Answers
Answer:
140 degrees
Step-by-step explanation:
The formula of the hint is the sum of the angles in a nonagon (9 sided polygon). If we divide the sum of the angles in a nonagon by nine we should be able to get the angle of each nonagon.
(9-2) * 180 = 7 * 180 = 1260
1260/9 = 140 degrees
Related Questions
please help me !!!!!!!!!!
Answers
[tex]y = - x - 1[/tex]
[tex]y = - 5x - 13[/tex]
Multiply the lower equation by -1:[tex]y = - x - 1[/tex]
[tex] - y = 5x + 13[/tex]
Add the systems:[tex]0 = 4x + 12[/tex]
[tex]4x = - 12[/tex]
[tex]x = \frac{ - 12}{4} = - 3[/tex]
Substitute x=3 in any equation:
[tex]y = - x - 1[/tex]
[tex]y = - ( - 3) - 1[/tex]
[tex]y = 3 - 1 = 2[/tex]
SoLuTiOn PaiR:( -3 , 2 )The figure shows a person estimating the height of a tree by looking at the top of the tree with a mirrow. Assuming that both the person and the tree form right angles with the ground, which of the following proportions can be use to estimate the height of the tree
Answers
A student usually saves $20 a month. He would like to reach a goal of saving $350 in 12 months. The student writes the equation 350 = 12(x+20) to represent this situation. Solve the equation for x.
Write your answer as a sentence that describes what the variable x represents.
Enter your answers and your work or explanation in the box provided.
Answers
Answer:
The student would need to save $9.17 more per month
Step-by-step explanation:
350 = 12(x+20)
350 = 12x + 240
12x = 110
x = 110/12
x = $9.17
Mrs. Nigrini picks up some grapefruits that each weigh 1/2 pound. When she checks out she finds her bag of grapefruit weighs exactly 6.5 pounds. Each grapefruit costs $1.29. How much did she spend on grapefruit?
Answers
Answer:
$16.77
Step-by-step explanation:
1. Grapefruit cost 1/2 pound = 0.5 pound
2. Since the bag weighs 6.5 pounds, you can do 6.5/0.5 to find the number of grapefruits
3. 6.5/0.5 = 13
4. The total cost of the grapefruits would be $1.29 * 13 = $16.77
Look at this set of 9 numbers:
30
59
44
58
30
69
89
30
44
By how much would the mode increase if the number 80 were added to the set?
Answers
Answer:
The mode would not increase or decrease.
Step-by-step explanation:
I say this because the mode is the value(s) in the data set that occur most frequently. 30 is the mode before adding 80 because 30 is in the set 3 times, more than the other values. Because 80 would be the only 80 in the set it would not become the mode once added. I hope this explained my reasoning and helped!
What value of y makes the number sentence shown true?
y−3=15
Answers
Answer:
18
Step-by-step explanation:
y-3=15
+3 +3
if you add 3 to the other side, you would get:
y=18
y-3=15+3=18
—- ——-
Y=-3+3 cancels each other out. And gives you y alone but REMEMBER WHAT YOU DO TO ONE SIDE YOU HAVE TO DO ON THE OTHER.
That is why you see that -3 becomes + 3 when moved to get y=18
Hope you are his helps her understand more letters are the same way Good Luck
if angle 6 is 25 degrees how much is 7
Answers
Given:
Angle 6 = 25 degrees
To Find:
The value of Angle 7
Solution:
We know that,
the value of Angle 6 is equal to 25 Degrees
Since Angle 6 and Angle 7 together comprise of a Straight Line, this means that they are Supplementary Angles.
Therefore,
Angle 6 + Angle 7 = 180 degrees
This implies that,
25 degrees + Angle 7 = 180 degrees. (since Angle 6 = 25 Degrees)
Angle 7 = (180-25) degrees
Thus ,
Angle 7 = 155 degrees
Hence, Angle 7 is 155 degrees (Option 1)
Can anyone help me with this one to
Answers
For example
5^-4 = 1/(5^4)
Now
1/(5^-4) = 1/(1/(5^4)) =
1 * (5^4)/1. Because when you dividing a fraction, you multiple it and switch order.
