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vaieri [72.5K]
3 years ago
5

Applying the Quadratic Formula

Mathematics
2 answers:
Verdich [7]3 years ago
8 0

Answer:

its B on edg

Step-by-step explanation:

follow my ifunny "dankmemehistory"

Katyanochek1 [597]3 years ago
7 0

Answer:

B

Step-by-step explanation:

The trick you need to employ is that when the rock hits the ground, the timer stops. So h must be taken as 0.

0 = - 16t^2 + 255            Set up the equation

- 255 = - 16t^2                Divide by -16

15.9375 = t^2                  Switch

t^2 = 15.9375                   Take the square root of both sides.

sqrt(t^2) = sqrt(15.9375)

t = 3.992 seconds

The closest answer is B


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I need help with this please
riadik2000 [5.3K]

Answer:

31/8

Step-by-step explanation:

4 0
3 years ago
Just please help i need help please!!
anastassius [24]

Answer: 1- a square has 4 equal sides so if one side is 9cm then the rest are 9cm, so 9x4= 36cm

2- do the same thing as part 1 but add a power of 2 to it, so 36^2 = 1296cm

Step-by-step explanation:

5 0
3 years ago
Frank purchased a new ice box having 2kg capacity. He wants it to be full with ice cubes. He measured the ice cubes to be 3.5 cm
salantis [7]

Answer:

Frank can put 5 cubes in the box.

Step-by-step explanation:

Formula:

Mass = Volume × density.

1 cubic centimetre = 0.001 liter= 1 millilitre

Given that,

Frank purchase a new ice box having 2 kg capacity.

So,the mass of the cubes is 2 kg.

Each ice cubes measured 3.5 cm by 3.5 cm by 3.5 cm.

The volume of a cube is = Side ^3

The volume of a each ice cubes is =3.5^3 cm³

                                                        = 42.875 ml

The ice cubes have a density of 0.914 g/ml

The mass of each cubes are

=volume of each ice cubes × density

=42.875 ml ×0.914 g/ml

=39.18775 gram.

Let x number of ice cubes he can put in the box.

The mass of x cubes is = 39.18775x grams.

2 kg= 2,000 gram [ since 1 kg= 1000 gram]

According to the problem,

39.18775x=2,000

\Rightarrow x=\frac{2000}{39.18775}

\Rightarrow x\approx 51

Frank can put 5 cubes in the box.

5 0
4 years ago
What is the diameter of a circular swimming pool with a radius of 8 feet?
Alenkasestr [34]
We know that,

diameter is twice the radius, I.e d = 2r

Now d = 2(8)ft = 16 feet
5 0
2 years ago
Hey can someone please help explain and answer this 1 question. There's a picture. Thank you!
zmey [24]
//You can substitute some values in to find out, for example (1, -5) and (5, -5) are good.
Using this method, you can deduce that it would be A
3 0
3 years ago
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