Answer:
Step-by-step explanation:
The interior angle measure of a regular polygon is calculated with 180*(n-2)/n, where n represents the number of sides.
A regular octagon has 10 sides so it interior angle = 180*(10-2)/10
= 144
A tessellation is a tile pattern with the same polygon repeating. The polygon's interior angles must combine to form 360 degree. A regular octagon has interior angle of 144 degree which does not add to 360 degree. So a regular octagon cannot be used as the only shape in a regular tessellation.
The answer is 144°, no.
Answer:
Step-by-step explanation:
oct means 10
(n-2)/n * 180
= (10-2)/10 * 180
= 144°
144 + 144 = 288 < 360
144 + 144 + 144 = 432 > 360
so a regular octagon can NOT be used as the only shape in a regular tessellation.
ans is A
This question is about two positive numbers. Here are facts about these numbers:The numbers are consecutive even integers.The sum of the numbers is 38.
Now that we’ve learned how to solve word problems involving the sum of consecutive integers, let’s narrow it down and this time, focus on word problems that only involve finding the sum of consecutive even integers.
But before we start delving into word problems, it’s important that we have a good understanding of what even integers, as well as consecutive even integers, are.
Even Integers
We know that even numbers are integers that can be divided exactly or evenly by 22. Thus, the general form of the even integer nn, is n = 2kn=2k, where kk is also an integer.
In other words, since even numbers are the multiples of 22, we can represent an even integer nn by 2k2k, where kk is also an integer. So if we have the even integers 1010 and 1616,
Answer:
18 and 20
Step-by-step explanation:
x + x + 2 = 38
2x + 2 = 38
2x = 36
x = 18
x+2 = 20
find the mean and the median of the following data
number 1: 7, 6, 8, 12 ,15 ,7
number 2: 15 ,200 ,100, 130, 7
number 3: 60, 19, 12, 2 ,7 ,9
Answer:
Hope this helped! <3
Step-by-step explanation:
the median for number 1 is: 7.5 and the mean is 9.16667
the median for number 2 is: 100 and the mean is 90.4
the median for number 3 is: 10.5 and the mean is 18.16667
Answer:
Hi!
number 1: median: 8, 12 or 10
number 2: median: 100
number 3: median: 12, 2 or 7
number 1: mean: 9.16
number 2: mean: 90.4
number 3: mean: 18.16
Step-by-step explanation:
The mean is just all the numbers added up in a data set divided by how many numbers are in the data set. That gets you the average
The median is just the number in the middle of the data set.
Also for the first the median is either 10 or both 8 and 12 Because there's not 1 number in the middle it can be 8 and 12 of you want it averaged them it would be 10 I dont know which you want so you would have to figure that out
same with number 3
Also for the means it might vary depending if you need to round or not
An experiment observing the growth of two germ strand populations finds these patterns.
• The population of the first germ is represented by the function A(t) = (1-3)*+8.
• The population of the second germ is represented by the function B(x) = (1.3)+2+1.
Which function best represents function R, the ratio of the population of the second germ to the population of the first germ?
OB. R(5)
OA. R(3) = (1.3)65 +10
(2.6)85-8
oc R(x) = (1.3)31–0
OD. R() = (2.6)4+2+
Answer:
[tex]R(x) = (1.3)^{3x-8}[/tex]
Step-by-step explanation:
Given
[tex]A(x) = (1.3)^{x + 9}[/tex]
[tex]B(x) = (1.3)^{4x + 1}[/tex]
Required
Ratio B(x) to A(x)
This is calculated as:
[tex]R(x) = B(x) : A(x)[/tex]
Express as fraction
[tex]R(x) = \frac{B(x) }{A(x)}[/tex]
Substitute: [tex]A(x) = (1.3)^{x + 9}[/tex] and [tex]B(x) = (1.3)^{4x + 1}[/tex]
[tex]R(x) = \frac{(1.3)^{4x+1}}{(1.3)^{x+9}}[/tex]
Apply law of indices
[tex]R(x) = (1.3)^{4x-x+1-9}[/tex]
[tex]R(x) = (1.3)^{3x-8}[/tex]
What is the equation of a circle with center (-3, -5) and radius 4?
Answer:
The choose (A)
A- (x+3)²+(t+5)²=16
Answer:
A (x + 3)^2 + ( y + 5 )^2 = 16
Step-by-step explanation:
The formula for equation of a circle is (x - h ) ^2 + ( y - k ) ^2 = r ^2
( h , k ) represent the coordinates
r represents the radius
Plug in the numbers ( x - (-3) ) ^2 + ( y - (-5) ) ^2 = 4 ^2
2 negatives make a positive
So the equation would be (x + 3)^2 + ( y + 5 )^2 = 16
You also need to make sure you square the radius
Which inequality is true?
