A student thinks that the regular pentagon in the diagram
has 10 lines of symmetry. Explain the student's error.
Answers
Answer:
A
Step-by-step explanation:
The student must have thought that every single arrowhead is a line of symmetry, so since there are 10 arrowheads, there must be 10 lines of symmetry. This is incorrect because if you look closely at the diagram, each line has 2 arrowheads, so the student is overcounting by a factor of 2. They should have just counted the number of lines, not arrowheads. Therefore, there must be 10/2 = 5 lines of symmetry, not 10. Hope this helps!
Related Questions
Line L is shown in the coordinate plane. a. What are the coordinates of points and ? b. Is the point (16,20) on line L ? Explain how you know. c. Is the point (20,24) on line L? Explain how you know. d. Is the point (80,100) on line L? Explain how you know. e. Write a rule that would allow you to test whether (, ) is on line L.
Answers
Answer:
so its will be the equal number
Step-by-step explanation:
pls dont get mad if I'm wrong I tried :)
Please Simplify 5(x - 6)
Answers
Final Answer: [tex]5x - 30[/tex]
Steps/Reasons:
Question: Simplify [tex]5(x - 6)[/tex]
Step 1: Expand by distributing the terms.
[tex]5x + 5[/tex] × [tex]-6[/tex]
Step 2: Simplify [tex]5[/tex] × [tex]-6[/tex] to [tex]-30[/tex].
[tex]5x - 30[/tex]
~I hope I helped you :)~
Our equation looks like:
[tex]5(x-6)[/tex]
This means that we will need to distribute. This means that we need to multiply everything inside the parenthesis by the number outside of the parenthesis. (Note: you only distribute when variables are involved.)
[tex](5 \cdot x)-(5 \cdot 6)[/tex]
Simplify:
[tex]5x-30[/tex]
We cannot simplify any further, so we know that our equation, until we know what x equals, is [tex]5x - 30[/tex].
Which description of a figure and it’s image match the transformation described by (x,y) (x, 3y)
Answers
Answer: the figure and it’s image are similar and the image has been translated 3 units up.
Step-by-step explanation:
Which equation can be used to represent the distance D for the times t given in the table?
Answers
Answer: D
Step-by-step explanation:
Simplify 5c(3c^2)^3.
Answers
Answer:
5c(3c2)3
=135c7
Step-by-step explanation:
Answer:
135c ^3 i just took the test
Step-by-step explanation:
Cuanto es 17 entre un medio
Answers
Answer: 8.5
Step-by-step explanation:
espanol- deberia ser 8.5
english- it should be 8.5 good luck!
If the scale factor of Figure A to Figure B is
3:8, find the value of x
Answers
We have been given that two figures. The scale factor of Figure A to Figure B is 3:8. We are asked to find the value of x.
We will use proportions to solve our given problem.
Figure A/Figure B=3/8
Upon substituting the ratio between Figure A and Figure B, we will get:
3/8=×/24
3/8•24=×/24•24
3/1•3=×
9=×
Therefore, the value of x is 9.
The point-slope form of the equation of the line that passes through (-4,-3) and (12, 1) is y-1=1/4(x-12). What is
the standard form of the equation for this line?
x - 4y = 8
O x - 4y=2
4% - y = 8
O 49 - y = 2
Answers
Answer:
The answer is: x-4y=8
32 + -3 • 4 – (–5) =
Answers
Answer:
The correct answer would be 25
Step-by-step explanation:
32+(−3)(4)−(−5)
=32+−12−(−5)
=20−(−5)
=25
Hope this helps have an amazing day!!
Answer:
121
Step-by-step explanation:
32+(-3)×4-(-5)
29×4-(-5)
116-(-5)
116+(+5)
121
Find the missing length of the similar figures.
Find the distance between Riverside and Milton if they are 12 cm apart on a map with a scale of 4 cm : 21 km.
Answers
Answer:
63 km
Step-by-step explanation:
divide 12 by 4 =3
multiply 3 by 21 which is 63.
Kayla can write 415 pages in 10 minutes. At this rate, how many pages could Kayla write in 30 minutes?
