alexzhang535p4q4a2 alexzhang535p4q4a2
  • 04-07-2018
  • Mathematics
contestada

The difference of two numbers is 4 and their sum is -7. What is their product?

Respuesta :

calculista
calculista calculista
  • 03-07-2019

Answer:

The product is 8.25

Step-by-step explanation:

Let

x-----> one number

y ----> the other number

I assume x>y

x-y=4 ----> equation A

x+y=-7 ---> equation B

Solve the system by elimination

Adds equation A and equation B

x-y=4

x+y=-7

-----------

2x=-3

x=-1.5

Find the value of y

x-y=4

-1.5-y=4

y=-1.5-4=-5.5

The numbers are -1.5 and -5.5

Find their product

(-1.5)(-5.5)=8.25

Answer Link

Otras preguntas

What does smooth ER lack that rough ER has?
what are the key elements associated with measuring the weather
the flight lasted for 12 seconds at an average speed of 10 feet per second. the ratio of the airplanes wingspan to the distance flown was 1:3 what was the wings
you can buy 2 dvds for the same price you would pay for 3 cds selling for 13.20 apiece. explain how you could find the price for 1 dvd
What's the first step to making a law?
4x+3y= -1 5x+4y= -1 solving by emilination or subtraction please help :)
Which was a result of Europe’s settlement of North America?
Find 3 consecutive integers whose sum is 171?
Amy rents a storage room that is 15 feet long,5 feet wide, and 8 feet.What is the volume of the storage room?
existing rocks can become sedimentary rocks when they are subjected to which conditions? a.) erosion, deposition, compaction b.) heat, erosion, pressure c.) hea