Given parameters:
Number of sides of the regular body = 10
A decagon has 10 sides.
Unknown:
Sum of the measures of the interior angles = ?
Solution;
To find the sum of the interior angles of a decagon; use the expression below:
Sum of interior angles = (n - 2) x 180
where;
n = number of sides;
So,
Sum of interior angles = (10 - 2) x 180 = 1440°
The sum of interior angle of a decagon is 1440°
PLEASE help!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer: 11
Step-by-step explanation: 5x-15= 3x+7
Combine like terms: 2x= 7+15
Add = 2x= 22
Divide: equals 11
give the correct answer
Solve all questions to get brainliest
Let me translate it to English before I answer your question.
Hello friend, how are you? Today I want to write about my schedule of classes.
My classes start at seven thirty in the morning. I have five classes everyday. My math class, it starts at seven thirty. Then a biology class and it starts at half past nine. I have a twenty minute break at noon. It starts at half past seven. I always have soccer practice after school, but today I have to come home early because I have to study for the biology test. Take care.
First answer: 20 mins
Second answer: 7:30
Third answer:7:30
Fourth answer:9:05
Hope this helps you!!
Stay safe.
What is the equation of
Slope is 0, y - intercept is 5
While attending a baseball game, Eva buys hamburgers and hotdogs for her family. The number of hotdogs bought is five more than the number of hamburgers bought. Hamburgers cost $6.25 each and hotdogs cost $3.75 each. Eva spent a total of $58.75 on the hamburgers and hotdogs.
a) let n be the number of hamburgers Eva bought. Set up an equation that models the information given in the problem
b) how many hamburgers did Eva by?
I need a answer by Monday
Answer:
Number of hamburgers bought = 4
Number of hotdogs bought = 9
Step-by-step explanation:
Let
Number of hamburgers bought = n
Number of hotdogs bought = n + 5
Hamburgers cost = $6.25
Hotdogs cost = $3.75
Total cost = $58.75
6.25n + 3.75(n + 5) = 58.75
Open parenthesis
6.25n + 3.75n + 18.75 = 58.75
Collect like terms
6.25n + 3.75n = 58.75 - 18.75
10n = 40
Divide both sides by 10
n = 40 / 10
= 4
n = 4
Number of hamburgers bought = n = 4
Number of hotdogs bought = n + 5
= 4 + 5
= 9
Is 1.43 grater than, less than, or equal to 1.043?
1.43 1.043?
1.43=1.043?
Please help!
Answer:
greater than
Step-by-step explanation:
Josh wants to determine the number of loaves of bread he can bake using the 13 and one-third cups of flour he has. If each loaf requires 3 and four-fifths cups of flour, how many loaves can Josh bake? 3 loaves of bread 4 loaves of bread 50 loaves of bread 51 loaves of bread
Unit rate is the quantity of an amount of something at a rate of one of another quantity.
The number of loaves Josh can bake with 13 and one-third cups of flour is 4 loaves.
What is a unit rate?It is the quantity of an amount of something at a rate of one of another quantity.
In 2 hours, a man can walk for 6 miles
In 1 hour, a man will walk for 3 miles.
We have,
Josh wants to determine the number of loaves of bread he can bake using the 13 and one-third cups of flour he has.
13(1/3) can be written as,
= 13(1/3)
= 40/3
Each loaf requires 3 and four-fifths cups of flour.
This can be written as,
3(4/5) cups of flour = 1 loaf
19/5 cups of flour = 1 loaf
Multiply 5/19 on both sides.
1 cup of flour = 5/19 loaf
Multiply 40/3 on both sides.
40/3 cups of flour = 40/3 x 5/19 loaf
40/3 cups of flour = 3.5 loaf
This means we can make 4 loaves.
Thus,
The number of loaves Josh can bake with 13 and one-third cups of flour is 4 loaves.
Learn more about unit rates here:
https://brainly.com/question/11258929
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What are the properties used to solve 4(x+3)=20
Answer:
Multiproperty
Step-by-step explanation:
To solve this problem, we use different properties to arrive at our answer.
Given expression;
4(x + 3) = 20;
First we use the distributive property to expand;
4x + 12 = 20
Now use subtraction property by adding (-12) to both sides;
4x + 12 + (-12) = 20 + (-12)
4x = 8
you can now divide by 4,
x = 2
The king gave Ron 6 gold coins.
