For vertex at (h,k)
the equation is
y=a(x-h)^2+k
for vertex at (0,-1)
equation is
y=a(x-0)^2+(-1) or
y=ax^2-1
find what a is
(2,2)
x=2
y=2
2=a(2^2)-1
2=a(4)-1
add 1
3=a(4)
divide both sides by 4
3/4=a
the equation is
y=3/4x^2-1
Answer: the answer is B: 24ft
Step-by-step explanation: To find how wide the triangle is identify your angles. You have a right angle which is equal to 90° and an angle that measures 46°. Add up both of these angles and you'll get 136°. A triangle can only have three angles that add up to 180. So subtract 180 and 136 you get 44. Multiply the hypotenuse by sin(46) to get the length of the side facing the opposite way of the angle that measures 44°. You will get 11.8 which is about 12. The other triangle is a congruent triangle meaning that it's angles and sides are the same. Add both 12's up and you have 24ft as your width for the cottage.
Answer:
As 
% is $
, so 
% is $1600.
Please check the attached diagram to visualize the double line.
Step-by-step explanation:
A double number line is a way to view a proportional amount of two different quantities.
As 75% of the budget is $1200.
By setting up a fraction bar, find 25%.
Then multiply by 
to give 
%.
As % is $, so % is $1600.
Please check the attached diagram to visualize the double line.
