Please answer correctly !!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!

Mathematics

1 answer:

Anna11 [10]3 years ago

4 0

Answer:

1 and 2 are rectagles and 3 is not

Step-by-step explanation:

You might be interested in

What is the focus of the parabola? y=−1/4x^2−x+3

Delvig [45]

We know that
the equation of the parabola is of the form
y=ax²+bx+c

in this problem
y=−1/4x²−x+3
where
a=-1/4
b=-1
c=3

 the coordinates of the focus are

(-b/2a,(1-D)/4a)
where
D is the discriminant b²-4ac
D=(-1)²-4*(-1/4)*3-----> D=1+3---> D=4
therefore
x coordinate of the focus
-b/2a----> 1/[2*(-1/4)]----> -2

y coordinate of the focus
(1-D)/4a------> (1-4)/(-4/4)---> 3

the coordinates of the focus are
(-2,3)

5 0

4 years ago

The drink dispenser in a fast food restaurant holds 250 liters

Charra [1.4K]

Question:

A drink dispenser in a fast-food restaurant holds 250 litres of lemonade. How many 0.6-litre drinks can be dispensed before a refill is needed?

Answer:

The number 0.6-litre drinks can be dispensed before a refill is needed is 416

Step-by-step explanation:

Given:

The capacity of the drink dispenser = 250 litres

To Find: