Suppose that 40% of households use their cell phones for their home phone. If 12 households are randomly selected, what is the probability that at least three use their cell phones

Answer:

no they arent

Step-by-step explanation:

Answer:

no

Step-by-step explanation:

10/12 can be simplified as 5/6 however 20/32 turns to 10/16 which then can be simplified to 5/8

Answer:

y = 15x

Step-by-step explanation:

If take the values of x and y you can see the equation

y=15x

Answer:

We conclude that:

f(a) + 5 = a² + 8a - 5

Step-by-step explanation:

Given

The function is given by

f(x) = x²+8x-10

To determine

f(a)+5

In order to determine f(a)+5, first, we need to determine f(a).

Now substitute x = a in the function f(x) = x²+8x-10

f(a) = (a)² + 8(a) - 10

f(a) = a² + 8a - 10

Thus,

f(a) + 5 = (a² + 8a - 10) + 5

f(a) + 5 = a² + 8a - 5

Therefore, we conclude that:

f(a) + 5 = a² + 8a - 5

Answer:

[tex]y = 4x - 12[/tex]

Step-by-step explanation:

The equation of a line has the following format:

[tex]y = mx + b[/tex]

In which m is the slope and b is the y-intercept(value of x when y = 0).

In this question:

Slope 4, which means that [tex]m = 4[/tex].

So

[tex]y = 4x + b[/tex]

Contains point (1,-8).

This means that when [tex]x = 1, y = -8[/tex]. We replace this into the equation to find b. So

[tex]y = 4x + b[/tex]

[tex]-8 = 4(1) + b[/tex]

[tex]b = -12[/tex]

So

[tex]y = 4x - 12[/tex]

Answer:

y = 98

Step-by-step explanation:

y=21x−7

Let x=5

y = 21*5 -7

y =105-7

y =98

Step-by-step explanation:

-11 ≥ h/13

multiply both sides of the inequality by 13.

-143≥ h

Answer:

The area of the circle is 8cm^2

Step-by-step explanation:

Answer:

3.14

Step-by-step explanation:

The area of the circle: pi times radius squared soo

radius 2cm divided by 2 equals 1 cm so pi times radius squared 3.14 × 1 squared so ur answer is 3.14

Answer:

-8, -4, 2

Step-by-step explanation:

-8, -4, 2

Answer:

-8, -6, -4, -2, 0, 2, 4

Step-by-step explanation:

The numbers are increasing/decreasing by 2.

Answer:

x - -8 :)))

hope that helps

Answer

Step-by-step explanation:

Answer:

The answer is below

Step-by-step explanation:

Trigonometric functions are functions used in right angled triangles to relate an angle in the triangle to the ratio of two side. The most common trigonometric functions are the sine, the cosine, and the tangent.

Some trigonometric identities are:

secθ = 1/ cosθ, cosecθ = 1 / sinθ, tanθ = sinθ / cosθ, cotθ = 1 / tanθ = cosθ / sinθ.

Hence simplifying the question:

[tex]\frac{sin\theta}{cos\theta tan\theta} =\frac{sin\theta}{cos\theta *\frac{sin\theta}{cos\theta} }\\\\=\frac{sin\theta}{sin\theta}\\\\=1[/tex]

Answer:

The two quantitative elements of process variation are:

a. common cause and special cause.

Step-by-step explanation:

When a process fails to follow the prescribed process pattern, with reduced productivity, higher costs, longer lead times, and late deliveries, a process variation has occurred.  Thus, process variation is a leading cause of quality issues.  There are common cause variation, which is inherent in the system itself, and special cause variation, which is caused by external factors outside of the system.  Process variations can be reduced by reducing the common and special cause variations, among other steps.

Answer:

66

Step-by-step explanation:

55x(20/100)=11

55+11=66

Answer:

y = 9

Step-by-step explanation:

-2y + 6 = -12

       -6     -6

-2y = -18

divide both sides by -2

y = 9

Hope this Helps!!!

