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Dominik [7]
3 years ago
15

Help me please please

Mathematics
1 answer:
MrRissso [65]3 years ago
4 0

Step-by-step explanation:

Diameter=24 in

Radius=12 in

Height=30 in

volume of the cone = 1/3πr²h

= 1/3(12)²×30π

= 1440 π in³

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A culture of bacteria has an initial population of 41000 bacteria and doubles every 5 hours. Using the formula P t = P 0 ⋅ 2 t d
Crazy boy [7]

Answer:

Population of bacteria in culture after 14 hours is 285541.

Step-by-step explanation:

We are given with P_{t} =P_{0}(2)^{\frac{d}{t}}

Here initial population is 41000 , t=5 and d=14

Plug in these values into the formula

P_{14} =41000(2)^{\frac{14}{5} }

Simplify

P_{14}= 41000(2)^{2.8}

     =41000(6.9644)

     =285540.5847...

To the nearest whole number is 285541.

3 0
3 years ago
PLEASE HELP FOR A BRAINLIEST!!!! Create your own example and explain how to solve Quadratic Equation using Quadratic Formula. Wh
SVETLANKA909090 [29]

Step-by-step explanation:

1. Create your own example and explain how to solve Quadratic Equation using Quadratic Formula.

The quadratic formula is used to solve quadratic equations. It is shown as   x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}

A quadratic equation is generally shown in the form of ax^{2} +bx + c = 0

For example, if you saw the equation  7x^{2} + 3x + 20 = 0

7 would be a, 3 would be b, and 20 would be c.

To solve the equation above, you would fill in the quadratic formula as such, x=\dfrac{-3\pm\sqrt{(3)^2-4(7)(20)}}{2(7)}

Then you could solve for x.

2. What part in the Quadratic Formula is the discriminant?

The discriminant is the equation under the square root on the quadratic formula, b^{2} - 4ac

It is tells us whether there are two solutions, one solutions, or no solutions.

3.  How do you know the number of solutions based on the value of the discriminant?

To know the number of solutions based off of the value of the discriminant, you need to plug in your values. Using the example quadratic equation, 7x^{2} + 3x + 20 = 0

We will plug the values into the discriminant.

3^{2} - 4(7)(20) = -551

Now, if the discriminant is positive it has two real solutions. If the discriminant is zero the equation has no real-number solutions. And finally, if the discriminant is negative, the equation has one real solution. Because our discriminant is -551, the example equation has one real solution.

Hope this helps! (Please consider Brainliest)

8 0
3 years ago
Write the shaded region of the model as a percent.
saul85 [17]

Answer:

40%

Step-by-step explanation:

2/5 as a decimal is 0.4, and 0.4 as a percentage is 40% hope this helped!

5 0
3 years ago
Read 2 more answers
How many roots does the following equation have? f(x) = 4x5 - 16x4 + 17x3 - 19x2 + 13x - 3 = 0
Anarel [89]
It has 5 roots. You can determine this by the degree of the polynomial
4 0
4 years ago
Point B is at (4, 5). It is reflected on the x-axis. What are the coordinates of its image, B'?
seropon [69]

Answer:   (4, -5)

(so it sendswfegrgnhernth4retn)

4 0
3 years ago
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