Welcome90 Welcome90

03-06-2020
Mathematics

contestada

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

OkBroomar OkBroomar

03-06-2020

Answer:

30 and 9

Eeexplination;

Answer Link

Otras preguntas

Which of the following is a remnant of a supernova? a. neutron star b. protostar c. black dwarf d. red giant

Since YouTube first became available to the public in mid-2005, the rate at which video has been uploaded to the site can be approximated by v(t) = 525,600(0.42

a + c =150 9a + 6c = 1155

You roll a 6 sided die with faces numbered 1 through 6 and toss a coin what is the probability of rolling a 5 or getting tails

how many liters of 15.0 molar naoh stock solution will be needed to make 20.0 liters of a 1.2 molar naoh solution? show the work used to solve this problem.

according to the study, what did john steinbeck do to prepare for his book the grapes of wrath?

When electrons are removed from an atom, the atom becomes positively charged and is referred to as a(n) _____.?

Do u think tiger could survive in the unfamiliar habitat

The figure below shows parallel lines cut by a transversal: A pair of parallel lines is shown with arrowheads on each end. A transversal cuts these two lines.

Who began a vast global exchange that included people, plants, technologies, and cultures? a. samuel de champlain c. bartolomé de las casas b. christopher co