Answer:
x=2
HPT 3x+5y=6 (1) và 2x+y=4 (2)
Nhân phương trình (2) với 5 để hệ số y của 2 phương trình bằng nhau. Ta có:
(2)⇔ 10x+5y=20(3)
Trừ (3) cho (1), có: 7x+0y=14⇒x=2
Answer:
A spinner is divided into many sections of equal size. Some sections are red, some are blue, and the remaining are green. The probability of the arrow landing on a section colored red is 9 over 20. The probability of the arrow landing on a section colored blue is 6 over 20. What is the probability of the arrow landing on a green-colored section?
15 over 20
11 over 20
6 over 20
5 over 20
Step-by-step explanation:
Answer:
D)
Step-by-step explanation:
As if a statement is given which says that :Three less than the square of a number.
This means if the number is 'x'
Suppose the statement is : the value of y is 3 less than the square of x then the equation will be
By using two such statement that gives two equation we can find the value of x and y by solving one equation and putting it in the other equation which will give the values of two variables .
Did you want to know how or the answer