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2 years ago

Who know these questions answers is

Mathematics

2 answers:

Yanka [14]2 years ago

8 0

Answer:

4) The square root of 25 is rational

5) pi is irrational

Step-by-step explanation:

To know if the answer is rational or irrational, check to see if they can be turned into a fraction.

AnnZ [28]2 years ago

3 0

Answer:

4) $\sqrt{25}$

5) $\pi$

Step-by-step explanation:

4) $\pi$ is irrational.

$\sqrt{2}$ and $\sqrt{3}$ are also irrational.

$\sqrt{25}$ = 5. 5 is a whole number and thus is rational.

5) 16.5% = $\frac{16.5}{100}$

0.0675 is a terminating decimal so it is rational.

8 $\frac{3}{4}$ = 8.75 is also a terminating decimal so it is rational.

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To purchase $12,900 worth of machinery for her business, Melissa made a down payment of $2100 and took out a business loan for t

Ierofanga [76]

Answer:

a) $13588.08

b) $688.08

Step-by-step explanation:

Melissa had to purchase $12,900 worth of machinery for her business.

She made a down payment of $2100 and after that made monthly payments of $478.67 for the business loan for the rest.

Given that after years of paying monthly payments of $478.67, she finally paid off the loan.

Assume that she took 2 years to repay the loan.

a) Therefore, the total amount Melissa ended up paying for the machinery was $[2100 + (478.67 × 24)] = $13588.08 (Answer)

b) Therefore, the amount of interest that Melissa pay on the loan is $(13588.08 - 12900) =$688.08. (Answer)

4 0

3 years ago

If the endpoints of the diameter of a circle are (−8, −6) and (−4, −14), what is the standard form equation of the circle?

kondaur [170]

Equation of the circle is $(x+6)^{2}+(y+10)^{2}=20$ .

Solution:

The endpoints of the diameter of a circle are (–8, –6) and (–4, –14).

Center of the circle = Mid point of the diameter

Mid point formula:

$$P(x, y)=\left(\frac{x_{1}+x_{2}}{2}, \frac{y_{1}+y_{2}}{2}\right)$

Here, $x_1=-8, y_1=-6, x_2=-4, y_2=-14$

$$P(x, y) =\left(\frac{-8-4}{2}, \frac{-6-14}{2}\right)$

$$P(x, y) =\left(\frac{-12}{2}, \frac{-20}{2}\right)$

$$P(x, y) =(-6, -10)$

Center of the circle = (–6, –10)

Radius is the distance between center and any endpoint of the diameter.

To calculate the radius using distance formula.

$r=\sqrt{\left(x_{2}-x_{1}\right)^{2}+\left(y_{2}-y_{1}\right)^{2}}$

Here, $x_1=-6, y_1=-10, x_2=-8, y_2=-6$

$r=\sqrt{\left(-8-(-6)\right)^{2}+\left(-6-(-10)}\right)^{2}}$

$r=\sqrt{(-8+6)^{2}+(-6+10)^{2}}$

$r=\sqrt{(-2)^{2}+(4)^{2}}$

$r=\sqrt{20}$ units

The standard form of the equation of a circle is

$(x-a)^{2}+(y-b)^{2}=r^{2}$ , where (a, b) are center and r is the radius.

Here, center = (–6, –10) and $r=\sqrt{20}$

$(x-(-6))^{2}+(y-(-10))^{2}={(\sqrt{20})} ^{2}$

$(x+6)^{2}+(y+10)^{2}=20$

Equation of the circle is $(x+6)^{2}+(y+10)^{2}=20$ .

4 0

2 years ago

Cubes and cubes roots <br>27000

Natasha_Volkova [10]

Answer:

lcm for cuberoot

that is 2*2*2*5*5*5*3*3*3

make pairs of three common numbers and write them as one.

2*5*3=30

ans =30

check 30*30*30=27000

cube

multiply 27000 three times with itself

27000*27000*27000

=19683000000000.0

8 0

3 years ago

Jada has time on the weekends to earn some money. A local bookstore is looking for someone to help sort books and will pay $12.2

coldgirl [10]

Y= hx + ex ) x is the number of days jada has worked

3 0

2 years ago

Is anyone knows the answer? Thanks. What line has a slope of 0 and goes through (5, -8)

larisa [96]

Slope = 0
⇒ It is a horizontal like that cuts through the y-axis

At point (5, -8), y = -8
The equation of the line is y = -8

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Answer: y = -8
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8 0

3 years ago