pls help! will give brainlist!
find each angle measure in the regular polygon
a. 144°
b. 135°
c. 180°
d. 140°
Answers
A decagon is a 10-sided polygon, with 10 interior angles, and 10 vertices which is where the sides meet. A regular decagon has 10 equal-length sides and equal-measure interior angles. Each angle measures 144°
=====================================================
Work Shown:
E = exterior angle
n = number of sides
For any regular polygon, E = 360/n.
In this case, n = 10 as there are 10 sides, so E = 360/n = 360/10 = 36 degrees is the measure of each exterior angle.
Each interior angle is 180-E = 180-36 = 144 degrees
--------------
An alternative is to plug n = 10 into the formula below to get the measure of each interior angle i
i = 180(n-2)/n
i = 180(10-2)/10
i = 180(8)/10
i = 1440/10
i = 144
note: S = 180(n-2) is the sum of all the interior angles of any convex polygon. Dividing this sum over n will evenly divide the angle total to each interior angle.
Related Questions
Over which interval is the graph of f(x) = –x2 + 3x + 8 increasing? (–∞, 1.5) (–∞, 10.25) (1.5, ∞) (10.25, ∞)
Answers
Answer:
(–∞, 1.5) or A on edge
Step-by-step explanation:
took the test
Over (∞, 1.5), the graph of f(x) = -x² + 3x + 8 is increasing.
A relation f from a set A (the domain of the function) to another set B (the co-domain of the function) is called a function in math. f = {(a,b)| for all a ∈ A, b ∈ B}
It is given that function is
f(x) = -x² + 3x + 8
We know that graph of f(x) is increasing if f’(x) > 0
-2x + 3 > 0
-2x > -3
x < 3/2 or 1.5
Thus, the graph is increasing over (∞, 1.5).
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DEF is a right triangle.
HELP PLEASE
Answers
Answer:
True
Step-by-step explanation:
Because its at a 90 degree angle
Answer:
False
Step-by-step explanation:
Because I calculated the angles which were the numbers and it didn't add up to 90 degrees.
Which Numberline shows -4, -2, 1, and 2 plotted correctly? Pics for C and D are in the next picture.
Answers
Answer:
B
Step-by-step explanation:
I need help finding the perimeter of the house, please! Thx!
Answers
Answer: 124
Step-by-step explanation:
34+24+12+4+10+4+12+24
rewrite 1/2 using sixths
1 1/3-1/2= 8/6-
your help is appreceatedd
Answers
To rewrite 1/2 using sixths, we multiply both the numerator and denominator by 3. Therefore, 1/2 can be rewritten as 3/6.
Explanation:To rewrite 1/2 using sixths, we need to find an equivalent fraction with a denominator of 6. Fractions are equivalent when they represent the same value or proportion.
To convert the denominator from 2 to 6, we multiply it by 3. We must then do the same to the numerator to keep the value of the fraction the same. So, if we multiply both the numerator and denominator of 1/2 by 3, we get:
1 * 3 = 32 * 3 = 6Therefore, 1/2 can be rewritten as 3/6 in terms of sixths.
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Which of the following measurements is shorter than 1 meter select all that apply
Answers
Measurements shorter than 1 meter are usually in centimeters and millimeters; for example, the length of a hand or the size of a small worm. Longer measurements such as the length of a street or the distance between towns are in meters or kilometers.
Explanation:In the metric system, the length measurements shorter than 1 meter include centimeters (cm) and millimeters (mm). To identify which measurements are shorter than 1 meter, we can consider the size or distance involved. Some options include:
The size of a small worm is definitely shorter than 1 meter and would be measured in centimeters or even millimeters.The height of a light switch is also less than 1 meter and can be measured in centimeters.The length of a hand is smaller than 1 meter and would be measured in centimeters.On the other hand, measurements that are likely to be equal to or longer than 1 meter might include:
The length of a street, which would be measured in meters or kilometers.The distance from one town to the next, which would be measured in kilometers.The depth of a pool, which could be measured in meters depending on the pool's depth.Understanding that 1 meter is roughly the distance from fingertip to fingertip when arms are stretched out to the sides can help visualize the scale when deciding on the appropriate unit for measuring length.
