kalumlankaotlqfl kalumlankaotlqfl

01-08-2017
Mathematics

contestada

If (3)x+y = 81 and (81)x-y = 3 find the values of x and y.

Respuesta :

ivana04 ivana04

11-09-2017

you have to isolate the variables meaning you have to do the opposite of multiply 81 you have to divide 3/81: x and y for both sides will be the same thing

Answer Link

Otras preguntas

How much would a 185 pound astronaut weigh on the moon

What is the name of the period that has the digits 913,256.

An insect is able to walk across the surface of a pond without sinking because of the A. polarity of the water molecules. B. process of evaporation. C. surface

The ocean club collects 24.93 kg of trash on the first weekend of the summer. The club collects 18.3 kg the next weekend. How much more trash is collected the

Billy stacked six pieces of wood on top of one another. If each piece was three-quarters of a foot tall, how tall was his pile?

Hannah buys 3 packs of 36 exposure films and 2 packages of 24 exposure films. She uses 8 rolls of film. How many rolls does she have left?

Hair and nails are derived from cells of the A. skin. B. bone. C. blood. D. fat tissue.

Sofia learned 10 recipes to create party dishes. She learned these recipes in two weeks. How many recipes can Sofia learn in 5 weeks ?

A Sports arena covers 710,430 square feet of ground. A newspaper reported that the arena covers about 700,000 square feet of ground. To what place value was t

Identify the helping verb in the following sentence. I will work late tomorrow. A. Will B. Tomorrow C. Late D. Work