Please help and add explanation

Answer:

50.24cm2

Step-by-step explanation:

pi=3.14 so a=3.14x4square which equals 50.24cm2

Answer: your answer is B 3/4

Step-by-step explanation:

Hope this helps you! Have a great day! ^v^

Answer:

Step-by-step explanation:

Answer:

80 degrees

Step-by-step explanation:

180 - 20 = 160. 160 / 2 = 80. They're both the same lines so they should have the same angles.

Answer:-9

1

Distribute

x

(

4

x

−

1

)

+

9

(

4

x

−

1

)

=

0

x(4x−1)+9(4x−1)=0



2

Distribute

4

x

2

−

x

+

9

(

4

x

−

1

)

=

0

4x

2

−x+9(4x−1)=0



3

Distribute

4

x

2

−

x

+

36

x

−

9

=

0

4x

2

−x+36x−9=0



4

Combine like terms

4

x

2

+

35

x

−

9

=

0

4x

2

+35x−9=0



5

Use the quadratic formula

x

=

−

35

±

35

2

−

4

⋅

4

(

−

9

)

2

⋅

4

x=

2⋅4

−35±

35

2

−4⋅4(−9)

​

​



6

Simplify

x

=

−

35

±

37

8

x=

8

−35±37

​



7

Separate the equations

x

=

−

35

+

37

8

x

=

−

35

−

37

8

x=

8

−35+37

​

x=

8

−35−37

​



8

Solve

x

=

1

4

x

=

−

9

x=

4

1

​

x=−9

Answer:

2.6

Step-by-step explanation:

Given :

x 1 2 3 4

P(x) 0.3 0.2 ? 0.4

Σp(x) = 1

Hence, 0.3 + 0.2 +? + 0.4 = 1

0.9 +? = 1

? = 1 - 0.9

? = 0.1

For the mean :

E(X) = ΣX*P(X)

(1 * 0.3) + (2 * 0.2) + (3 *0.1) + (4* 0.4)

0.3 + 0.4 + 0.3 + 1.6 = 2.6

Hence, the mean = 2.6

Answer:

w = 20 feet

Step-by-step explanation:

V = lwh

600 = 5(6)w

600 = 30w

w = 20

Answer:

848 is the answer

The volume of the cone is approximately 282.74 cubic centimeters.

It is a shape of a Christmas tree where there is a base of radius r and a top point called the apex.

We have,

The formula for the volume of a cone is V = (1/3)πr²h,

where r is the radius of the base and h is the height of the cone.

Substituting the given values.V = (1/3)π(9 cm)²(10 cm)

V = (1/3)π(81 cm²)(10 cm)

V = (1/3)π(810 cm³)

V = (270/3)π cm³

V = 90π cm³

V ≈ 282.74 cm³ (rounded to the nearest tenth)

Therefore,

The volume of the cone is approximately 282.74 cubic centimeters.

Learn more about cones here:

https://brainly.com/question/13798146

#SPJ3

Answer:

1 is B 2 is D 3 is A 4 is A 5 is C 6 is A

Answer: 23349 in^3

Step-by-step explanation:

Answer:

Did you mean 4c-12=8? If so, the value of c is 5.

Step-by-step explanation:

Answer:

 4c-12=8 the value of c is 5.

Step-by-step explanation:

Answer:

(b)

[tex]V_2 = \frac{\pi}{4} [ \frac{(2r)^2h}{3}][/tex] or [tex]V_2 = \frac{1}{3}\pi r^2h[/tex]

Step-by-step explanation:

Given

[tex]Ratio = \frac{\pi}{4}[/tex]

See attachment for complete question

Required

Determine the volume of the cone

The volume of a square pyramid is:

[tex]V = \frac{a^2h}{3}[/tex]

Where

a = base dimension

From the attachment, the base dimension of the square pyramid is 2r.

So:

[tex]a = 2r[/tex]

The volume becomes;

[tex]V = \frac{(2r)^2h}{3}[/tex]

To calculate the volume of the cone, we simply multiply the given ratio and the volume of the prism.

So, we have:

[tex]V_2 = Ratio * V[/tex]

[tex]V_2 = \frac{\pi}{4} [ \frac{(2r)^2h}{3}][/tex]

[tex]V_2 = \frac{\pi}{4} * \frac{(2r)^2h}{3}[/tex]

Open bracket;

[tex]V_2 = \frac{\pi}{4} * \frac{4r^2h}{3}[/tex]

Cancel out 4

[tex]V_2 = \pi * \frac{r^2h}{3}[/tex]

The above can be written as:

[tex]V_2 = \frac{1}{3} * \pi r^2h[/tex]

[tex]V_2 = \frac{1}{3}\pi r^2h[/tex]

So, we have:

[tex]V_2 = \frac{\pi}{4} [ \frac{(2r)^2h}{3}][/tex]

or

[tex]V_2 = \frac{1}{3}\pi r^2h[/tex]

Answer:

likely

Step-by-step explanation:

100% is certain, likely is around 75%, equally is around 50%, and unlikely is around 25%

[tex]\boxed{\large{\bold{\textbf{\textsf{{\color{gold}{Answer \red{:)}}}}}}}}[/tex]

Chesley McNeil, local meteorologist, said there is a 75% chance of rain today. The probability of rain is

The probability of rain is 3/4

Answer:

h = 1.65 m

Step-by-step explanation:

Me parece que el problema está mal formulado por lo siguiente:

El angulo al que se refiere el problema es 54°  o es 50°  o es 54°,50´

Como resolver el problema en cualquier caso.

