Solve x2 = 121. 60.5 −11 11 ±11

Which statements are true about the reflections symmetry of a regular heptagon?

lakkis [162]

Answer:

some statements that are true are :

Step-by-step explanation:

it has only 1 line of reflectional symmetry.

a line of symmetry will connect 2 vertices.

a line of symmetry will connect a vertex and a midpoint of an opposite side.

it has 7 fold symmetry.

a line of symmetry will connect the midpoints of 2 opposite sides.

3 0

3 years ago

Explain the Error: Jayme tells her friend that ordered pairs that have an x-coordinate of O lie on the x-axis. She uses the orig

Paul [167]

Answer:

Gcvmjedbgkje2m

Step-by-step explanation:

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4 0

3 years ago

Lila knows that 316 means “3 divided by 16.” She uses this to find the decimal equivalent for 316. Enter a digit into each box t

jeka57 [31]

He first took six pieces for himself and then evenly divide… Get the answers you need, ... Log in to add comment. swebster1495 is ... Lila knows that 316 means “3 divided by 16.” She uses this to find the decimal equivalent for 316. Enter a digit into each box to continue her work. All the ratios lie on line .

6 0

3 years ago

Hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

SSSSS [86.1K]

Answer:

Center (4, -13)

Radius = 17

Step-by-step explanation:

Circle equation: $( x - h )^2 + ( y - k )^2 = r^2$

(h, k) is the center of the circle and the r is the radius.

$(x-4)^{2} +(y+13)^{2} = 289$

h = 4, k = -13, r = 17

3 0

3 years ago

What’s the equation in vertex form?

pshichka [43]

Answer:

$\large\boxed{y=(x+5)^2-64}$

Step-by-step explanation:

$\text{The vertex form of equation}\ y=ax^2+bx+c:\\\\y=a(x-h)^2+k\\\\h=\dfrac{-b}{2a},\ k=f(h)\\\\\text{We have the equation:}\ y=x^2+10x-39\to x=1,\ b=10,\ c=-39.\\\\\text{Substitute:}\\\\h=\dfrac{-10}{2(1)}=\dfrac{-10}{2}=-5\\\\k=f(-5)=(-5)^2+10(-5)-39=25-50-39=-64\\\\\text{Finally:}\\\\y=1(x-(-5))^2-64=(x+5)^2-64$

8 0

3 years ago