What is the value of -2/5 divided by 6/8 PLEASE HELPPP

Answer:

125 degrees.

Step-by-step explanation:

L is the midpoint of NK so the arcs NM and Mk are equal.

So MK = 55 degrees and the arcs JN and JK are equal

Therefore  

JK =

(360 - 2*55)/2

= (360 - 110) / 2

= 250 /2

= 125 degrees.

The probability of selecting no more than 2 defectives in a sample of 10  a) without replacement is 0.36077 and b) with replacement is 0.14093

a)

Here it is given that the objects are selected without replacement one after the other and the box contains only 20 items

Here we can see that the no. of items i.e the population is finite and the items are selected one after another without replacement.

Hence, this is a case of Hyper-Geometric distribution.

For a Hyper-Geometric distribution

P(X = x) = \(\frac{^{k}C_x X ^{N-k}C_N-x }{^{N}C_n }\)

where,

N = The Population

n = no. of samples selected

k = no. of success.

Here

k = no. of defectives present

= 20% of 20

= 20/100 X 20

= 4

n = 10

N = 20

x = 2

P(X ≤ 2) = P(X = 0) + P(X = 1) + P(X = 0)

Therefore we get

⁴C₀ X ⁽²⁰ ⁻ ⁴⁾C₍₁₀ ₋ ₀₎ / ²⁰C₁₀     +     ⁴C₁ X ⁽²⁰ ⁻ ⁴⁾C₍₁₀ ₋ ₁₎ / ²⁰C₁₀  +

⁴C₂ X ⁽²⁰ ⁻ ⁴⁾C₍₁₀ ₋ ₂₎ / ²⁰C₁₀

= ⁴C₀ X ¹⁶C₁₀ / ²⁰C₁₀      +     ⁴C₁ X ¹⁶C₉ / ²⁰C₁₀     +     ⁴C₂ X ¹⁶C₈ / ²⁰C₁₀

ᵇCₐ = b!/(b - a)! X a!

Therefore,

⁴C₀ X ¹⁶C₁₀ / ²⁰C₁₀      +     ⁴C₁ X ¹⁶C₉ / ²⁰C₁₀     +     ⁴C₂ X ¹⁶C₈ / ²⁰C₁₀

= 0.04334 + 0.24768 + 0.06975

= 0.36077

b)

Here the sample is selected with replacement

There are 4 defective and 16 non-defective items

Let A be the event of selecting not more than 2 defectives with replacement

According to the problem, 2 out of 4 defectives are selected while the rest are not defective.

Hence n(A) =  n(getting 0 defective) + n(getting 1 defective) + n_getting 2 defectives)

= 16¹⁰    +    4 X 16⁹   +     4² X 16⁸

= 1443109011456

Similarly, the total no. of ways to choose an item is

n = 20¹⁰

Probability of any event

= no.of favorable outcomes/total no. of outcomes

Hence, P(A) = n(A) / n

= 4² X 16⁸ / 20¹⁰

= 0.14093

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Answer:

f = 3

g = -1

h = 6

r = 18

Step-by-step explanation:

Box 1

f(x) = \(2x^{4}\)-\(12x^{3}\)+\(16x^{2}\)+4x+15 with x = 3

f(3) = \(2(3^{4)}\) - \(12(3^{3} )\) + \(16(3^{2})\)+ 4(3) + 15

Reorder

Evaluate

Multiply

3f = 2 x 81 - 12 + 27 +16 x 9 + 12 +15

3f = 162 - 324 + 144 + 12 + 15

3f =  9

3  ÷  3

f = 3

Box 1

g(x) = \(3x^{3}\) - \(16x^{2}\) - 7x - 36 with x = 6

g(6) = \(3(6^{3} )\) - \(16(6^{2})\) - 7(6) - 36

g6 = 3 x 216 - 576 - 42 - 36

g6 = -6

6   ÷ 6

g = -1

Box 2

h(x) = \(5x^{3}\) - \(2x^{2}\) - 3 with x = -1

h(-1) = \(5(-1^{3} )\) - \(2(-1^{2})\) -3

h-1 = -5 + 2 -3

h-1 = -6

-1    ÷  - 1

h = -6

Box 2

r(x) = \(4x^{4}\) - \(9x^{2}\) + 5x - 2 with x = 2

r(2) = \(4(2^{4} )\) - \(9(2^{2} )\) + 5(2) - 2

r2 = 64 - 36 + 10 - 2

r2 = 36

2   ÷  2

r = 18

The height at time t (in seconds) of a mass, oscillating at the end of a spring, is s(t) = 300 + 16 sin t cm. We have to find the velocity and acceleration at t = π/3 s.