Si Elisa y su sombra forman un angulo recto, entonces Elisa, su sombra y la distancia entre la cabeza de Eliza y el final de su sombra forman un triangulo rectangulo. Para el cual entonces solo es necesario buscar la tangente del angulo ( cateto opuesto sobre cateto adyacente) como conocemos el cateto adyacente ( la sombra de Elisa ) calculamos la altura de Elisa (h).

Asumamos que el angulo es de 54°  entonces

tang 54° = 1.3763

tang 54° = 1.3763  = h/1.2

h = 1,3763*1,2  m

h = 1.65 m

De igual manera se procedería si el angulo es de 50° ( en este caso la    tang 50° = 1.1917

Answer:

Step-by-step explanation:

the number of bowls was 6 times the number of plates.

b = 6p

He made 90 bowls during the week.

90 = 6p

p = 15

He made 15 plates during the week.

Answer:

unlike

Step-by-step explanation:

Answer:

[tex]6000(cm)^{3} [/tex]

Step-by-step explanation:

[tex]30 \times 10 \times 20[/tex]

[tex]300 \times 20[/tex]

[tex]6000(cm)^{3} [/tex]

Answer:

2/5 = 40% 16/25 = 64% 9/25 = 36% 21/50 = 42%

Step-by-step explanation:

2 divided by 5 is .40. to make it a percentage move the decimal to the right two times. the same with the rest of the questions. numerator diveded by denominator, then move the decimal to the right 2 times. good luck hope i helped!

Answer:

78x98 7644

34x65 2210

45x65 2925

23x65 1495

11x98 1078

1029x75674 77868546

Answer:

[tex]C = 2\pi r[/tex]

[tex]C = \pi d[/tex]

Step-by-step explanation:

Given

A circular ring

Required

The length

Let

[tex]r \to[/tex] the radius of the ring

The length is calculated by calculating the circumference of the ring.

This is calculated using:

[tex]C = 2\pi r[/tex]

or

[tex]C = \pi d[/tex]

Where

[tex]d \to[/tex] diameter

and [tex]d = 2r[/tex]

Answer:

30.8

Step-by-step explanation: round bozo

Answer:

249.9

Step-by-step explanation:

Area of the shaded region is 223.72 square units.

Step-by-step explanation:

Area of the shaded region = Area of parallelogram - Area of triangle

Area of the parallelogram = base x height

= 23.8 x 15

= 357 square feet

Area of triangle = \frac{1}{2}

2

1

x base x height

Let the height of the triangle be represented by h, applying the Pythagoras theorem;

23.8^{2}23.8

2

= 21^{2}21

2

+ h^{2}h

2

566.44 = 441 + h^{2}h2

h^{2}h

2= 125.44

h = \sqrt{125.44}

125.44

= 11.2

h = 11.2

Area of the triangle = \frac{1}{2}

21 x 23.8 x 11.2 = 133.28

Area of shaded region = 357 - 133.28

= 223.72

Area of the shaded region is 223.72 square units.

Answer:

B Is the answer

Step-by-step explanation:

I think

Answer:

Niamh gets 8 and Jack gets 20

Step-by-step explanation:

Answer:

Niamh gets 8 and Jack gets 20!

Answer:

The answer is 3.95

Step-by-step explanation:

0×.5 + 5×.2 + 8×.15 + 10×.1 + 15×.05 = ?

0 + 1 + 1.2 + 1 + .75 = 3.95

Answer:

V is proportional

Step-by-step explanation:proportion rule for b is x:4y

Answer:

B

Step-by-step explanation:

Draw a line from the top of the 3 m line to the 10 m line so that the new line meets the the 10 meter line at right angles. The part you are interested in should be 4 meters long.

Top rectangle.

Area = L * W

L = 7  (10 - 3 = 7)

W = 4

Area = 4* 7 =                                       28

Bottom rectangle

Area = L * W

L = 12

W = 3

Area = 12 * 3                                      36

Total Area                                          64

Answer:

680 miles

Step-by-step explanation:

Multiply the mph by the total hours to get your answer

40 × 17 = 680

Have a great day! :)

Answer:

680 Miles

Step-by-step explanation: Miles per hour  times Hours

40 times 17

Answer:

[tex]3x + 4y = 6 - - - (a) \\ 2x + 3y = 3 - - - (b) \\ 2 \times (a) - 3 \times (b) : \\ = > 0x - y = 3 \\ y = - 3 \\ 2x - 9 = 3 \\ 2x = 12 \\ x = 6 \\ { \boxed{x = 6}} \\ { \boxed{y = - 3}}[/tex]