + y + z = 43

substitute values of x and z

2y + y + 7 + y = 43

4y = 43 - 7

4y = 36

y = 9

Joe is 2y = 18

Nick is 7 + y = 16

Mary is 9

Answer Link

Otras preguntas

Which best characterizes Swift's use of words in paragraph four (lines 20-21) to convey his feelings about current attempts to solve the hunger problem

How did the change from violence to negotiation in the Israeli-Palestinian conflict affect change for the region in the 1990s?A.) It showed that Palestinians an

Listen to the conversation and choose the statement that is true. Rafael: Pedro: A. Cristina es de Puerto Rico y Valeria es de Costa Rica. B. Cristina y Val

3 in. 1 in. 2 in. 4 in.

What where reactions of the US to the immigration of Europeans and Asians

Genetic instructions are carried in dna for the formation of.

how many calories walking 9 holes of golf hilly course

Add together zero point two, zero point four and zero point six.

please help with this question algebra 1

Approximate which two integers does the root of 30 is between