Answer:
vertex = (7, - 18)
Step-by-step explanation:
given a parabola in standard form : ax² + bx + c : a ≠ 0
Then the x- coordinate of the vertex is
= -
y = 2x² - 28x + 80 is in standard form
with a = 2, b = -28 and c = 80, hence
= -
= 7
substitute x = 7 into the equation for corresponding value of y
y = 2(7)² - 28(7) + 80 = 98 - 196 + 80 = - 18
vertex = (7, - 18)
6 units
8 units
10 units
14 units
The length of one side of the given rhombus is; C: 10 units
The half diagonals of a rhombus are the legs of a right angle triangle with the hypotenuse being the side of the rhombus.
We see that EG and FH are the diagonals of the rhombus. This means that the half-diagonals measure 8 and 6.
Using Pythagoras theorem, we can find the hypotenuse which is the length of the side of the rhombus.
Thus;
8² + 6² = c²
64 + 36 = c²
100 = c²
c² = 100
c = 10
In conclusion, the length of one side of the rhombus is 10 units
Read more about length of rhombus at; brainly.com/question/26154016
Answer: 10 units
Step-by-step explanation:
y = mx + b - it's the equation of a straight line. We need only two points to the plotting the graph of that function.
Select any two x values and calculate y values:
Look at the picture.
The solution of the system of equations is the intersection point of the line.
Answer:
3
Step-by-step explanation:
using the rule of radicals
×
⇔
= =
×
= 3