Let's first find the velocity of the mass. The velocity of the mass is given by the derivative of the position of the mass with respect to time.t = π/3 s
s(t) = 300 + 16 sin t cm
Differentiating both sides of the above equation with respect to time
v(t) = s'(t) = 16 cos t cm/s

Now, let's substitute t = π/3 in the above equation,
v(π/3) = 16 cos (π/3) cm/s
v(π/3) = -8√3 cm/s

Now, let's find the acceleration of the mass. The acceleration of the mass is given by the derivative of the velocity of the mass with respect to time.t = π/3 s
v(t) = 16 cos t cm/s
Differentiating both sides of the above equation with respect to time
a(t) = v'(t) = -16 sin t cm/s²
Now, let's substitute t = π/3 in the above equation,
a(π/3) = -16 sin (π/3) cm/s²
a(π/3) = -8 cm/s²
Given, s(t) = 300 + 16 sin t cm, the height of the mass oscillating at the end of a spring. We need to find the velocity and acceleration of the mass at t = π/3 s.
Using the above concept, we can find the velocity and acceleration of the mass. Therefore, the velocity of the mass at t = π/3 s is v(π/3) = -8√3 cm/s, and the acceleration of the mass at t = π/3 s is a(π/3) = -8 cm/s².
At time t = π/3 s, the velocity of the mass is -8√3 cm/s, and the acceleration of the mass is -8 cm/s².

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Answer:

$0.09.

Step-by-step explanation:

2.99/33

= $0.0906

Answer:

D is (-4, -4)

Step-by-step explanation:

M = (x1 + x2)/2

-3 = (-2 + x2)/2

-6 = -2 + x2

x2 = -4

M = (y1 + y2)/2

-7 = (-10 + y2)/2

-14 = -10 + y2

y = -4

There are 126 blue marbles.

Total marbles in the bag=150

There are 21 blue marbles for every 4 white marbles then the sequence will be⇒ 4+21+4+21+4+21+4+21+4+21+4+21=150

21 blue marbles appear 6 times for every 4 blue marbles

So 21×6=126 blue marbles and 4×6=24, then 126+24=150 total marbles

∴There will be a total of 126 blue marbles along with 24 white marbles among the 150 marbles.

Answer:

9b²-4

Step-by-step explanation:

(3b-2)(3b+2)

9b²+6b-6b-4

9b²+0-4

9b²-4

first to answer, pls brainliest.

The probability that the mean lifetime of 25 randomly selected tires of this type will exceed than 42,000 miles is 25.14.

To break this problem, we need to use the standard normal distribution, assuming that the distribution of tire continuances is roughly normal. We can regularize the value of 42,000 using the formula

z = ( x- μ)/ σ

where x is the value of interest( 42,000 long hauls), μ is the mean tire continuance( 40,000 long hauls), and σ is the standard deviation( 3,000 miles). Plugging in the values, we get

z = ( 42,000- 40,000)/ 3,000 = 0.67

Using a standard normal distribution table or calculator, we can find the probability that an aimlessly named tire will last further than 42,000 long miles by looking up the area to the right of z = 0.67 under the standard average wind. This probability is roughly 25.14.

thus, the probability that a tire named arbitrarily from this brand will last more than 42,000 miles is roughly 25.14.

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The correct question is given below-

A particular brand of tires lasts an average of 40,000 miles with a standard deviation of 3,000 miles. What is the probability a tire selected at random lasts more than 42,000 miles?

Answer:

Step-by-step explanation:

hello : here is an solution

Answer: 816

Step-by-step explanation:

h(3) = 1248 - 160(3) + 16(3)

h(3)= 1248 - 480 + 48

h(3)= 816

Answer:

1 /12

Step 1

eef

By applying Pythagoras' theorem, the length of x is equal to 10 units.

In Mathematics and Geometry, Pythagorean's theorem is modeled or represented by the following mathematical equation (formula):

x² + y² = z²

Where:

x, y, and z represents the length of sides or side lengths of any right-angled triangle.

Based on the information provided about the side lengths of this right-angled triangle, we have the following equation:

x² = y² + z²

x² = 8² + 6²

x² = 64 + 36

x = √100

x = 10 units.

