Help plz I just need the answer

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:

Bottom right corner answer

So a slope of 1/4 means that for every 4 steps you take forward, you would go up 1.

With this, beginning at the point (6,3), lets take 4 steps back and go down 1. This is instead of going forward, as that value would be outside of your graph We would end up at (2,2). By using these two points, you can graph your line.

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:

V is proportional

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

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:

options C -x^2/3z

Step-by-step explanation:

this is the correct answer after we cancelled them

Answer:

C

Step-by-step explanation:

This requires you to know the law of quotient for exponents. For this I recommend separating everything with the same variable into its own fraction to make it easier so you have (-2x^4/6x^2), (y^2/y^2), (z/z^2). Then to simplify you divide the coefficients and signs like normal but for the exponents, you subtract the exponent of the numerator from the denominator. This gives

(-x^2 / 3), (1), and ( 1/z), which you can multiple together to get c.

Hope this helps. Ask if you need me to clarify something.

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:

Niamh gets 8 and Jack gets 20

Step-by-step explanation:

Answer:

Niamh gets 8 and Jack gets 20!

Answer:

104 degrees

Step-by-step explanation:

The whole shape will come to 360 degrees, so if you add 126 degrees and 26 degrees it will come to 152 degrees. You then subtract 152 degrees fro. 360 degrees, this will give you 208 degrees. Then you divide 208 degrees by 2 that results in 104 degrees. So 104 degrees is the answer.

Answer:

(4, 11) is one ordered pair  and (-4, 27) is the other ordered pair

Step-by-step explanation:

(1)  f(x) = x^2 - 2x + 3             (2)    f(x) = -2x + 19

-2x + 19 = x^2 - 2x + 3

x^2 - 16 = 0

(x - 4)(x + 4) = 0

x = 4   or    x = -4                                  -2(4) + 19 = 11

                                                             -2(-4) + 19 = 27

So, when x = 4, y = 11                   and when x = -4, y = 27

(4, 11) is one ordered pair              and (-4, 27) is the other ordered pair

Answer:

Step-by-step explanation:

Answer:

50.24cm2

Step-by-step explanation:

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

Answer:

C would be your answer. If im not mmistaken but im 99% sure

Step-by-step explanation:

Analyze the table below and complete the instructions that follow.

Sports

Drama

Comedy

Total

Male

8

2

5

15

Female

3

6

6

15

Total

11

8

11

30

A survey asked 30 people what their favorite genre of television broadcasting was, and the results were tabulated above. Find the probability that a male chosen at random watches drama.

Answer:

87.9

Step-by-step explanation:

I searched it up

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:

78x98 7644

34x65 2210

45x65 2925

23x65 1495

11x98 1078

1029x75674 77868546

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: 4PCL3 -> P4 + 6CL2

Step-by-step explanation:

Answer:

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

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:

unlike

Step-by-step explanation:

Answer:

D. 30 Ft.

Step-by-step explanation:

Split the trapezoid into two shapes for an easier process .

The ideal split shall result in two shapes: A rectangle and a right triangle .

Rectangle Formula: L · W = A

Substitution: 6 · 4 = 24 Ft.

Right Triangle Formula: ( B · H )  ÷ 2 = A

Substitution: ( 3 · 4 ) ÷ 2 = 6 Ft.

Add the separate areas together to get the final result .

24 + 6 = 30 Ft.

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]

Answer:

Cubic Inches

Step-by-step explanation:

I hope this helps you.

Answer:

B Is the answer

Step-by-step explanation:

I think

Answer:

w = 20 feet

Step-by-step explanation:

V = lwh

600 = 5(6)w

600 = 30w

w = 20