Given:
The quadratic equation is:
To find:
The solution for the given equation rounded to 2 decimal places.
Solution:
Quadratic formula: If a quadratic equation is 
, then:
We have,
Here, 
. Using the quadratic formula, we get
Now,
And
Therefore, the required solutions are 1.14 and -1.47.
On the graph we have points x:y of
3:5
6:10
12:20
which are all in the ratio 3:5, a slope of 5/3.
3:5=9:y
y=9×5/3 = 15
Answer: C (9,15)
Answer:
y=-4x-25
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(-1-3)/(-6-(-7))
m=-4/(-6+7)
m=-4/1
m=-4
y-y1=m(x-x1)
y-3=-4(x-(-7))
y-3=-4(x+7)
y=-4x-28+3
y=-4x-25
Answer: 705m
Explanation:
Using cosine rule:
c²= a²+b²-2abcosC
Substituting:
c²=750²+650²-2(750)(650)cos60
c=√Ans
c= 705.336799..
=705m (nearest metre)
Working on x and y first, we get:
<span><span><span>x6 / </span><span>x3</span></span>= <span>x3</span></span> and
<span><span><span>y6/ </span><span>y12 </span></span>= 1/ <span>y6</span></span> so, we have:<span><span> 2 <span>x3 / </span></span><span>y6
Entering values in original equation, we get:
</span></span><span>(2 <span>x3/ </span><span>y6</span><span>)^2</span></span>=4 x^6 / y^12
