slaptart96 slaptart96

07-02-2022
Mathematics

contestada

Olivia’s age plus twice John’s age is 30. Three times Olivia’s age plus 8 times John’s age is 108. How old are Olivia and John?

Respuesta :

ririgirl ririgirl

07-02-2022

Answer:

John is 9 and Olivia is 12

Step-by-step explanation:

12+18= 20

36+ (9x8)= 108

Answer Link

Otras preguntas

(1) Find a power series solution centered at xo = 0 to the differential equation y' + y = et Hint: e = (This type of hint will not be given in the actual exam.

A particle is moving so that its displacement s (in metres) is given by s = 10t-4t³ where t is the time in seconds. Do not include units for any of your answers

Wind currents develop within the atmosphere as a direct result of: Select one: a. thermal energy being absorbed b. differential heating c. readiant heating d. t

Within the class, my classmates and I are given a fixed daily allowance by their parents. Curious, I wanted to know the average daily allowance of my fellow cla

The goal of the three schema database architecture is to Oa. Separate the user applications from the physical database. O b. All the choices are correct. Oc. Di

Find the indicated probability. In a survey of 300 college graduates, 56% reported that they entered a profession closely related to their college major. If 8 o

Problem 2(10 pts) The quantity demanded of good Z decreases from 175 to 120 units as income increases from 1,500$ to 3,000 $a month. a) What would be the approa

You have been quoted a rate of 12% per annum on an investment. The inflation rate is 4% per annum. Answer the following a) What is your quoted rate called? b) W

State whether you agree or disagree with the following statement: "If two stocks have the same dividend per share and the same (constant) expected dividend grow

If a total of 13.5 mol of NaHCO3 and 4.5 mol of C6H8O7 react how many moles of CO2 and Na3C6H5O7 will be produced? 3NaCO3(aq)+C6H8O7- ->3CO2(g)+3H2O(s)+Na3C6