Answer:
v = 7
is the value for which
x = (-21 - √301)/10
is a solution to the quadratic equation
5x² + 21x + v = 0
Step-by-step explanation:
Given that
x = (-21 - √301)/10 .....................(1)
is a root of the quadratic equation
5x² + 21x + v = 0 ........................(2)
We want to find the value of v foe which the equation is true.
Consider the quadratic formula
x = [-b ± √(b² - 4av)]/2a ..................(3)
Comparing (3) with (2), notice that
b = 21
2a = 10
=> a = 10/2 = 5
and
b² - 4av = 301
=> 21² - 4(5)v = 301
-20v = 301 - 441
-20v = -140
v = -140/(-20)
v = 7
That is a = 5, b = 21, and v = 7
The equation is then
5x² + 21x + 7 = 0
Answer:
6x+25
Step-by-step explanation:
here is given that
Answer:
6/8 of a mile,
Step-by-step explanation:
if one furlong is 1/8 of a mile, the 6 shall be 1/8 added to itself 6 times, therefore it shall be 6/8.
The reason the 2nd number is plus two because you start with a odd number like 3 so to get the next odd number you have to add 2 get it.
X+X+2=188
2x+2=188
Subtract 2
2x= 186
Divide by 2
X= 93
Numbers are 93,95
Check 93+95=188
To find volume of any object, you usually have length * width * height. You have the three dimensions so multiply all of them together.
1*1*1 = 1 unit^3. Hope this helped!
