athenacamacho5305 athenacamacho5305

03-06-2020
Mathematics

contestada

4) The sum of two numbers is 39. Their
difference is 21. What are the two numbers?

Respuesta :

03-06-2020

Answer:

30 and 9

Step-by-step explanation:

x+y=39 , x-y=21

Solve for x:

x+y=39 , x-y=21

x= 30

Substitute x with 30:

(30)+y=39 , (30)-y=21

Solve for y:

y=9

Answer Link

Otras preguntas

Lisa, Kelly, and Maria have $56.70. If Lisa has $23.20 and Kelly has $15.05, which equation shows how much money, n, Maria has

39. Calculate the value of c in the triangle below.

Your lunch bill is L. You want to leave a 20% Tip. Write what expression could be used to show this situation. A. L (1-0.2) B. L (1+0.2) C. 0.8L

A rectangle has an area of (x3 + 5x2 + 5x – 2) square meters and a width of (x + 2) meters. Find its length. (x2 + 3x – 1) meters (x2 + 3x + 1) meters (x2 + 5x

Apart from the OOPs concepts learned in this lesson, identify additional concepts and write an essay on their functions. Explain how they are used in a program.

Given that x = 9.5 m and θ = 20°, work out AC rounded to 3 SF

can someone plz help me , thank youi

4.which of the best meaning of secondary colors A.a result in the mixing of three primary colors.

8-50. What is the area of a regular decagon if the length of each side is 20 units? Show all your work.

A shopkeeper purchased 60 pencil boxes for 4.500 and sold at the rate of 4.125 for 50 pencil boxes. Howmuch profit present does he make on selling all the penci