=
5^4
Find the slant height?
35
43
45
47
Answers
Answer:
45
Step-by-step explanation:
Slant height = √(altitude)² - (1/2 base)²
Sh = √53² - 28²Sh = √2809 - 784Sh = √2025Sh = 45Apologies as my previous response was incorrect.
What is the domain of the function graphed below?
A. {x | x = -1,2,4}
B. {x | x=-2,-1,2,4}
C. {x | x=2}
D. {x | x=-2,4}
= is not equal to sign
Answers
Answer:
{x | x ≠ -1, 2, 4}
Step-by-step explanation:
Domain: input values (x-values)
Asymptote: a line which the curve gets infinitely close to, but never touches.
Hole: a point on the graph where the function is not defined.
From inspection of the graph:
Vertical asymptotes at x = -1 and x = 4Hole at x = 2As vertical asymptotes and holes restrict the domain of a rational function, the domain is {x | x ≠ -1, 2, 4}
Lamont designs a survey of town residents in an attempt to predict who will be elected mayor. he chooses his sample of 500 people from the town’s 40,000 residents by asking his question to every person leaving the public library on a saturday. which suggestion would most improve lamont’s random sample? lamont should sample only adults. lamont should sample only registered voters. lamont should decrease the sample size. lamont should ask every fifth person.
Answers
Lamont should sample only registered voters to predict who will be elected mayor
What is a survey?A survey is a research method used for collecting data from a predefined group of respondents to gain information and insights into various topics
Since Lamont is trying to predict who will be elected, surveying people that are not registered to vote will not give him an accurate prediction. If someone is not registered to vote, they cannot vote for any candidate.
To get more accurate results, Lamont should only sample people that are registered voters.
To know more about the survey follow
https://brainly.com/question/25257437
Answer:
b
Step-by-step explanation:
edge test
What type of number is -0.12?
Choose all answers that apply:
A
Whole number
B
Integer
С
Rational
D
Irrational
Answers
Answer c rational since it stops.
Not irrational since does keep going.
When the population mean and standard deviation are known, what distribution is used for the analysis of the sample?.
Answers
When the population mean and standard deviation are known, you use the standard normal distribution
How to determine the distribution?There are several probability distributions; these include
Normal distributionPoisson distributionChi square distributionBinomial distributionEtcOf all these distribution, only the standard normal distribution can be used when the population mean and standard deviation are known,
Note that it is also referred to as the z-distribution
Read more about probability distributions at:
https://brainly.com/question/24756209
The height of a cuboid is 5 cm and its length is 2cm more than the breadth. If its volume is 240cm, find its length and breadth.
Answers
Answer:
Final answer -
[tex]length = 6 \: cm \\ breadth = 6 + 2 = 8 \: cm[/tex]
hope helpful :D
Select the graph that represents h = -16t^2+ 80.
Answers
Answer:
Attach the graph options so i can help...
Step-by-step explanation:
What is the western most state in the United States?
°Hawaii
°Florida
°Wisconsin
°Texas
Answers
Hawaii
hope it helps...!!!
Find the perimeter of this semi-circle with radius, r = 42cm. Give your answer as an expression in terms of π .
Answers
Answer:
C≈263.89 cm
Step-by-step explanation:
Which of the following reveals the minimum value for the equation 3x2 + 18x + 15 = 0?
can u give me a step by step
Answers
Answer:
Step-by-step explanation:
I have no idea
Answer:
3(x+3)^2=12
Step-by-step explanation:
3x^2-18x+15
(3x^2+18x)+15
3(x^2+6x)+15
3(x^2+6x+9)+15-27
3(x+3)^2-12
3(x+3)^2=12
Hope this helps!
Please mark as brainliest! Thanks!
73 in.
55 in.
b
What is the length of the missing leg? If necessary, round to the nearest tenth.
b =
inches
Answers
Answer:
48 (rounded to 10).....
A group of friends were working on a student film. They spent all their budget on
equipment and props. They spent $369 on equipment, and 55% of the total budget on
props. What was the total budget for their student film?
