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3 years ago

Cell phone plans, for both

Mathematics

1 answer:

Komok [63]3 years ago

4 0

Answer:

a) company T

b) company S

c) in 20 minutes of use

a) they're perpendicular

b) it doesn't change, it's direct propositional

c) company K

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Can anyone help me with this calc question?

Zepler [3.9K]

Answer:

0.7048

Step-by-step explanation:

Use trap rule on the calc

6 0

4 years ago

Find the equation of a circle that has a diameter with the endpoints given by the points A(-4,9) and B (- 2, - 3) )

Aleksandr-060686 [28]

The equation of the circle is $(x+3)^{2}+(y-3)^{2}=37$

Explanation:

Given that the endpoints of the circle are A(-4,9) and B(-2,-3)

We need to determine the equation of the circle.

Center:

The center of the circle can be determined using the midpoint formula,

$Center=(\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2})$

Substituting the coordinates A(-4,9) and B(-2,-3), we get,

$Center=(\frac{-4-2}{2},\frac{9-3}{2})$

$Center=(\frac{-6}{2},\frac{6}{2})$

$Center=(-3,3)$

Thus, the center of the circle is (-3,3)

Radius:

The radius of the circle can be determined using the distance formula,

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

Substituting the center (-3,3) and the endpoint (-4,9), we get,

$r=\sqrt{\left(-4+3\right)^{2}+\left(9-3\right)^{2}}$

$r=\sqrt{\left(-1\right)^{2}+\left(6\right)^{2}}$

$r=\sqrt{1+36}$

$r=\sqrt{37}$

Thus, the radius of the circle is $\sqrt{37}$

Equation of the circle:

The standard form of the equation of the circle is given by

$(x-a)^{2}+(y-b)^{2}=r^{2}$

where (a,b) is the center and r is the radius.

Substituting the values, we have,

$(x+3)^{2}+(y-3)^{2}=(\sqrt{37})^{2}$

$(x+3)^{2}+(y-3)^{2}=37$

Thus, the equation of the circle is $(x+3)^{2}+(y-3)^{2}=37$

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3 years ago

Jeff took his son to Great Clips to get his hair cut. His hair cut cost $9 with tax

agasfer [191]

Answer:

$10.80

Step-by-step explanation:

That’s the answer

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3 years ago

Unit Test

Elza [17]

Answer:

Its is C.i and iii only

Step-by-step explanation:

: )

6 0

4 years ago

Read 2 more answers

A man drove x miles per hour for 3 hours and (2x-60) miles per hour for the next 4.75 hours. A)Express the total distance travel

erik [133]

Answer:

$12.5x-285$ .

Step-by-step explanation:

We are told that a man drove x miles per hour for 3 hours, so he traveled 3x miles in three hours.

We are also told that he drove (2x-60) miles per hour for the next 4.75 hours. So The distance traveled by in next 4.75 hours will be:

$4.75\cdot (2x-60)=9.5x-285$

To find the total distance traveled by man we will add distances traveled by him in first 3 hours and next 4.75 hours.

$\text{The total distance traveled}=3x+9.5x-285$

Upon combining like terms we will get,

$\text{The total distance traveled}=(3+9.5)x-285$

$\text{The total distance traveled}=12.5x-285$

Therefore, the total distance traveled in terms of x will be $12.5x-285$ .

6 0

3 years ago