-4>-6
-4<-6
-4<-8 -8 > -4
Answer:
-4>-6
Step-by-step explanation:
come on dude
Write 5 19/20 as a decimal?
Answer:
0.95 0.85 0.78 0.47 0.9
Step-by-step explanation:
5 ways.
If tests are worth 60% of your grade, and you have a 76.8% in that class, and you fail that test, what will be your grade?
Answer:
70
Step-by-step explanation:
it depends on the grade you make, so if you were to make a 65.47, your grade would be a 70, so any grade less than 70 should be the answer, hope this helps!
Write an equation for the function that includes the points (1, 18) and (2, 54).
Answer:
y = 36x - 18
Step-by-step explanation:
(1,18) (2,54)
y2 - y1 / x2 - x1
54 - 18 / 2 - 1
36 / 1
= 36
y = 36x + b
18 = 36(1) + b
18 = 36 + b
-18 = b
what is the square root of 25??
Answer:
The square root of 25 is 5 because 5 times 5 is 25
Step-by-step explanation:
Which expression is equivalent to 12n - 6x + 48 ?
A. 6 (2n - x + 8 )
B. 6nx +48
C. 2(6n + x ) +48
D. 12n - 6 (x + 4)
Answer:
A. 6 (2n - x +8)
Step-by-step explanation:
Answer:
6(2n-x+8)
Step-by-step explanation:
If a number is in front of the bracket it means times everything on the inside by that number.
So you times everything by 6.
6×2n=12n
6×-x= -6x
6×8=48
Then you put it into an equation:
12n-6x+48
Hope this helps :)
In circle B with m
AC.
We need to find the angle measure of the minor arc which is [tex]\sf\widehat{AC}[/tex] . We note that the measure of a complete angle is 360 degree. So that ,
Using this :-
[tex]\sf : \implies \angle ABC + m\angle ABC = 360^o \\\\\sf: \implies 106^o + m\angle ABC = 360^o \\\\\sf: \implies m\angle ABC = 360^o - 106^o \\\\\sf: \implies \red{ m \angle ABC = 254^o }[/tex]
Hence the required answer is 254° .
Three friends will run race. If three friends no ties, in how many distinct order can these 3 friends finish the race?
===========================================================
Explanation:
Let's name the friends A, B, C
If person A is first, then B or C could be second and third.
So we have ABC or ACB as two possible outcomes.
If B is first, then either A is second or C is second. Meaning we have BAC or BCA.
If C is first, then we have CAB or CBA
Overall here are the 6 different ways to have the runners finish
ABC ... A is firstACB ... A is firstBAC ... B is firstBCA ... B is firstCAB ... C is firstCBA ... C is firstNote how for the first slot we have 3 ways to pick the winner. Then after that selection is made, we have 2 choices left, then 1 choice for third place. Therefore, 3*2*1 = 6 different outcomes are possible.
We can use the factorial operation on the calculator to do this with one button press, so we'd say 3! = 6. The exclamation mark means "multiply from 3 down to 1, counting down the whole time".
Another example of a factorial is:
5! = 5*4*3*2*1 = 120
33/23 as a decimal rounded to the nearest tenth?
Answer:
1.4
Step-by-step explanation:
33/23 = 1.434 ≈ 1.4 (rounded to the nearest tenth)
The answer is 1.43
What is a improper fraction?An improper fraction is a fraction where the numerator is greater than or equal to the denominator. For example, 3/2 is an improper fraction, but 2/3 is a proper fraction, whose denominator is greater than the numerator.
Given here: The fraction 33/23 which is roughly equivalent to 1.43
We know, To convert a decimal to a fraction, place the decimal number over its place value. For example, in 0.6, the six is in the tenths place, so we place 6 over 10 to create the equivalent fraction, 6/10. If needed, simplify the fraction. And To convert a fraction to a decimal, we'll just divide the numerator...by the denominator.
Thus 1.43=33/23
Hence, The answer is 1.43
Learn more about fractions here:
https://brainly.com/question/29264210
#SPJ2
What is the length of the hypotenuse?
Answer:
15 feet
Step-by-step explanation:
please help and describe and correct the error in finding a solution of the equation in two variables! i will mark you brainliest !!!!
Answer:
see below
Step-by-step explanation:
The student put 5 in for y and 1 in for x. It should be x=5 and y =1
y = 3x+2
1 = 3*5 +2
1 = 15+2
1 = 17
This is not true so this is not a solution
Answer:
see below
Step-by-step explanation:
The student put 5 in for y and 1 in for x. It should be x=5 and y =1
y = 3x+2
1 = 3*5 +2
1 = 15+2
1 = 17
This is not true so this is not a solution
What is the value of x in the figure?