Answers
Answer:
$820
Step-by-step explanation:
Total = Equipment + Props
T = 369 + 0.55T
0.45T = 369
T = 820
I hope this helps!
5. 4. Ms. Le has a bag of marbles. The table below shows the amount she drew of each marble. Color Amount Blue 8 Red 10 Yellow 9 Green 6 Purple 7 Based on these results, what is the probability that Ms. Le will choose a yellow or purple marble? A 2/5 B 1/16 C 1/8 D 4/5
Answers
Answer:
A, 2/5
Step-by-step explanation:
8 + 10 + 9 + 6 + 7 = 40
9 + 7 = 16
16/40
divide both sides by 8 (common factor)
2/5
if x cubed = -8, what does x equal
Answers
Let's start the sum as follows:
x³ = 8
X × X × X = 8
This means there are 3 number which after Multiplication gives answer 8.
If 2 is multtiplied 3 times it will give you 8
Thus the answer of x is 2
x = 2.
x^3 = -8
The cube root of 8 is 2 = 2 x 2 x 2 is 8.
But, the answer is negative, which means that the cube root of -8 must be -2.
-2 x -2 x -2 = -8
x = -2
Hope this helps!
Show how to find m<1 using the inverse cos of <1.
Answers
[tex]\text{We know that,}\\\\\cos \theta = \dfrac{\text{Base}}{\text{Hypotenuse}}\\\\\\\text{For}~ \angle1,\\\\~~~~~~\cos \angle 1 = \dfrac bc\\\\\\\implies \cos \angle 1 = \dfrac 35\\\\\\\implies \angle 1 = \cos^{-1} \left( \dfrac 35 \right)\\\\\\\implies \angle 1 = 53.13^{\circ}\\\\\\\text{For} ~ \angle 2,\\\\~~~~~~~\cos \angle 2 = \dfrac ac\\\\\\[/tex]
[tex]\implies \cos \angle 2 = \dfrac 45\\\\\\\implies \angle 2 =\cos^{-1} \left( \dfrac 45 \right)\\ \\\\\implies \angle 2 = 36.86^{\circ}[/tex]
[tex]\text{Hence,}~~ m\angle 1 = 53.13^{\circ}~~ \text{and}~~ m\angle 2 =36.86^{\circ}.[/tex]
Consider f(x) = bx. which statement(s) are true for 0 < b < 1? check all that apply. the domain is all real numbers. the domain is x > 0. the range is all real numbers. the range is y > 0. the graph has x-intercept 1. the graph has a y-intercept of 1. the function is always increasing. the function is always decreasing.
Answers
The true statement for f(x)=b^x is the function is always decreasing function.
We have given,
f(x)=b^x where 0<b<1
What is the domain?Domain is all possible values of x for which any function is defined
We can select any values of x for which function
It will be defined for all real x
So, the domain is [tex](-\infty,\infty)[/tex]
The range is all possible values of y for which x is defined
we are given that b is positive
The value of the function will always be positive
So, the range is [tex](0,\infty)[/tex]
y>0
The x-intercept:
Set f(x)=0 and then we can solve for x
f(x)=b^x=0
x is undefined
The x-intercept does not exist
Increasing or decreasing:
Since, 0<b<1
The b is a positive value less than 1
As we increase the value of, [tex]b^x[/tex] will keep decreasing
This is decreasing function
To learn more about the function visit:
https://brainly.com/question/25638609
Use the triangle to answer the question.
ul
diagram not drawn to scale
4
What is the length of the side labeled x?
Ο Α. V11
OB. V21
Oc 11. D.21
Answers
The length of the side labeled x is Option B. [tex]\sqrt{21}[/tex].
Pythagorean theorem.Pythagorean theorem is a basic principle to be applied when determining the unknown side of a given right triangle when the values of two sides are given. The theorem states that;
/Hyp/^2 = /Adj/^2 + /Opp/^2
From the triangle given, we have;
/Hyp/^2 = /Adj/^2 + /Opp/^2
x^2 = 4^2 + ((5)^1/2)^2
= 16 + 5
= 21
x = 21^1/2
= [tex]\sqrt{21}[/tex]
The length of the side labeled x is [tex]\sqrt{21}[/tex]. Option B.
