Answer:
width=6cm, lenth is 7cm
Step-by-step explanation:
Let width of rectangle be x cm
Twice width=2x cm
length=2x-5 cm
Area of the rectangle= L× W =42cm²
(2x-5) × x =42
x(2x-5)=42
2x²-5x-42=0
solving the quadratic equation
x=6cm
width=6cm
length= (2×6)- 5 =7cm
Answer:
2, 5, 8, 11, 14, 17
Step-by-step explanation:
rule = +3
Answer:
10000
Step-by-step explanation:
50 times 200
5 times 2 is 10
add three zeros: 10000
Answer:
18/4
After simplification
9/2
Step-by-step explanation:
3/4 ÷ 1/6
Copy dot flip
3/4 * 6/1
18/4
If we simplify
Divide the top and bottom by 2
9/2
Hi there,
Your question is "twice a number (x) is fifty"
Recall how a number is represented by x.
Twice a number would be represented as 2x.
Therefore, to represent that twice a number is equal to 50, that would result in the expression: 
If you're looking to solve this equation, it's often best to think about the "reverse" of the current equation.
Notice how 2 is multiplying the x.
To isolate x, divide that side by 2.
However, recall that whatever is done to one side of an equation must also be done to the other side of the equation. Therefore, you will need to divide both sides by 2.



Equation: 
Solving for x: 25
Hope that helps!