Seudónimo Seudónimo
  • 22-02-2016
  • Mathematics
contestada

What is the value of x in the equation x – y = 30, when y = 15?

Respuesta :

Аноним Аноним
  • 22-02-2016
y= 15

x-y  = 30
x-15= 30
    x = 30+15
    x = 45

Therefore, the value of x is 45
Answer Link
Аноним Аноним
  • 22-02-2016
x - y = 30
x = ? when y = 15
Substitute for y:- 
x - y = 30
x - 15 = 30
x ⇒ ?
Inverse operation:-
30 + 15 = x
30 + 15 = 45
x ⇒ 45

Check:-
x - y = 30
y ⇒ 15
x - 15 = 30
x ⇒ 45
45 - 15 = 30
Correct!

x ⇒ 45
Answer Link

Otras preguntas

In which one of the following sentences is the semicolon used correctly? A. Donald has three sisters; Carla, Donna, and Maggie. B. Whenever I feel afraid; I thi
how do you say 876543 in word form
Which ordered pair is in the solution set of 3x-y=10 A. (5,-5) B. (4,2) C. (4,-2) D. (_5,5) Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Plz!!!!
what is 19/20 as a decimal
Name the process in animals which require meiosis to take place
What is it called when the audience know something the characters don't?
describe the steps involved in the fractional distillation of crude oil answer in such a way bcz it is a 3 mark question
i need help!! i need 15 questions in spanish i can ask someone to get to know them better, but not ovbiosu ones like whats your name, but questions that are mor
what is the answer [tex]5x(4x+3)=24[/tex]
To change knots per hour to miles to hour, use the expression 1.15k, where k is the speed in knots per hour. A plane is flying at 300 knots per hour. How fast i