What is the volume, in cubic millimeters, of the composite figure? (Round to the nearest hundredth. Use 3.14 for Pi.)V cylinder = pi r squared h. V sphere = four-thirds pi r cubed.
A cylinder and half sphere. Both have a radius of 4 millimeters. The cylinder has a height of 6 millimeters.
Answers
Answer:
Volume of composite is 320.28mm³
Step-by-step explanation:
This problem bothers on the mensuration of solid shapes, cylinder and sphere,
to solve the volume of the composite figure
1.Let us solve for the volume of the cylinder
V= πr²h
Given radius r= 4mm
Height h= 6mm
V= 3.14*(4)²*6
V=3.14*16*6
V= 301.44mm³
2. Let us solve for the volume of sphere
V= 4/3πr³
V= 4/3*3.14(4)³
V= 4/3*3.14*9
V= 113.04/3
V= 37.68mm³
But the sphere is half
So V= 37.68/2
V= 18.84mm³
Hence composite volume is
18.84+301.44
Volume = 320.28mm³
On a coordinate plane, a line goes through (0, negative 5) and (5, 0).
A system of equations consists of a line s of the equation y = x - 5 that is graphed in orange, and a line t that passes through the points (0, 2) and (8, -4). The equation of line t is y = −3
4
x + 2. What is the solution to this system of linear equations?
(_,_)
Answers
Answer:
(5,-5)
Step-by-step explanation:
there is 5 and there is -5 therefore it make s(5,-5)
Answer:
4,-1
Step-by-step explanation:
i just did the assingment
Does 4 divided by 3 = 3/4?
Answers
Explain how you can find the area of a polygon
Answers
Step-by-step explanation:
To find the area of a regular polygon, all you have to do is follow this simple formula: area = 1/2 x perimeter x apothem. Here is what it means: Perimeter = the sum of the lengths of all the sides. Apothem = a segment that joins the polygon's center to the midpoint of any side that is perpendicular to that side.Final answer:
The area of a polygon can be estimated using a grid to count squares, with specific formulae used for regular shapes. Irregular shapes can be broken down into simpler shapes, and the areas summed up, or approximated as areas under a curve using rectangles.
Explanation:
To find the area of a polygon, one approach can be to approximate the area using graph paper. You would place the polygon over a grid and count the number of squares that are completely covered by the polygon. Partial squares would be estimated. For polygons with straight sides like triangles, rectangles, and other regular shapes, you can use specific formulae. For example, the area of a triangle is found using the formula A = wh/2, where 'w' is the base width and 'h' is the height.
To find the area of irregular shapes, the shape can be broken down into a combination of known shapes, then the area for each known shape is calculated and summed up. For instance, if you're finding the area within a curve represented by a graph, you can approximate the area under the curve by summing up the areas of rectangles (or triangles) that fit under the curve.
NEED ASAP!!!!By visual inspection, determine the best-fitting regression model for the data plot below
A.No pattern
B.Quadratic
C.Exponential
D.Linear
Answers
Answer: Linear
Step-by-step explanation:
Answer:
linear
Step-by-step explanation:
a p e x
Which table represents a linear function?
Answers
The table that represents linear function is table 1
What is linear function?A linear function is a mathematical expression of the form f(x) = mx + b, where x is the variable, m is the slope, and b is the y-intercept.
It represents a straight line on a graph, with constant rate of change.
Table 1, shows clearly a linear function property,because the rate of increase in y is proportional to rate of increase in x.
