MATHEMATICS COLLEGE

HELP!How do you derive the equation of a circle?
How do you identify the center and radius of a circle?
How do you define the radian measure of an angle?
How are arc length and area of a sector related to proportionality?

Answers

Answer 1
Answer:

Answer:

How do you derive the equation of a circle?

you can reverse the circle formula

How do you identify the center and radius of a circle?

You can identify the center because it is the middle of the circle and the radius can be draw from the center to the round part.

How do you define the radian measure of an angle?

it is the ratio of the length of the arc the angle forms÷the radius of the circle

How are arc length and area of a sector related to proportionality?

sector x radian

area = (r^2 x)/2

arc length = r x

they are not propotional

because Area / arc length = r/2 , (it's not a constant)

High Hopes

Barrii

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The number of people who caught a col is 8t-5t^2+t^3,. A9nd the number of people who recovered are t-t^2+1/5t^3. Write a polynomial for people who are still sick

Answers

well.. so many folks caught a cold
so many off that total, recovered,
keep in mind that, the folks who recovered
are just a fraction of the ones who were
sick

so... simply subtract the "recovered" polynomial,
from the "caugh cold" polynomial, namely
\begin{cases} 8t-5t^2+t^3\impliedby &\textit{caught a cold}\n \textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\n \cfrac{5-t^2+1}{5t^3}\impliedby &recovered \end{cases} \n \quad \n\ [8t-5t^2+t^3]-\left[ \cfrac{5-t^2+1}{5t^3} \right]\implies \textit{still sick}
The number of people who caught a col is 8t-5t^2+t^3,. A9nd the number of people who recovered are t-t^2+1/5t^3.

Solve by graphing

y+5 = 2x
3y + 6x = -3

Answers

Answer:

(1, -3)

Step-by-step explanation:

Use Desmos! It's really useful.

Mark's football team has scored about 24 points each game. They played 12 games this season.What is the best estimate for the total number of points they scored in the season?

Answers

Answer:

36

Step-by-step explanation:

well you could add 24+12 which equals 36

if a bag contains 18 red, 6yellow, 24blue 8white balloons what is the part to whole ratio of white ballons to all ballons

Answers

Answer:

8:56 or 1:7

Step-by-step explanation:

combine all the marbles = 56

White = 8

Ratio = White/All = 8/56 = 1/7

Find the product (-2)(3)

Answers

Answer:

- 6

Step-by-step explanation:

Step 1:

( - 2 ) ( 3 )       Equation

Step 2:

- 2 × 3        Open Parenthesis

Answer:

- 6      Multiply

Hope This Helps :)

Answer:

Multiply -2 with 3

Step-by-step explanation:

What is an equation of the line that passes through the points (3,4) and (5,8)

Answers

Answer:

i think 5

Step-by-step explanation:

Step-by-step explanation:

In the equation y=mx+b, 'm' is the slope of the line and 'b' is the y-intercept.  

First, you should find the slope of the line.  To do this, use the equation M=y2-y1/x2-x1.  Using the two given points (3,6) and (8,4), you can solve for M.  

M=4-6/8-3

M=-2/5 (-0.4 in decimal form)

Now, your equation is y=-0.4x+b

Next you must solve for b to find the y-intercept.  You can do this by subbing one of the given points in for x and y.  

Using the point (3,6):

y=-0.4x+b

6=-0.4(3)+b

6=-1.2+b

Isolate b:

6+1.2=b

b=7.2

And now you have the equation of the line!

y=-0.4x+7.2 (IN FRACTION FORM: y=-2/5x+36/5)
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