Learn more about Pythagorean theorem at https://brainly.com/question/16176867
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The figure shows a line graph and two shaded triangles that are similar: A line is shown on a coordinate grid. The x axis values are from negative 15 to positive 15 in increments of 3 for each grid line. The y axis values are from negative 5 to positive 5 in increments of 1 for each grid line. The line passes through the ordered pairs negative 12, negative 4, and 0, 0, and 12, 4. A shaded right triangle is formed so that its hypotenuse is from ordered pair 0, 0 labeled O to negative 6, negative 2 labeled A, one leg is from 0, 0 to 0, negative 2, and the second leg is from 0, negative 2 to negative 6, negative 2. Another shaded right triangle is formed with the hypotenuse from negative 6, negative 2 to negative 9, negative 3 labeled B, one leg is from negative 6, negative 2 to negative 6, negative 3, and the second leg is from negative 9, negative 3 to negative 6, negative 3. Which statement about the slope of the line is true? It is 3 throughout the line. It is fraction 1 over 3 throughout the line. The slope from point O to point A is fraction 1 over 3 time the slope of the line from point A to point B. The slope from point O to point A is three times the slope of the line from point A to point B.
Answers
hope this helps
The figure below shows a line graph and two shaded triangles that are similar:
A line is shown on a coordinate grid. The x axis values are from negative 20 to positive 20 in increments of 4 for each grid line. The y axis values are from negative 5 to positive 5 in increments of 1 for each grid line. The line passes through the ordered pairs negative 16, 4, and 0, 0, and 16, negative 4. A shaded right triangle is formed so that its hypotenuse is from ordered pair 0, 0 labeled as O to negative 8, 2 labeled as A, one leg is from 0, 0 to negative 8, 0, and the second leg is from negative 8, 0 to negative 8, 2. Another shaded right triangle is formed with the hypotenuse from negative 8, 2 to negative 12, 3 labeled as B, one leg is from negative 8, 2 to negative 12, 2, and the second leg is from negative 12, 2 to negative 12, 3.
Which statement about the slope of the line is true?
The slope from point O to point A is fraction 1 over 4 times the slope of the line from point A to point B.
The slope from point O to point A is 4 times the slope of the line from point A to point B.
It is fraction negative 1 over 4 throughout the line.
It is −4 throughout the line
Step-by-step explanation:
not my answer found it on a different page but it should help.
there are 20 students in mr.clarks fourth grade class there are 5 times as as many students in the entire fourth grade class as there are in mr.clacks. which equation can be used to determine the number of students,n, in the entire fourth grade?
Answers
Answer:
there are 20 students in mr.clarks fourth grade class there are 5 times as as many students in the entire fourth grade class as there are in mr.clacks. which equation can be used to determine the number of students,n, in the entire fourth grade?
n= 20(5)
100 kids in the fourth grade
or
there are 140 kids in the 4 th grade
Step-by-step explanation:
the equation is n=20(5)
because 20(5) is the same as 20×5 so that 8s the equation
Write your answer as a fraction or as a whole or mixed number.
Answers
Answer:
9 days
Step-by-step explanation:
because if you turn 7 ⅞ into 63/8 then do 63÷7 you get 9
Answer:
9 days.
write 7/8x9, and put a 1 under it.
7x9=63
8x1=8
63/8 simplified is 7 7/8
Step-by-step explanation:
The anwser is down below
Answers
Answer:
B) 2/9
Step-by-step explanation:
2 + 3 + 5 = 10 marbles altogether
One blue is taken out, so it's now 2 and 9 (10-1).
who ever gets right 100 points.... HELP ASAP
Answers
Answer:
3rd Table
Explanation:
1st and 2nd option does not relate time taken or speed together while jogging and walking. They are irrelevant thus they cancels out.3rd option relates time taken and speed together in a arranged way. It is easy to understand and find the distance covered.4th option seems confusing as there is no numerical digit in the table. We cannot find miles covered from this given information.