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3 years ago

How would I find the diameter?

Mathematics

1 answer:

adell [148]3 years ago

3 0

By measuring the width of the circle or sphere radius is half of the diameter

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The decreasing population, p, of owls in a national park is being monitored by ecologists and is modeled by the equation p=−0.

n200080 [17]

By solving a quadratic equation, it can be verified that

The owl population will disappear after 329.12 years

What is a quadratic equation?

At first it is important to know about equation

Equation shows the equality between two algebraic expressions by connecting the two algebraic expressions by an equal to sign.

A two degree equation is known as quadratic equation.

Here, a quadratic equation needs to be solved

The decreasing population, p, of owls in a national park is being monitored by ecologists and is modeled by the equation p= $-0. 4t^2+128t+1,200$

For population to disappear, p =0

$-0. 4t^2+128t+1,200 = 0\\0.4t^2 -128t - 1200 = 0\\4t^2 - 1280t - 12000 = 0\\4(t^2 - 320 t - 3000) = 0\\t^2 - 320t -3000 = 0\\t = \frac{-(-320)\pm \sqrt{(-320)^2 - 4 \times 1 \times (-3000)}}{2 \times 1}\\t = \frac{320 \pm 338.23}{2}\\t = \frac{320 + 338.23}{2} \ or \ t = \frac{320 - 338.23}{2}\\t = 329.115 \ or \ t = -9.115$

But t = -9.115 is not possible as time cannot be negative

So, the owl population will disappear after 329.12 years

To learn more about quadratic equation, refer to the link-

brainly.com/question/1214333

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7 0

1 year ago

Two fuel tanks with the dimensions shown have the same volume. What is the value of ?

mamaluj [8]

Answer:

The height is 2ft

Step-by-step explanation:

6 0

3 years ago

Kia wrote the number 85 on the board.is 85 a prime or composite number ? EXPLAIN

Andrei [34K]

Answer:

Prime

Step-by-step explanation:

4 0

3 years ago

Can anyone plz help me

Andrew [12]

Let's solve number 7 step-by-step.
y/23=7
Step 1: Multiply both sides by 23.
y/23=7
(y23)*(23)=(7)*(23)
y=161 is our answer.

Let's solve number 8 step-by-step.
n−4.85=12.6
Step 1: Add 4.85 to both sides.
n−4.85+4.85=12.6+4.85
n=17.45 is our answer.


Let's solve number 12 step-by-step.
m/5=8
Step 1: Multiply both sides by 5.
m/5=8
(m/5)*(5)=(8)*(5)
m=40 is our answer.


Let's solve number 16 step-by-step.
a/12=8
Step 1: Multiply both sides by 12.
a/12=8
(a/12)*(12)=(8)*(12)
a=96 is or answer.

6 0

3 years ago

In triangle ABC, the measure of angle A is 90 ° . Angle B is congruent to angle C. What is the measure of angle B in degrees?

densk [106]

Answer: 45 degrees

Step-by-step explanation:

3 0

2 years ago