For the equation:
-1=5 x^2 - 2 x
5 x^2 - 2 x + 1 = 0, then we substitute: a=5, b=-2, c =1
to discriminant formula: D= b^2 - 4 a c = (-2)^2 - 4 * 5 * 1 = 4 - 20 = - 16
Answer:
The discriminant is equal to -16 which means the equation has no real number solutions.
Answer:
Kuroo here!
Step-by-step explanation:
I font eat salad a lot so I'll just say ranch.
First, the rectangle:
We have the measurements of a length of 4, and width of 2. The area of a rectangle is Length times Width, therefore:
4x2=8 ft squared for the rectangle.
Now the Triangle:
We see that the whole left side is 4ft, and that the rectangle's width is 2ft; therefore, the left side of the triangle is 2 ft (4-2).
The area of a triangle is 1/2Base times Height. The base is 4, and the height is 2; therefore:
1/2x4x2=4 ft squared.
Now we add our areas for the total:
4+8=12 ft squared
I hope this Helps!
Step-by-step explanation:
so, the 200m winner's average speed was
200m/(60+57)sec = 200/117 m/s
so, 400m with the same speed would need x seconds :
200x/117 = 400
200x = 400×117
x = 2×117 = 234 seconds = 3 minutes and 54 seconds
(after seeing that a minute has 60 seconds, and that then 234/60 = 3 and 54 remainder).
so, she would have reduced her time by 10 seconds (from 4 minutes 4 seconds down to 3 minutes 54 seconds = 4 + 6 = 10).