Answer: y = -3

Step-by-step explanation:

Answer:

The total purchase price is $370.97.

Step-by-step explanation:

Given;

price of the 35-mm camera, =  $259.99

price of the wide-angle lens = $89.99

TAX rate = 6% = 0.06

The total purchase price = 0.06($259.99 + $89.99) + ($259.99 + $89.99)

The total purchase price = $20.99 + 349.98

The total purchase price = $370.97

Therefore, the total purchase price is $370.97.

Answer:

X = 3 - 3 * 2 x - 1 -

Step-by-step explanation:

Answer:

sounds like it stayed at 50 percent dawg

Answer:

Infinitely many solutions

Step-by-step explanation:

These equations are the same. The only difference being one is written in fractions and the other is in decimals. Since they are the same, they will have infinitely many solutions.

Answer: 4 pieces

Step-by-step explanation: you just have to divided 5.2 to 1.3 and you will get 4 pieces :).

Answer:

Mean    μ = 5.75

Standard deviation  σ = 2.1041

Step-by-step explanation:

Step(i):-

Given that the size of the sample 'n' = 25

Given proportion p= 23% = 0.23

Let 'X' be the random variable in a binomial distribution

Mean    μ = np = 25 × 0.23 = 5.75

Step(ii):-

Standard deviation

          σ = √npq

         σ = [tex]\sqrt{25 X 0.23 X0.77}[/tex]

        σ = 2.1041

Answer:

[tex]P(X=2) = 0.1047[/tex]

Step-by-step explanation:

Represent the probability of hitting the target with H.

So:

[tex]H = \frac{1}{8}[/tex]

Represent the probability of not hitting the target with T.

So:

[tex]T = 1 - H[/tex]

[tex]T =1 - \frac{1}{8}[/tex]

[tex]T =\frac{7}{8}[/tex]

Required

Probability of exactly 2 hits in 5 tries

This probability is a binomial probability and will be calculated using:

[tex]P(X=x) = ^nC_x H^xT^{n-x}[/tex]

In this case:

[tex]x = 2[/tex] i.e 2 hits

[tex]n = 5[/tex] i.e. 5 attempts

So, we have:

[tex]P(X=2) = ^5C_2 H^2T^{5-2}[/tex]

[tex]P(X=2) = ^5C_2 H^2T^3[/tex]

Apply combination formula:

[tex]P(X=2) = \frac{5!}{(5-2)!2!} H^2T^3[/tex]

[tex]P(X=2) = \frac{5!}{3!2!} H^2T^3[/tex]

[tex]P(X=2) = \frac{5*4*3!}{3!2*1} H^2T^3[/tex]

[tex]P(X=2) = \frac{5*4}{2} H^2T^3[/tex]

[tex]P(X=2) = 10* H^2T^3[/tex]

Substitute values for H and T

[tex]P(X=2) = 10* (\frac{1}{8})^2(\frac{7}{8})^3[/tex]

[tex]P(X=2) = 10* \frac{1}{64}*\frac{343}{512}[/tex]

[tex]P(X=2) = \frac{3430}{32768}[/tex]

[tex]P(X=2) = 0.1047[/tex]

Hence, the probability of 2 hits in 5 tries is 0.1047

Answer:

I believe the answer is -39+13x

Step-by-step explanation:

Answer: what is the question

Step-by-step explanation:

Answer:

3.2w+3.6

Step-by-step explanation:

(−1.2)(−3)+(−1.2)(−w)+2w

=3.6+1.2w+2w

Combine Like Terms:

=3.6+1.2w+2w

=(1.2w+2w)+(3.6)

=3.2w+3.6

HOPE IT HELPED GOOD LUCK

Answer:

it will be d

Step-by-step explanation:

Answer:

f(x)=11x+12

Step-by-step explanation:

it shows that the intercept is around halfway between 0 and 20, and the plots are not exactly at the 10s marks, if you look- June is supposed to be 6, but it’s closer to 66. since 6*11=66, i’d say 11x+12 is the answer.