Slope = 25-15/5-3 = 10/2 = 5
y -15 = 5( x - 3)
y -15 = 5x -15
y = 5x
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Which of the following are operations in the algebra of sets?
multiplication
union
division
Intersection
subtraction
Select all that apply
Answers
The area of the base of a rectangular juice box is 4 1/2 square inches. If the volume of the box is 18 cubic inches, how tallis the box. (Please answer with the number only)
Answers
Answer:
Height = 4 inches
Step-by-step explanation:
Volume of a Rectangular prism = Area of the base * Height
We can rearrange this to find the height
Height = Volume ÷ Area of the base
Substitute in our numbers and solve for height
Height = 18 ÷ 4.5
Height = 4 inches
Janile went to the nurse to get her height and weight measured. The nurse said that
Janile is 59 inches tall. How tall is she in feet and inches?
Answers
Answer:
4 feet 11 inches
Step-by-step explanation:
Answer:
4fee and 11inch
Step-by-step explanation:
My teacher told me
I need to solve for x.
Answers
Step-by-step explanation:
cvgchhiyf t dB rb. well can b d 7fvbdrj sh rubber. CTN b cry
Write the product using exponents.
(-1\2). (1/2).(1/2).
Answers
The product (-1/2) \\cdot (1/2) \\cdot (1/2) simplifies to -1 \\cdot (1/2)^2, which equals -1/4 when written using exponents.
The product of these fractions, (-1/2) \\cdot (1/2) \\cdot (1/2), can be written using exponents. Since we are multiplying the same base, (1/2), we simply add the exponents. The fraction -1/2 can be thought of as (-1) \\cdot (1/2), so it won't affect the exponent but will contribute a negative sign to the product.
To use exponents, we count how many times the base (1/2) is used as a factor: twice. We can express this as (1/2)^2. Combining this with the negative sign from (-1/2), the final expression is -1 \\cdot (1/2)^2, which simplifies to -1/4 because (1/2)^2 = 1/4.
Subtract.
Your answer should be a polynomial in standard form.
(5p – p) – (7p? — 4p - 3)
Answers
Answer:
Step-by-step explanation:
Which of the following statements is NOT true regarding simplifying
rational expressions?
When dividing one rational expression by another rational expression, you
can rewrite your expression as a multiplication problem.
When multiplying two rational expressions together, you must first have a
common denominator.
When adding two rational expressions together, you must first have a
common denominator,
When multifying two rational expressions together, the numerators get
multiplied together while the denominators get multiplied together.
Answers
Answer:
The only untrue statement is
- When multiplying two rational expressions together, you must first have a
common denominator.
Step-by-step explanation:
A rational expression has a rational numerator and a rational denominator.
To investigate each of these statement, we take two arbitrary rational expressions
Rational expression 1 = (a/b)
Rational expression 2 = (c/d)
Taking the statements one at a time
- When dividing one rational expression by another rational expression, you
can rewrite your expression as a multiplication problem.
(a/b) ÷ (c/d) = (a/b) × (d/c)
This statement is obviously true.
- When multiplying two rational expressions together, you must first have a
common denominator.
(a/b) × (c/d) = (ac/bd)
We do not need b = d to do this multiplication, hence, this statement is false.
- When adding two rational expressions together, you must first have a
common denominator,
(a/b) + (c/d)
We first take an LCM, so that we then have
(ad/bd) + (bc/bd)
= (ad + bc)/bd
This statement is true also.
- When multiplying two rational expressions together, the numerators get
multiplied together while the denominators get multiplied together.
(a/b) × (c/d) = (ac/bd)
This statement is true.
So, only the second statement is not true.
Hope this Helps!!!
The table shows the type of super power students wish they had. Super power Students Flight 888 Super strength 101010 X-ray vision 666 Invisibility 121212
Answers
Answer:
the answer is A and B
Step-by-step explanation:
The ratio of the students who wish to have X-ray vision will be 1:6 and the probability of the student can fly will be 2 / 9. Then the correct options are A and B.
What is probability?Its basic premise is that something will almost certainly happen. The percentage of favorable events to the total number of occurrences.
The table shows the type of superpower students wish they had.
Super power Students
Flight 8
Super strength 10
X-ray vision 6
Invisibility 12
Total 36
Then the ratio of the students who wish to have X-ray vision will be
⇒ 6 / 36
⇒ 1 / 6
Then the probability of the student can fly will be
P = 8 / 36
P = 2 / 9
Then the correct options are A and B.
