All categories

3 years ago

A student thinks that the regular pentagon in the diagram

Mathematics

1 answer:

Nadya [2.5K]3 years ago

4 0

Answer:

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

What is the domain of g?

sattari [20]

Answer:

{ x | -7 ≤ x ≤ 4 }

Step-by-step explanation:

8 0

3 years ago

Rateeee me lolllllllzz

Elena-2011 [213]

Answer:

Bro your so fing pretty

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

The graph of a quadratic function contains the points

masya89 [10]

Answer:

Shawn is correct.

Step-by-step explanation:

Let the quadratic function is g(x) = a(x - h)² + k

Here (h, k) is the vertex of the parabola.

Since this parabola passes through (0, 0), (1, 9) and (-1, 9), axis of symmetry is x = 0 and the vertex is (0, 0).

Therefore, equation of the parabola will be,

g(x) = a(x - 0)²+ 0

g(x) = ax²

for a point (1, 9) which lies on the graph,

9 = a(1)²

a = 9

g(x) = 9x² (here a > 1)

Therefore, f(x) is vertically stretched by a factor of 9 to form g(x).

Shawn is correct.

3 0

3 years ago

What if the snake was 15 inches it makes a circle 5 times how many inches is each circle

lianna [129]

The snake is 75 in hope this helps

6 0

3 years ago

Read 2 more answers

Keely scored 128 points, which was 4 times as many points as Grayson scored. Which equation can be used to find the number of po

Ludmilka [50]

Answer:

Step-by-step explanation:

take 128 divide by 4

4 0

3 years ago