A. 40
B. 70
C. 80
D. 120
E. 150
Answer:
E) 150°
Step-by-step explanation:
angle adjacent to 70° angle is 110°
the angle supplemental to 'x' must be 180-(40+110) or 30°
this means 'x' must be 150°
Select all of the expressions that are equivalent to 3(4x + 5y).
Answer:
3*4x+3*5y
12x+15y
2*3x*2+2*7.5y
please help!! I'm stuck on this
Answer:
D
Step-by-step explanation:
According to the volume formula, you multiply length x width x height
Answer:
D; 1*9*4
Step-by-step explanation:
Since the formula for the volume of a rectangular prisim is L*W*H (length times width times height), it would be 9*4*1. However, since the order doesn't matter (due to the commutative property of multiplication) it would be D.
Find the indicated length for the pair of similar figures. X 14 3 21
Answer:
x=2
Step-by-step explanation:
To get from the left figure to the right figure on the bottom we multiply by 7
3*7 =21
To go from the right figure to the left we divide by 7
14/7 = 2
x would equal 2
At a customer service call center for a large company, the number of calls received per hour is normally distributed with a mean of 130 calls and a standard deviation of 10 calls. What is the probability that during a given hour of the day there will be less than 129 calls, to the nearest thousandth?
Answer:
0.460
Step-by-step explanation:
We solve using z score formula
z = (x-μ)/σ, where
x is the raw score = 129 calls
μ is the population mean = 130 calls
σ is the population standard deviation = 10 calls
Hence:
Z score = x - μ/σ
=129 - 130/10
=-0.1
Probability value from Z-Table:
For x less than 129 calls = x < 129
P(x<129) = 0.46017
Approximately to the nearest thousandth = 0.460
Therefore, the probability that during a given hour of the day there will be less than 129 calls, to the nearest thousandths is 0.460
13. Jack has to make at least $140 per week mowing lawns. He makes $20 per lawn. At least
how many lawns does he need to mow?
Answer:
7
Step-by-step explanation:
you divide 140 by 20 & it gives you 7 i hope this helps ..
which one is it? please help
HELP ILL GIVE BRAINLIEST
Answer:
1
Step-by-step explanation:
m= y/x =5/5= 1
__________
hey! i’ll give brainliest please help
Answer:
The last one looks correct
Step-by-step explanation:
Because if they have stronger winds then that would improve their flight making them get use to it, and will for sure get stronger over time
Find the multiplicative inverse of -1 x -2/5
Answer:
Step-by-step explanation:
For the multiplicative inverse of a real number, divide 1 by the number. For example, the reciprocal of 5 is one fifth (1/5 or 0.2), and the reciprocal of 0.25 is 1 divided by 0.25, or 4.
For more help visit:
https://byjus.com/maths/multiplicative-inverse/
Please hurry i need help and im stuck!!! helpsosososos
Answer:
2
Step-by-step explanation:
the x and y are being multiplied by 2 e.g. 1 × 2 is 2 and 2 × 2 is 4 so the constant is 2
Answer:
2
Step-by-step explanation:
y2-y1 4-2 2
-------- = --------- = ---------- = 2
x2-x1 2-1 1
Solve for X. Round to the nearest tenth.
Answer:
Step-by-step explanation:
take 18 degree as reference angle
using cos rule
cos 18=adjacent/hypotenuse
0.95=20/x
x=20/0.95
x=21.05
x=21.2
help me plzz i give you a barinlist
Answer:
The missing point is (3, -6)
Step-by-step explanation:
Please answer question :) need help
Answer:
C. 1/3
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightStep-by-step explanation:
Step 1: Define
Identify
a = 2/3
b = 3/4
c = 1/2
a(b - c²)
Step 2: Evaluate
Substitute in variables: 2/3[3/4 - (1/2)²][Brackets] Exponents: 2/3(3/4 - 1/4)(Parenthesis) Subtract: 2/3(1/2)Multiply: 1/3Answer:
C. 1/3
Step-by-step explanation:
Replace each letter with their corresponding value and simplify using the order of operations:
a(b - c*c)
turns into:
[tex]\frac{2}{3} (\frac{3}{4}-(\frac{1}{2}*\frac{1}{2}))[/tex]
You want to remember that order of operations follows the rules of PEMDAS. The operations within the parentheses come first.
1/2 times 1/2 = 1/4
Now we have:
[tex]\frac{2}{3}(\frac{3}{4}-\frac{1}{4})[/tex]
Then 3/4 - 1/4 = 2/4 = 1/2
[tex]\frac{2}{3}(\frac{1}{2})[/tex] = 1/3
Therefore your answer is C. 1/3
the denominator of a rational number is greater then it's numerator is increased by 11 and the denominator is decreased by 1, the new number becomes 7/3. find the rational number.
Answer:
7/3
7 is increased by 11 so you decrease it by 11
7-11= -4
3 is decreased by 1 so you increase it by 1
3+1= 4
-4/4