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2 years ago

The unit to measure an angle is a

Mathematics

2 answers:

cricket20 [7]2 years ago

3 0

It's a degree, however in algebra there are also radians and gradians

DENIUS [597]2 years ago

3 0

The unit to measure an angle is a Degree

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A local nursery sells a large number of ornamental trees every year. The owners have determined the cost per tree C for buying a

Karo-lina-s [1.5K]

The minimum cost is achieved when 150 trees are produced giving a minimum cost of $27.5

Polynomial is an expression that involves the operations of addition, subtraction, multiplication of variables.

Let C represent the cost for buying and caring for n trees. Given that:

C = 0.001n² - 0.3n + 50.

The minimum cost is at dC/dn = 0, hence:

dC/dn = 0.002n - 0.3

0.002n - 0.3 = 0

0.002n = 0.3

n = 150

C(150) = 0.001(150)² - 0.3(150) + 50 = 27.5

The minimum cost is achieved when 150 trees are produced giving a minimum cost of $27.5

Find out more at: brainly.com/question/25836610

8 0

2 years ago

Prove that root 7 is irrational by the method of contradiction

Alchen [17]

Let assume that $\sqrt7$ is a rational number. Therefore it can be expressed as a fraction $\dfrac{a}{b}$ where $a,b\in\mathbb{Z}$ and $\text{gcd}(a,b)=1$ .

$\sqrt7=\dfrac{a}{b}\\\\7=\dfrac{a^2}{b^2}\\\\a^2=7b^2$

This means that $a^2$ is divisible by 7, and therefore also $a$ is divisible by 7.

So, $a=7k$ where $k\in\mathbb{Z}$

$(7k)^2=7b^2\\\\49k^2=7b^2\\\\7k^2=b^2$

Analogically to $a^2=7b^2$ ------- $b^2$ is divisible by 7 and therefore so is $b$ .

But if both numbers $a$ and $b$ are divisible by 7, then $\text{gcd}(a,b)=7$ which contradicts our earlier assumption that $\text{gcd}(a,b)=1$ .

Therefore $\sqrt7$ is an irrational number.

8 0

3 years ago

The local parts shop buys a machine that cost $500,000. Its value depreciates exponentially each year by 10% what is the machine

Irina18 [472]

Answer:

Step-by-step explanation:

4 0

2 years ago

Which expression correctly shows 2x^5y−2x^2y factored completely over the integers?

Nat2105 [25]

Answer:

Option D, 2x^2y(x - 1)(x^2 + x + 1)

Step-by-step explanation:

Step 1: Factor

2x^5y - 2x^2y

2x^2y(x^3 - 1)

2x^2y(x - 1)(x^2 + x + 1)

Answer: Option D, 2x^2y(x - 1)(x^2 + x + 1)

3 0

2 years ago

Find the value of x for which ABCD must be parallelogram

Zielflug [23.3K]

Since this is a parallelogram, both bases are equal. You can set them equal to each other to find x:

6+3x=x+14

Subtract x from both sides.

6+2x=14

Subtract 6 from both sides.

2x=8

Divide by 2.

x=4

Hope this helps! :)

3 0

2 years ago