1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Helga [31]
3 years ago
13

A student thinks that the regular pentagon in the diagram

Mathematics
1 answer:
Nadya [2.5K]3 years ago
4 0

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!

You might be interested in
At a certain store, the taco sauce was on sale for 1/5 off. With a coupon for an additional 40 cents off, the final cost of the
Karo-lina-s [1.5K]
B) c - 1/5c - 40 = 120


c- (original cost) - 1/5c (sale) - 40(coupon)= 120(final cost)

Hope that helps! :)
7 0
3 years ago
-3 3/7 * 2 1/2 Has o be in simplest form!
OverLord2011 [107]

Answer:

-8.57142857143

Step-by-step explanation:

-8.57142857143

6 0
3 years ago
Read 2 more answers
-1/2 divided by _____= -7/3 please fill in the blank
Ierofanga [76]
Multiply -1/2 by -7/3 to get the answer

8 0
4 years ago
Find an equation of the line that contains the given point and is perpendicular to the given line. Using a graphing calculator t
Orlov [11]

The equation of the line is y=2x+1.

We must must transform the standard form equation 3x+6y=5 into a slope-intercept form equation (y=mx+b) to find its slope.

3x+6y=5 (Subtract 3x on both sides.)

6y=−3x+5 (Divide both sides by 6.)

y=− 3/6x+ 5/6

​y=− 1/2x+ 5/6

​The slope of our first line is equal to − 1/2.Perpendicular lines have negative reciprocal slopes, so if the slope of one is x, the slope of the other is − 1/x

​The negative reciprocal of − 1/2 is equal to 2, therefore 2 is the slope of our line.

Since the equation of line passing through the point (1,3), therefore substitute the given point in the equation y=2x+b:

3=(2×1)+b

3=2+b

b=3−2=1

Substitute this value for b in the equation y=2x+b:

y=2x+1

Hence, the equation of the line is y=2x+1.

For more information about equation of line, visit

brainly.com/question/18831322

#SPJ9

6 0
1 year ago
If AB is parallel to CD and the slope of CD is -5 what is the slope of AB
lubasha [3.4K]
The slope of AB is also -5. This is because parallel lines have equal slopes. 
5 0
3 years ago
Read 2 more answers
Other questions:
  • Rearrange the formula P = 2(l + b) to solve for b.
    9·2 answers
  • What’s the answer to this?
    10·1 answer
  • Write a word phrase that can be represented by b-6
    11·1 answer
  • A scientist is studying wildlife . She estimates the population of bats in her state to be 270,000 . She predicts the population
    11·1 answer
  • Wade wants to buy sweaters. He has $175 and each sweater coast $12.00. Write and solve an inequality to find how many sweaters h
    10·1 answer
  • Simplify the expression <br> - 1/8 -2/7 <br> pls help :)
    11·1 answer
  • If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11?
    10·1 answer
  • Define a variable and write an equation for each real-world problem. 1] Matt spent $ 6.50 on his lunch. This is $2.25 more than
    13·1 answer
  • Please I need help ASAP!!!!!!!
    5·1 answer
  • (−1)^3⋅(−1)^2<br> simplify
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!