He gave Polly 3 fewer coins than he gave Ron.
How many coins did Polly get?
Answer:
3 gold coins
Step-by-step explanation:
6 minus 3 is 3
Find the root of 5x-20=0
Answer:
x=4
Step-by-step explanation:
5x-20=0
+20 +20
5x=20
5 5
x=4
Add 20 to both sides cancelling out the left side.
Than you divide 5 leaving the x on one side and 20 over 5 which is 4
y = 1.25х + 10
Help me please.
Answer:
This is a linear equation, there's nothing to simplify.
The slope in this equation is 1.25
The y-intercept of this equation is 10
Twice a number plus four equals six
Step-by-step explanation:
Let say the unknown number we dont know is x
2x+4=6
2x=6-4
2x=2
x=2/2
x=1
So the unknown number is 1
Write the equation of the line that passes through the point (4, 3) and has a slope of
5/4.
y = 5/4x + 17
y = 5/4x - 2
y = 5/4x - 8
y = 5/4x + 1/4
Solve for h.
7a = -9 + 2h
Answer: h = 7a + 9 divided by 2
URGENT 8th grade math
Answer:
inequality is n< with the line under 12 or n= , with the line under it 12
Step-by-step explanation:
Jeremy combines 7.28 liters of red paint with 8.06 liters of blue paint to make purple paint. He pours the paint equally into 4 containers, and has 1.58 liters of paint left over. How many liters of paint are in each container?
(use tape diagram to solve)
Answer:
7.67 liters
Step-by-step explanation:
x+(y+z) = (x+y) + z is the example of what property?
Sanjay picked p peaches. Zach picked 17 times as many peaches as Sanjay. Write an expression that shows how many peaches Zach picked.
Type an asterisk ( * ) if you want to use a multiplication sign and a slash ( / ) if you want to use a division sign.
Answer:
17p
Step-by-step explanation:
Since you don't know how much Sanjay picked you can only explain as a variable. So just put 17 next to p which is 17*p
help , this is a big grade.
Answer:
-8
Step-by-step explanation:
looked it up on the internet
Need HELP now please! It’s for my HW that’s due! I will mark BRAINLIEST to the RIGHT ANSWER!
Answer:
The first should be (x+6, y-(-10).
The others, not sure but you have to plug them in.
Answer:
See attached
Step-by-step explanation:
The form is filled in and attached
What is the slope of this graph
The temperature fell from 0 degrees farenheight to 6 3/5 in 2 1/5 hours. What was the temperature change per hour?
A. -3
B. -4 2/5
C. 3
D. 4 2/5
Answer with step-by-step explanation:
C: 3
This is because 6 3/5 is a positive number, and 6 3/5 ÷ 2 1/5 = 3
Hope this was helpful! (brainliest please)
I need help bad I'm stuck
Answer:
All Real Numbers
Step-by-step explanation:
Ok so domain is x and x is going through 0 and you are going from -♾ to ♾ which is everything so all real numbers
What is the measure of ZBFA?
D
o
3x+4
2x+16
Ε
F
5x-10
В
A
Idk
Answer:
∠BFA = 50°
Step-by-step explanation:
To find∠ BFA we first have to find ∠BFE this is how we'll do it!
5x-10 + 3x+4 + 2x +16 = 180 (collect like terms)(5x+3x+2x)(-10+4+16)
10x + 10 = 180 (minus 10 on each side)
10x = 170 (divide by 10 on each side)
x = 17
Plug in. (Plug in the rest of the equations)
5(17)-10=75°
3(17)+4=55°
2(17)+16=50°
∠BFA would equal 50 degrees because it is vertical of ∠DFE.
When two angles are vertical to each other they equal the same amount or in other words they're congruent.
Hope this helps!!!
Write an equation of the line passing through the point (7, 3) that is parallel to the line 4x−7y=9.
