Answer:
We conclude that 49x² - 28x + 4 = 0 has only one real root.
Thus, option B i.e. one real root is the correct option.
Step-by-step explanation:
Given the equation
49x² - 28x + 4 = 0
comparing with the quadratic equation ax² + bx + c = 0 for x, where a ≠ 0,
here
a = 49, b = -28, c = 4
Determining the discriminant b²-4ac
b²-4ac = (-28)² - 4(49)(4)
= 784 - 784
= 0
It is clear that the discriminant b²-4ac is equal to zero.
i.e.
b²-4ac = 0
We know that if the discriminant b²-4ac = 0, then the quadratic equation has one real root.
Therefore, we conclude that 49x² - 28x + 4 = 0 has only one real root.
Thus, option B i.e. one real root is the correct option.
Answer:
74 dollars
Step-by-step explanation:
When you see many more it means subtract
700
<u> ⁻636</u>
<u>074</u>
<u>74 dollars</u>
<u />
Answer:
21.67.
Step-by-step explanation:
Here is the correct question: Lois made a dish with 4 1/3 cups of pasta. One serving of the pasta is 0.2 cups. How many servings of pasta were in the dish Lois made?
Given: Lois made dish with 
One serving of pasta= 0.2 cups
Now, using unitary method to find total number of servings of pasta were in the dish Lois made.
First, lets convert 
into decimal
= 4.33 cups
∴ Lois made a dish with 4.33 cups of pasta.
We know, One serving of pasta= 0.2 cups
∴ Total serving in 4.33 cups of pasta= 
∴ 21.67 serving is possible in 
of pasta.