Answers
Answer:
1245
Step-by-step explanation:
You have to multiply 415 and 3, since 10 x 3 = 30
415 x 3 = 1245
Answer:
She can write 1245 pages in 30 mins.
Step-by-step explanation:
If 10*3= 30 then multiply 415 by 3 or add 415 3 times and you will get your answer. Hope this helped you!! Give brainliest.
what is eqivalent to 1/11
Answers
Answer:
it may be different answers i.e 0.09 and 11^-1
Sharon correctly answered 21 out of 24 questions on a math quiz. Which is this ratio as a decimal?
0.625
0.667
0.840
0.875
pls help♡
Answers
Answer:
0.875
Step-by-step explanation:
To find the decimal, you divide the 21 by the 24.
21/24 = 0.875
pls pls someone answer thissss asap...also I’d like the steps on how to do it as well pls and ty!!!
Answers
Answer:
v>19/6
Step-by-step explanation:
Sarah bought a television that cost $805.She plans to make equal payments of $38 each month until the television is paid in full. About how many payments will Sarah make
Answers
Answer:
Step-by-step explanation:
805/38= 21 7/38
So that is 21 full payments of $38.00 and one of $7.00
What is h(p)=(p3+4p2-2) in distributive property
Answers
h
p
=
p
3
+
4
p
2
−
2
Step 1: Divide both sides by p.
h
p
p
=
p
3
+
4
p
2
−
2
p
h
=
p
3
+
4
p
2
−
2
p
Answer:
h
=
p
3
+
4
p
2
−
2
p
Hamburger buns come in packages of 12. Hamburger patties come in packages of 8. Bob would like to buy the smallest number of hamburger buns and hamburger patties so that he will exactly one hamburger patty per bun. How many packages of hamburger buns and hamburger patties must he buy?
PLEASE ANSWER QUICK I WILL GIVE LOTS OF POINTS
Answers
Answer:
Neil would buy 4 packages of hamburger patties and 5 packages of hamburger buns. He could make 20 burgers.
Step-by-step explanation:
An ammonia and water mixture fills a five-gallon container. Eighty percent of the mixture is ammonia, but some of the mixture will be drained and replaced with pure water. If a five-gallon mixture of fifty percent ammonia is desired, how many quarts of the mixture need to be drained before the water is added, given that 4 quarts equals a gallon
Answers
Answer:
The volume of the 80% ammonia that is to be drained before water is added is 7.5 quartz
Step-by-step explanation:
The volume of the ammonia and water mixture = 5 gallons
The percentage of ammonia in the mixture = 80%
The volume of ammonia desired = 5 gallons
The percentage concentration of ammonia desired = 50%
The diluting solution = Pure water
The measure of 4 quarts = 1 gallon
Therefore, we have, by equivalence solutions;
80% × x gallon = 50% × 5 gallons
x gallon = 50% × 5 gallons/(80%) = 3.125 gallons
x = 3.125 gallons
The volume of the 80% ammonia that is to be drained = 5 gallons - 3.125 gallons = 1.875 gallons
4 quarts = 1 gallon
1 gallon = 4 quarts
∴ 1.875 gallons = 4 × 1.875 quartz = 7.5 quartz
The volume of the 80% ammonia that is to be drained before water is added = 7.5 quartz
Answer:
7.5
Step-by-step explanation:
Owen made exactly 72% of his free throws during the first half of the basketball season, and he made six free throws during the second half of the season. For the entire season he made exactly 60% of his free throws. What is the fewest possible number of free throws Owen could have attempted during the second half of the season?
Answers
Answer:
The fewest possible number of free throws Owen attempted is 15 throws
Step-by-step explanation:
From the first half,
72% = 72/100 = 18/25, reduced to its simplest ratio.
It means that he made at least 18 free throws in the first half of the season.
From the second half,
Let x be the fewest possible outcome of free throws, and the sum of total is 60% = 60/100 = 0.6
Considering the 6 free throws during the second half of the season,
(18+6)/(25+x) = 0.6
24/(25+x) = 0.6
Solving for x,
24 = 0.6(25+x)
24 = 15+0.6x
24-15 = 0.6x
9 = 0.6x
x = 9/0.6 = 15
x = 15 free throws
The fewest possible number of free throws Owen attempted is 15 throws
Which expression is equivalent to (8x – 20) + (-4x + 12)?