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Answer:

8.9

Step-by-step explanation:

Answer:

0.34

Step-by-step explanation:

\( {0.5 }^{2} + {0.3}^{2} \\ 0.25 + 0.09 \\ = 0.34\)

(I'm not sure if this is what you meant)

Answer:

Following are the solution to the given question:

Step-by-step explanation:

For point a:

\(6.5 - 4.9 = 2.4 \\\\\frac{2.4}{1.2} = 2 \\\\\sigma \ \ so \ k = 2\)

For point b:

\(\frac{3}{1.2}\ \ \sigma\ \ so \ k =\frac{3}{1.2} \ \ so\ \ 1- \frac{1}{k ^2} = 0.84\)

For point c:

Once again, we have k = 2 though with Chebyshev discrepancy of witness numbers in the same number of standard deviations off mean = at least 75 percent.

Answer:

y^2 + 5y = 0

y(y + 5) = 0

y = 0, -5

The answer is y = 0 and y = -5.

The given question :

The distance of ship from the base of the lighthouse is 328.54m, as found with the help of angle of depression.

Given:

To find: Distance of ship from the base of the lighthouse.

Finding:

Let 'x' be the distance of the ship from the base of the lighthouse and θ be the angle of depression.

Then, tanθ = \(\frac{160}{x}\)

=> x = \(\frac{160}{tan26}\)

=> x = \(\frac{160}{0.487}\)

=> x = 328.54m

Hence, The distance of ship from the base of the lighthouse is 328.54m, as found with the help of angle of depression.

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Answer:

9.25

13 - 0.75t

Step-by-step explanation:

0.75 * 5 = 3.75

13 - 3.75 = 9.25

hope this helps!

Answer:

B is correct

Step-by-step explanation:

Answer:

you nepali me nepali all are nepalese nepalese are only unintelligent

Answer:

149.04 in^2

Step-by-step explanation:

The image of the question can be seen below.

In the image, we can see two circles that intersect at a given point.

We know that the total area of the image is 350 in^2

We want to find the area of the shaded part.

Ok, this seems to be hard, so instead, let's find the area of the two non-shaded parts (two semicircles) and just subtract that area from the total area of 350in^2

The two non-shaded parts are half a circle of diameter 16 inches.

We know that for a circle of diameter D, the area is:

A = pi*(D/2)^2

Where pi = 3.14

And because we want to find the area of two semicircles of diameter 16 inches, is exactly the same as finding the area for a single circle of diameter 16 inches.

This is:

A = 3.14*(16in/2)^2 = 3.14*(8in)^2 = 200.96 in^2

Now we can just subtract this from the total area:

shaded area = total area - A

shaded area = 350 in^2 - 200.96 in^2

shaded area = 149.04 in^2

The solution to the given system of equations is:x = 2
y = -1
z = 4.The given system of equations has a unique solution which is x = 2, y = -1, and z = 4.

To determine if the given system of equations has a unique solution, we need to substitute the given values of y, z, and x into the equation and check if it satisfies the equation.

Given:
x + 2y + z = 4
y = x - 3
z = 2x

Substituting the values of y, z, and x into the equation, we have:
x + 2(x - 3) + 2x = 4
x + 2x - 6 + 2x = 4
5x - 6 = 4
5x = 10
x = 2

Now, substitute the value of x back into the equations for y and z:
y = 2 - 3
y = -1

z = 2(2)
z = 4

Therefore, the solution to the given system of equations is:
x = 2
y = -1
z = 4

In conclusion, the given system of equations has a unique solution which is x = 2, y = -1, and z = 4.

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Answer:

$7.65 million dollars / $7.55 * 10^6

Step-by-step explanation:

30*1.5=45 seconds

5.1*1.5=7.65

for scientific notation just take the number of zeros and use that for exponent, and make a dot so it is a number less than 10

Answer:

$10

Explanation:

If you only have to pay $5 of the $15 you gave him, he has to pay you 15-5 or $10 back.

The area of a triangle is computed as follows:

where b is the base, and h is the height

Replacing with A = 54, h = 18, and solving for b, we get:

The base of the triangle is 6 in

Answer:

i believe it is

Step-by-step explanation:

a 10.7

Answer: c

Step-by-step explanation:

we can use process of elimination because the side that x is on is bigger than the opposite side so there fore it is c

Answer:

Explanation:

Answer:

i dunno

Step-by-step explanation: