area of plane and composite figures

Answer:

32,768 ways

Step-by-step explanation:

True/ false questions = 5 ; number of options = 2 (True or false)

Ways of answering = 2^5 = (2 * 2 * 2 * 2 * 2) = 32

Number of Multiple choice questions = 5

Number of options (A - D) = 4 options

Ways of answering = 4^5 = (4 * 4 * 4 * 4 * 4) = 1024

32 * 1024 = 32,768 ways

Answer:

If the 21 cm is circumference, the answer would be 35.09.

If the 21 cm is radius, the answer would be 1385.44.

If the 21 cm is diameter, the answer would be 346.36.

Answer:

hope it helps you......

Answer:

1)X+4=2x-17+10

X. =2x-7-4

11=X

DF=11+4

=15

2)FH~

11x+71=12x+32

12x-11x =71-32

X=39

FH=(11×39)+71+(12×39)+32

=1000

3)57+39+8x-12=180

8x+84-84=180-84

8x=96

X=12

4)11x+2=68

11x=66

X=6

5)114+X+37+X=139

2x+151. -151=139-151

X=-6

Answer:

1. x=11

2. x=39

3. x= 12

4. x=6

5. x=-6

Step-by-step explanation:

1. x+4= 10+2x-17

FG=GH

x+4=2x-7

11=x

2. 11x+71=12x+32

subtract from both sides

39=x

3. All angles of a triangle add to 180.

39+57+(8x-12)=180

96+(8x-12)=180

8x-12=84

8x=72

divide both sides by 8

x=9

4. Vertical angles are equal

68=11x+2

66=11x

divide

6=x

5. (114+x)+(37+x)=139

Add like terms

151+2x=139

subtract

2x=-12

x=-6

Answer:

500,000

250,000

125000

62,500

31,250

15,625

Equation : 1000000 / n^2

Step-by-step explanation:

Keep on dividing by 2

Answer:

Year one is 500,000

Year two is 250,000

Year three is 125,000

Year four 62,500

Year five 31,250

year six 15,625 <---  he has that much money left

Step-by-step explanation:

Divide  

Answer:

pOinTS lOlK

Step-by-step explanation:

Answer:

Sum of complementary angles is 90

90-25=65°

Step-by-step explanation:

Answer:

The factors of 24 are 1, 2, 3, 4, 6, 8, 12 and 24.

Step-by-step explanation:

Hope this helps

Answer:

Step-by-step explanation:

x/16=1/2

x=16/2

x=8

(the 30,60,90 triangle always have sides of proportional lengths 1, 3^(1/2), and 2)

Answer:

I think it's between +1 and +2

Step-by-step explanation:

Please follow me on brainy

Answer:

Step-by-step explanation:

basically, you have to look at the inequality. it is the same all around. so if the inequality has less than or equal too, or greater than or equal too, you need to have a thick solid line representing your function. if it is just less than or greater than, use a dotted line. to determine whether the shading goes above or below, you look at the in equality. greater than is above, and less than is below

Answer: y+2x=15

Step-by-step explanation:

Given

Two points A and B are (4,7) and (6,3) respectively

Using two-point form

[tex]\Rightarrow \dfrac{y-y_1}{x-x_1}=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

Putting values

[tex]\Rightarrow \dfrac{y-7}{x-4}=\dfrac{3-7}{6-4}\\\\\Rightarrow \dfrac{y-7}{x-4}=\dfrac{-4}{2}=-2\\\\\Rightarrow y-7=-2x+8\\\\\Rightarrow y+2x=15[/tex]

Answer:

Number of marbles with Williams at the starting = 192

Step-by-step explanation:

Let total number of marbles with Williams = m

He lost marbles = 25% of the total number

                           = [tex]\frac{25}{100}\times m[/tex]

                           = [tex]\frac{m}{4}[/tex]

Remaining marbles with Williams = m - [tex]\frac{m}{4}[/tex]

                                                        = [tex]\frac{3m}{4}[/tex]

He gave marbles to his brother = [tex]\frac{1}{6}[/tex]th of the remaining marbles

                                                    = [tex]\frac{1}{6}\times \frac{3m}{4}[/tex]

                                                    = [tex]\frac{m}{8}[/tex]

Remaining marbles after giving marbles to his brother = 120

Therefore, [tex]\frac{3m}{4}-\frac{m}{8}=120[/tex]

[tex]\frac{6m}{8}-\frac{m}{8}=120[/tex]

[tex]\frac{5m}{8}=120[/tex]

m = [tex]\frac{120\times 8}{5}[/tex]

m = 192

Number of marbles with Williams at the starting = 192

Answer:

D. -3 for every 1 to the right, in goes down 3.

E. 0, the graph could represent no change over time.

F.

assume the point on the graph is the origin, you can graph these

(2,-4)

(1,-2)

(0,0)

(-1,2)

(-2,4)

(-3,6)

Step-by-step explanation:

Answer:

i dont undstand what you mean

Step-by-step explanation:

Answer:

The picture is just a black screen. Please tell me the question in the comments and I will try to help!

Step-by-step explanation:

Answer:

Step-by-step explanation:

Fig 1

<f=180-2×30=180-60=120

<D and <E are base angle of isosceles triangle.

Fig 2

AB=AC=BC=8

All the side of equilateral are equal and all interior angle also equal.

Answer:

Step-by-step explanation:

a) ΔFED is isosceles triangle. EF = ED

∠F = ∠D =x   {Angles opposite to equal sides are equal}

∠F + ∠E + ∠D = 180  {Angle sum property }

x  +x + 30 = 180

  2x + 30  = 180

           2x = 180 -30

           2x = 150

             x = 150/2

             x = 75

∠F = 75

b) All the angles are equal. So, it is an equilateral triangle. In equilateral triangle all sides are equal.

So, AB = 8

Answer:

4. 120 cm^2

5. 8x+30

Step-by-step explanation:

Answer:

120 cm^2

8x+30

Step-by-step explanation:

Answer:

63.4 ft²

Step-by-step explanation:

11²(π) /6 = 63.4 ft²

Answer:

5, 7.5, 10

Step-by-step explanation:

Answer:

a = b*4/7

a-b/b

=4b/7 -b /b

=(4b-7b)/7 /b

=-3b/7 / b

cancelling b,

= -3/7

Answer:

480-500 sile

Step-by-step explanation:

please lety me get points

seniors are lucky becoz its last year

Simplifying

2(4x + -6) = 8x + -12

Reorder the terms:

2(-6 + 4x) = 8x + -12

(-6 * 2 + 4x * 2) = 8x + -12

(-12 + 8x) = 8x + -12

Reorder the terms:

-12 + 8x = -12 + 8x

Add '12' to each side of the equation.

-12 + 12 + 8x = -12 + 12 + 8x

Combine like terms: -12 + 12 = 0

0 + 8x = -12 + 12 + 8x

8x = -12 + 12 + 8x

Combine like terms: -12 + 12 = 0

8x = 0 + 8x

8x = 8x

Add '-8x' to each side of the equation.

8x + -8x = 8x + -8x

Combine like terms: 8x + -8x = 0

0 = 8x + -8x

Combine like terms: 8x + -8x = 0

0 = 0

Solving

0 = 0

Answer:

X = 1

Step-by-step explanation:

2(4x - 6) = 8x - 12

(8x - 12) = 8x - 12

    + 12          + 12

8x         =   8x

x         =        1

Answer:

$52.324

Step-by-step explanation:

Answer:

C!

Step-by-step explanation:

Answer:

YStep-by-step explanation:

Answer:

0.0970

Step-by-step explanation:

Red marbles, R= 5

White, W = 9

Blue, B = 7

Total = (5 + 9 + 7) = 21

Selecting 3 marbles without replacement :

Probability that all marbles are the same

P(RRR) or P(BBB) or P(WWW)

(5/21 * 4/20 * 3/19) + (7/21 * 6/20 * 5/19) + (9/21 * 8/20 * 7/19)

0.0075187 + 0.0263157 + 0.0631578

= 0.0969922

= 0.0970