Step-by-step explanation:
2x-3y= -14
5x+9y= -2
multiply the first one by 5 and the second one by -2 to get equal and opposite value of x.
➡️when you multiply,it will be
10x-15y= -70
-10x-18y= 4
cancel out each x value,then you get
-15y-18y= -70+4
-33y= -66, divide each side by -33 to get the value of y
⚪️y= 2
➡️substitute the value of y in the equation of (2x-3y= -14) to find the value of x
2x-3(2)= -14
2x-6= -14
2x= -14+6
2x= -8 divide both side by 2
⚪️x= -4
so the answer is (-4,2)
distribute.
5x= -10x-20
15x= -20
ANSWER : x = -1 1/3 or -4/3
Answer:
−66/7(Decimal: -9.428571)
Answer:
13 cm
Step-by-step explanation:
The volume (V) of a cube is calculated as
V = s³ ( where s is the side length )
Given
V = 2197, that is
s³ = 2197 ( take the cube root of both sides )
s = = 13 cm
Statement that the values of two mathematical expressions are equal