Answer:
The equation of the line is y = 4x/7 - 1
Step-by-step explanation:
The equation of a straight line can be represented by
y = mx + c
where m represents the slope and c represents the y-intercept
So for;
4x - 7y = 9
7y = 4x - 9
y = 4x/7 - 9/7
The slope here is 4/7
Since the line we are trying to form is parallel, then the slope of the line is 4/7 also, since parallel lines have equal slope
So the equation of the new line will be;
y = 4x/7 + c
To get c, just put the point x = 7 and y = 3
3 = 4/7(7) + c
3 = 4 + c
c = 3-4
c = -1
So the equation of the line is;
y = 4x/7 - 1
Solve for d in the proportion.
10/15 equals d/12
Answer:
8
Step-by-step explanation:
Since there are two fractions, it is easiest to cross multiply the fractions before doing anything else. Basically:
10/15 = d/12 becomes 120 = 15d.
then you just divide 15 to both sides to get your answer:
d = 120/15, which is the equivalent of d = 8.
Do supplementary angles always form a straight line
Answer:
Yes
Step-by-step explanation:
Supplementary angles are a set of angles that always add up to 180 degrees.
The cost y (in dollars) of renting a segway for x hours is y=30x+25. Find the initial fee and the cost per hour.
Given:
The cost y (in dollars) of renting a segway for x hours is
[tex]y=30x+25[/tex]
To find:
The initial fee and the cost per hour.
Solution:
We have,
[tex]y=30x+25[/tex] ...(i)
The slope intercept form of a linear equation is
[tex]y=mx+b[/tex] ...(ii)
where, m is slope is b is y-intercept or initial value.
From (i) and (ii), we get
[tex]m=30,b=25[/tex]
The value of m is 30, so the slope is 30. It means cost per hour is $30.
The value of b is 25, so y-intercept is 25. It means the initial fee is $25.
1. Select all of the true statements.
A. Pi is the area of a circle of radius 1.
B. Pi is the area of a circle of diameter 1.
C. Pi is the circumference of a circle of radius 1.
D. Pi is the circumference of a circle of diameter 1.
E. Pi is the constant of proportionality relating the diameter of a circle to its circumference.
F. Pi is the constant of proportionality relating the radius of a circle to its area.
We want to see which of the given statements about the number pi are true.
The correct options are: a, d, and e.
First, let's talk a little bit about the number pi.
The irrational number pi is defined as the quotient between a circle's circumference and its diameter.
So if we know that a circle has a diameter D, the circumference of that circle is given by:
C = pi*D
Now let's analyze each option to see which ones are true.
a) "Pi is the area of a circle of radius 1."
The area of a circle of radius R is given by:
A = pi*R^2
So if the radius of this circle is R = 1. we have:
A = pi*1^2 = pi
So the area of this circle is pi, thus the statement is true.
b) "Pi is the area of a circle of diameter 1."
The diameter is twice the radius, so the radius of this circle is 0.5, we know that pi is the area of a circle of radius 1, not a circle of radius 0.5, so this is false.
c) "Pi is the circumference of a circle of radius 1."
The circumference of a circle of radius R is given by:
C = pi*2*R
If the radius is equal to 1 we have R = 1, then:
C = pi*2*1 = 2*pi
The circumference of this circle is 2*pi, not pi, so this is false.
d) "Pi is the circumference of a circle of diameter 1."
We know that the circumference of a circle of diameter D is:
C = pi*D
So if D = 1, we have:
C = pi*1 = pi
So the circumference of this circle is equal to pi, thus, this statement is true.
e) "Pi is the constant of proportionality relating the diameter of a circle to its circumference."
A proportional relation is:
y = k*x
where k is the constant of proportionality.
The relation between the circumference is given by:
C = pi*D
So yes, pi is the constant of proportionality, this is true.
F) "Pi is the constant of proportionality relating the radius of a circle to its area."
The area equation is:
A = pi*R^2
note that the radius is squared, so this is not a proportional relation, then the statement is false.
Finally, we can conclude that the true statements are:
a, d, e.
If you want to learn more, you can read:
https://brainly.com/question/7135052
Plz Help!
A function f represents the percentage of life remaining in a cell phone battery. The life of a cell phone battery is dependent on the number of minutes, a , that a cell phone has been in use. In the context of the problem, explain the meaning of the following statements:
D. f(22)
E. f(a) = 50
Answer:
I need help with that too
Step-by-step explanation:
Please help me with this I will mark you brainliest
AC=4.26 cm
Hope this helps you