The complete question is given below.
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What is the mean of the data set?
{12, 14, 16, 14, 13, 18, 20, 16, 14, 23}
Answers
Answer:
16
Step-by-step explanation:
160/10 = 16
Answer:
16.75 or 16
Step-by-step explanation:
8 +3+7+7+ 10 = 35
What is the average value?
Answers
Answer:
7
Step-by-step explanation:
To find the average value, divide the sum by the number of numbers
8 +3+7+7+ 10 = 35 /5= 7
The average value is 7
Answer:
Step-by-step explanation:
8+3+7+7+10 = 35
35=35
The volume of a sphere with a radius of 5 cm is approximately _[blank]_ cm3.
Enter the value that correctly fills in the blank in the previous sentence.
Use 3.14 for π, and round your answer to the nearest hundredths place if necessary.
Answers
Answer:
V = 523.33 cm^3
Step-by-step explanation:
The volume of a sphere is given by
V =4/3 pi r^3
We know the radius is 5
V = 4/3 (3.14) 5^3
V=523.3333333
Rounding to the hundredths place
V = 523.33 cm^3
Answer:
523.33 cm
Step-by-step explanation:
V= 4/3 pi r3
=4/3 pi (5 cm)3
=4/3 pi (125cm)
=4/3 3.14 (125cm)
=4/3 (392.5)
Volume= 523.33 cm
PLZ HELP DEPENDS ON MY GRADE WILL BE MARKING BRAINLIEST ANSWER! I NEED AN EXPLANATION AND VERIFIED ANSWER! I WILL BE MARKING BRAINLIEST!
Answers
Answer:
A
Step-by-step explanation:
Can someone help me with this
Answers
Explanation:
Answer:
[tex]x = 9[/tex]
Step-by-step explanation:
[tex] - 9x + 1 = - 80 \\ - 9x = - 80 - 1 \\ - 9x = - 81 \\ \frac{ - 9x}{ - 9} = \frac{ - 81}{ - 9} \\ x = 9[/tex]
Simply 6(x+y) + (x-y)
Answers
Work: we distribute 6 to x and y and then add x and minus y
6•x
6•y
6x + x +6y - y
Combine like terms:
=7x + 5y
4 out of 5 students eat lunch in the cafeteria. How many of the 400 students would you expect to eat in the cafeteria? ( this has to deal with probability)
Answers
Answer: 320/400
Step-by-step explanation:
4/5
400 divided by 5= 80
4 times 80= 320
Answer:
320?
Step-by-step explanation:
An anchor chain weighs 100 pounds for every meter of chain. What is the mass of anchor chain in kilograms if it touches the bottom of the sea at 180 meters? (Assume the anchor is fully payed out. Round to the nearest whole number and do not include units or commas in your answer.) Note: There are 0.454 kilograms in a pound.
Answers
Each meter weighs 100 pounds.
There are 180 meters.
So, it weighs 18000 pounds.
There are 0.454 kilograms in a pound.
There are 0.454*18000=8172 kilograms in 18000 pounds.
Megan walked 4/10 mile to the park she walk the same distance home how much does she walk all together write in simplest form
Answers
Answer:
4 over 5 {4/5}
Step-by-step explanation:
4/10 + 4/10 is 8/10, divide both by 2 and you get 4/5
Answer: [tex]\frac{4}{5}[/tex] miles
Step-by-step explanation:
She doubled the distance; multiply by 2.
[tex]\frac{4}{10}*2=\frac{4}{5}[/tex]
Suppose you invest $15,000 at the age of 35, and agree to start receiving
payments at the age of 45. At age 41, you decide you want to withdraw $5000
from your account. The insurance company charges you 30% of the
withdrawal. What is the surrender charge?
Answers
Answer:
1,500
Step-by-step explanation:
Ok so all you do is fine put 30% of 5,000 and that would be 1,500
and that's you answer.
Have a great day bye!