MATHEMATICS MIDDLE SCHOOL

Formula of arc length

Answers

Answer 1
Answer: The formula is

(theta)/360 · 2(pi)r

theta is the given angle

r is radius of the circle
Answer 2
Answer: A formula of an arc length, starting from degrees is θ/360 * 2πr.

Hope this helps!

If you have any questions, please comment below.

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AC = 4, AE = 7, AD = 10, what is the length of AB? PLZ HELP
Find the product of two numbers whose sum is 11 and diffence is 3​
can someone please help me asap you know i help you when needed anyways i need to be able to plot the x and y coordinates so how do i do that? when y=5 times 2^x x is the value i need to plug in to plot it on the graph the graph goes up until 20 so i just need some x values please
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What is a quotient in math

Answers

The 'quotient' is the result of a division problem.
A quotient in math is an answer to a division problem.

Round 16,311 to the nearest thousand

Answers

The round off value of 16311 is

what is rounding off?

Rounding off means a number is made simpler by keeping its value intact but closer to the next number. It is done for whole numbers, and for decimals at various places of hundreds, tens, tenths, etc.

Given:

16311.

Now,

To round off nearest thousand focus on the place value of hundred place value.

Now, focus the value on hundred place value is less than 5 or greater than 5.

As, the number is less than 5 it will go towards previous number.

The round will lie between 16000 and 17000.

hence, the round off will be 16000.

Learn more about round off here:

brainly.com/question/13391706

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16000. 
You just need to take the numbers in the thousands place and left, and if the numbers on the right are greater than 500, you round up. In this case, 311 is less than 500 so you round down and get 16000.

What is the anwser to 450mg=g

Answers

Since 1000 mg is one g then the answer is .45 . So 450mg=.45g. Hope I helped.

What is the perimeter of the figure to the nearest tenth of a millimeter?



A.
9.4 millimeters

B.
12.0 millimeters

C.
21.4 millimeters

D.
30.8 millimeters

Answers

We have to calculate the perimeter of the figure to the nearest tenth of a millimeter. This figure is made of a rectangle and a half of a circle. The first figure has the perimeter: 3 + 6 + 3 = 12 mm. The second figure has the perimeter: 2 * Pi * r / 2 = Pi * r ; and the radius : r = 6/2 = 3 mm. So Pi * 3 = 3.14 * 3 = 9.42. Fimally : 12 + 9.42 = 21.42 or 21.4 to the nearest tenth. Answer: C. 21.4 millimeters.

The equation of the line passing through the points (4, 15) and (2, 25) can be expressed as y = mx + b. Give the value of b.

Answers

Equation of any line is given by y-mx+b where m is the slope and b is the y intercept.

Two points are given to us .Let us first find the slope

Slope of the points (4,15) and (2,25) is the difference of y divided by difference of x coordinate

m= (25-15)/(2-4)=(10)/(-2) =-5

Slope m= -5 and any (x,y)=(4,15)

We put these values in y=mx+b to find b (Any of the two given points can be taken as (x,y)

15=-5(4)+b

15=-20+b

Adding 20 both sides

15+20=-20+20+b

35=b

Or b=35.

Slope formula: y1-y2/x1-x2=m, given that x and y are coordinates and m is the slope. You have two sets of coordinates in your question, so I will first use those to find the slope of the equation:

15-25/4-2=m

This reduces to -10/2, or -5.

Slope intercept form: y=mx+b, given m is the slope and b is the y-intercept. Plug the slope in now.

y=-5x+b

Now, use one of the coordinates in the question to solve for b. I'm using (4,15).

15=-5(4)+b

15=-20+b

Add 20 to both sides.

35=b

Your equation is: y=-5x+35

and b=35

I hope this helps :)

Sylvia draws a scale model of her room in feet on a coordinate grid. The corners are located at (-8,4), (3, 4), (3, -6), and (-8, -6). She wants to apply a border all the way around the top of the walls. what is the length in feet of the border Sylvia needs?I'm learning perimeter

Answers

(3-(-8))+(4-(-6))+(3-(-8))+(4-(-6))\n(11)+(10)+(11)+(10)\n42

42 feet
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