A. 12x + 8
B. 4x – 8
C. – 4x – 8
D. – 4x
Answers
Answer:
B. 4x-8
Step-by-step explanation:
helppppppppppppp pleaseeeee
Answers
Answer:
30 percent
Step-by-step explanation:
What is the area of the figure
A 234 in
B 315 in
C 225 in
D 252 in
Answers
Determine the constant of variation for the direct variation given. Type a numerical answer in the space provided.
Answers
Answer:
B. 4
Step-by-step explanation:
Determine the constant of variation for the direct variation given.
(0, 0), (3, 12), (9, 36)
A. 3
B. 4
C.12
Direct variation is given by:
y = kx
Where,
k = constant of variation
(3, 12)
x = 3; y = 12
y = kx
12 = k*3
12 = 3k
k = 12 / 3
k = 4
(9, 36)
x = 9; y = 36
y = kx
36 = k * 9
36 = 9k
k = 36 / 9
= 4
k = 4
Constant of the variation = 4
is anyone single and want to date me and my Question is what is 1234567 * 1234567
Answers
Step-by-step explanation:
-_-
Paula needed grounded beef to make lasagna for dinner. The ground beef cost $2.09 per pound at Vidalia Market. Write an equation to help Paula determine the total amount, y, she will pay for a given number of pounds of ground beef, x?
A. x = 2.09y
B. 2.09 = y/x
C. y = 2.09x
D. y = x/2.09
Answers
Answer:
C
Step-by-step explanation:
2.09x=y
eq C
Hope this helps plz hit the crown :D
Answer:
I think that it is C. y = 2.09x
Step-by-step explanation:
Hope this helped have an amazing day!
Please help 20 points and brainliest
Which of the following groups of numbers is in order from least to greatest?
0.54, 7/10, 40%
3/4, 0.8, 94%
67%,1/2 , 0.8
7/10, 0.54, 67%
Answers
Answer: the last second one: 3/4 0.8 94%
Step-by-step explanation:
because 3/4 is smaller than one so it has to go first.
hope it helps :) pls give brainliest
3/4, 0.8, 94%
DO IT HES RIGHT
Together, teammates Pedro and Ricky got 2687 base hits last season. Pedro had 281 more hits than Ricky. How many hits did each player have?
Answers
Ricky had 1203 hits Pedro had 1484
Antônio, que é dono de uma queijaria artesanal, estava colocando todos os queijos produzidos, num determinado dia em prateleiras destinadas a maturação. Ao organizá-los nessas prateleiras, percebeu que apenas a metade deles caberia. Assim, os queijos que não couberam nas prateleiras foram destinados a quatro caixas de maturação. Ao colocar nove queijos em cada caixa. sobraram ainda cinco queijos, que foram distribuídos entre seus familiares. Quantos queijos foram produzidos por Antônio nesse dia?
Answers
Answer:
82 cheesesStep-by-step explanation:
Antônio, who owns an artisanal cheese shop, was placing all the cheese produced on a given day on shelves destined for ripening. When organizing them on these shelves, he realized that only half of them would fit. Thus, cheeses that did not fit on the shelves were destined for four ripening boxes. By placing nine cheeses in each box. there were still five cheeses left, which were distributed among their families. How many cheeses were produced by Antônio that day?--------------------
Placed in boxes and distributed number:
5 + 4*9 = 41Add the other half on shelves:
41 + 41 = 82Factor completely. there is and a and b so two questions
Answers
Answer:
A. 4(x - 1)^2
B. (a+4b)^2
HELLP NOW I NEED ANSWER AND WORK/EXPLANATION!(Emily’s car broke down the weekend before she started a new job. She borrowed $880 from her parents, at an annual interest rate of 3%, to quickly pay for the car repairs. If Emily paid her parents a total of $893.20 in six months, how much simple interest did she pay?
Answers
Answer:
13.20 or 1.5%.
Step-by-step explanation:
Since Emily borrowed 880, you need to subtract 893.20 from 880. That equals 13.20. The percentage of interest is 1.5 because 6 months is half of a year and the annual interest rate is 3 percent.