10*2=20
20*10=200
i think the answer is E
Answer:
a. (1,2), b. (1, 0)
Step-by-step explanation:
a.

b.

Answer:
a) t= 2hours and 10 minutes
b) t=4hours and 20 minutes
v1t1=v2t2
ANSWER
The discriminant is zero.
The given equation has one real root.
EXPLANATION
The given quadratic equation is:

We rewrite this in the form;


This means that,
a=-2, b= 8, c=-8
The discriminant is given by;
D=b² - 4ac
That is:


Therefore the discriminant is zero.
This tells us that the quadratic equation has one real root.
In order words, the given quadratic equation has a repeated real root.
Answer:
yes
Step-by-step explanation:
Solving the 2 equations to find the point of intersection
y = 3x - 1 → (1)
y = - x + 3 → (2)
Since both equations express y in terms of x, equate the right sides
3x - 1 = - x + 3 ( add x to both sides )
4x - 1 = 3 ( add 1 to both sides )
4x = 4 ( divide both sides by 4 )
x = 1
Substitute x = 1 into either of the 2 equations for corresponding value of y
Substituting x = 1 in (2)
y = - 1 + 3 = 2
Thus (1, 2) is the point of intersection