Answer: First Option is correct.
Step-by-step explanation:
Since we have given that
Now, we will use "Substitution Method" to find the values of x and y:
Put the value of x in first equation i.e.
Now, we use the value of y in equation (3),
Hence, values of (x,y) is (4,1).
Therefore, First Option is correct.
Answer:
All except 35
Step-by-step explanation:
8, 40, 80 and 288 is a multiple of 4.
90 is a multiple of 9.
That's a monomial. Nothing is separated by addition or subtraction, so it is all one term.
Answer:
2 ( k + ( 2k +4)) = 50 cm is the required equation.
Width of rectangle = 7 cm, Length of rectangle = 18 cm
Step-by-step explanation:
The perimeter of the rectangle = 50 cm
Le the width of the rectangle = k cm
⇒The length of the rectangle = (2k + 4) cm
Now, PERIMETER OF THE RECTANGLE = 2( LENGTH WIDTH)
⇒ 2 ( k + ( 2k +4)) = 50 cm
or, 2( 3k+ 4) = 50
⇒ 6k + 8 = 50
or, 6k = 50 - 8 = 42
or, k = 42/6 = 7
⇒ k = 7 cm
Hence, the width of the rectangle = k = 7 cm
and the length of the rectangle = (2k +4) = 2(7) + 4 = 18 cm
12/23 is the right answer
