Answer:
(2,7) is not a solution to the given system of equations.
Step-by-step explanation:
Given system of equation is:
2x + 3 = y
2x + y = 15
To check whether (2,7) is solution to this system or not, we will put x=2 and y=7 in both equations.
Putting x=2 and y=7 in Eqn 1
2(2) + 3 = 7
4 + 3 = 7
7 = 7
Thus the ordered pair satisfies the equation
Putting x=2 and y=7 in Eqn 2
2(2) + 7 = 15
4 + 7 = 15
11 ≠ 15
The ordered pair do not satisfy the second equation.
Hence,
(2,7) is not a solution to the given system of equations.
Answer:
The standard form of the equation of y = -1/4x - 2 is x + 4y = -8 which is C
Answer:
50.29 cm²
Step-by-step explanation:
Base area of a cylinder = πr²
π = 22/7
r = radius
For circular objects, the width is the same as the diameter of the object
the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.
A radius is half of the diameter
radius = 8/2 = 4cm
Base area = (22/7) x 4² = 50.29 cm²
Solution:
-6 - (-2) = -6 + 2 = -4
