Help me with pre algebra worth 50 points

Answer:

Step-by-step explanation:

The formula for finding the sum of the measure of the interior angles is (n - 2) * 180. To find the measure of one interior angle, we take that formula and divide by the number of sides n: (n - 2) * 180 / n.

Answer:

64 c^2

Step-by-step explanation:

If the base is 8c and the height is 8c

A = bh

   = (8c) * (8c)

    = 84 c^2

Answer:

15/36

Step-by-step explanation:

Answer:

-2 = [tex]\frac{m}{16}[/tex] or [tex]\frac{m}{16}[/tex] = -2

Step-by-step explanation:

Answer:

B.

Step-by-step explanation:

They have correctly plotted the table.

(Two players have shoe size 9 and two have shoe size 8 1/2)

Answer: Thx, Listen to some JuiceWRLD

Step-by-step explanation:

Answer:

x = 2, y = 4

Step-by-step explanation:

Given

(x + 1, 8 ) = (3, 2y )

Equate the values in the x and y positions , that is

x + 1 = 3 ( subtract 1 from both sides )

x = 2

and

2y = 8 ( divide both sides by 2 )

y = 4

Answer:

(X+1,8)=(3,2y)

equating corresponding value we get

x+1=3

x=3-1=2

again

8=2y

y=8/2=4

x=2

y=4

Answer:

positive linear relationship

Step-by-step explanation:

as the temp goes up, air conditioing will go up!

hope this helps! xoxo raina

Answer:

20 - x = 35 - 2x

Step-by-step explanation:

Answer:

35-2x=y

Step-by-step explanation:

Step-by-step explanation:

[tex] \cos( < B) = \frac{5}{9} \\ < B = \cos {}^{ - 1} ( \frac{5}{9} ) \\ < B = 56.25 \degree[/tex]

Answer: haha

Step-by-step explanation:

Answer:

y=1/6x-2

Step-by-step explanation:

Parralel lines have the same slope.

Since the slope of the parralel equation has to be 1/6, and the point is (12,0)

then you input 12 for x and get 2.  But you need to get 0 for y, so the intercept would be negative 2.

Answer:

71 times

Step-by-step explanation:

Diameter of BMX bike= 0.45m

Radius= 0.225m

Cirumference of BMX bike

C= 2πr

C=2*3.142*0.225

C= 1.4139m

In a 400-m race, the BMX bike will turn

=400/1.4139

=282.9 times

=283 times

Diameter of  Mountain bike= 0.6m

Radius= 0.3m

Circumference of Mountain bike

C= 2πr

C=2*3.142*0.3

C=1.8852m

In a 400-m race, the Mountain bike will turn

=400/1.8852

=212.17 times

=212 times

Hence the difference is

=283 -212

=71 times

Answer:

flip it again

Step-by-step explanation:

then i will answer it

Answer:

I think the answer is 12,4

So 12 on the x axis and 4 on the y axis

Answer:

I think it's A, y = 1/2 cos(x + π/4)

Answer:

Anne made a mistake when she multiplied all the left side equation with 6

Step-by-step explanation:

6(2x)-3 = 22x+32

Distribute 6 only to the term within the parenthesis

12x - 3 = 22x + 32

Collect like terms

12x-22x = 32+3

-10x = 32+3

-10x = 35

divide both sides of equation by -10

x = -3.5

Answer:

5.00 + 0.25p

Step-by-step explanation:

Well I can't be for sure but I know for a fact its not set IV it's not possible to make a triangle out of all right angles. Set II, well, that isn't right either. You can't make a triangle out of all obtuse angles. Like the right angle one, its not possible you can only use one obtuse or right angle in a triangle other wise it's not going to be a triangle. I'd say go try Set III since that would most likely make an equilateral triangle.

Answer:

y = -5x +5

Step-by-step explanation:

slope = (15 - -5)/(-2 - 2) = 20/-4 = -5

y int = 5

Answer:

9. 7.85 in

10. 4 in

Step-by-step explanation:

9. 2×3.14×1.25=7.85

10. 12.56/2×3.14=2×2=4

Step-by-step explanation:

f(x) = -x + 1

---------------

Answer:

- 11

Step-by-step explanation:

- 8 - 5 + 2

- 13 + 2

- 11

Answer:

i think its -11

Step-by-step explanation:

creo que es -11

Answer:

2(3x+,1)+2x=8x+1

=6x+2+2x=8x+1

=8x+2=8x+1

=2-1=8x-8x

=1=x

So x=1

Answer:

it should be x=-1 since 0= -1

Step-by-step explanation:

2(3x+1)+2x=8x+1

6x+2+2x=8x+1

8x+2=8x+1

8x+2-2=8x+1-2

8x=8x-1

8x-8x=8x-1-8x

0= -1

lets take

x+y=100 firstly.

then x=100-y equation (i)

Now,

x-y=10

Putting value of x from equation(i)

100-y-y=10

-2y=10-100

-2y=-90

therefore, y=45

Now,

putting value of y in equation(i)

we get

x=100-45

ie x=55

hence, x=55 & y=45

Answer:

The solution is (55, 45).

Step-by-step explanation:

Solve the system of linear equations

x + y = 100

x - y = 10

through elimination by addition / subtraction.

Combining these two equations temporarily eliminates y, leaving us with 2x = 110.  Then x = 55.

Substituting 55 for x in the first equation, we get:

55 + y = 100.  Subtracting 55 from both sides leaves us with y = 45.

The solution is (55, 45).

Answer:

43

Step-by-step explanation:

Vertically opposite angles.

Here,

b=43 (being vertically opposite angles )

Answer:

1) scalene 2) Isosceles 3) Equilateral 4) Scalene

Step-by-step explanation:

1. no sides are the same length

2. two sides are the same length

3. all sides are the same length

4. no sides are the same length

Answer: Hello Luv........

1) scalene 2) Isosceles 3) Equilateral 4) Scalene

Step-by-step explanation: Sorry i copied other.

1. no sides are the same length.

2. two sides are the same length.

3. all sides are the same length.

4. no sides are the same length.

Mark me brainest please. Hope this helps. Anna ♥

Answer:

r = 11 units

Step-by-step explanation:

Given that,

The measure of Arc CD is 11x

The arc is making an angle of 180°.

We know that,

Length of the arc, [tex]l=r\theta[/tex]

Where

r is the radius of the circle

So,

[tex]r=\dfrac{l}{\theta}\\\\r=\dfrac{ 11\pi}{\pi}\\\\r=11[/tex]

So, the radius of the circle is equal to 11 units.

Answer:

m∠D=110°

Step-by-step explanation:

∠D+∠C=180°

∠D+70=180°

∠D=180-70

∠D=110°

[tex]----------[/tex]

hope it helps...

have a great day!!