what is -3 take away -1?

Answer:

-5+ 20i

Step-by-step explanation:

just distribute: \((\sqrt{-5})(2\sqrt{20}+\sqrt{-5})\)---> \((2\sqrt{-100}) -5\) and because 100 is the perfect square of 10 you get -5+20i

The lifting force if the speed is 220 miles per hour is F' = 708.53 N.

The force of light, or simply light, is the sum of all forces on an object that cause the object to move perpendicular to the direction of flow.

The most common type of lift is the wing lift. But there are many other common uses, such as propellers on airplanes and ships, rotors on helicopters, fan blades, sails on sailboats, and wind turbines.

We have,

The lifting force, F, exerted on an airplane wing varies jointly as the area, A, of the wing's surface and the square of the plane's velocity, v. It, means that,

\(F=kAv^{2}\)

Where

k is constant

If, A = 190 Ft², v = 220 mph, F = 950 pounds

Now, find k first from the above data. So,

    \(k=\frac{F}{Av^{2} }\)

⇒ \(k=\frac{950}{190* (220)^2}\)

⇒ k = 0.0001033

It is required to find the lifting force on the wing if the plane slows down to 190 miles per hour.

Let F' is a new force. So,

    F' = 0.0001033 × 190 × (190)²

⇒ F' = 708.53 pounds.

So, the lifting force is 708.53 pounds if the plane slows down to 190 miles per hour.

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Answer:

x= 17

HJ= 27

JK= 153

HK= 180

Step-by-step explanation:

If HJ=x+10

JK=9x

KH=14x−58

a) The diagram of sketch of the segments described above is attached to this answer.

b) KH = HJ + JK

14x - 58 = (x + 10) + 9x

14x - 58 = x + 10 + 9x

c)

14x - 58 = x + 10 + 9x

14x - 58 = 10x + 10

Collect like terms

14x - 10x = 10 + 58

4x = 68

Divide both sides by 4

4x/4 = 68/4

x = 17

d)

x= 17

HJ= x + 10

= 17 + 10

= 27

Hence, HJ = 27

JK= 9x

= 9 × 17

= 153

Hence, JK = 153

HK=14x −58

HK = 14 × 17 - 58

= 238 - 58

= 180

Hence, HK = 180

The probability that the service center will receive more than 4 calls in a 1-minute period is 0.2061. The probability that the first call is received between 8:01 and 8:02 am is approximately 0.2381.

(a) Let X be the number of calls in a 1-minute period. Then, X ~ Poisson(2). We need to find P(X > 4). Using the Poisson probability formula:

P(X > 4) = 1 - P(X ≤ 4) = 1 - ∑(k=0 to 4) e^(-2) * 2^k / k!

Calculating the sum, we get:

P(X > 4) = 1 - (e^(-2)*2^0/0! + e^(-2)*2^1/1! + e^(-2)*2^2/2! + e^(-2)*2^3/3! + e^(-2)*2^4/4!)

= 1 - (0.4060 + 0.2707 + 0.0902 + 0.0225 + 0.0045)

= 0.2061

Therefore, the probability that the service center will receive more than 4 calls in a 1-minute period is 0.2061.

(b) Let Y be the time (in minutes) between the opening of the center and the first call received. Then, Y ~ Exponential(2). We need to find P(1 < Y ≤ 2). Using the Exponential probability formula:

P(1 < Y ≤ 2) = ∫(1 to 2) 2e^(-2y) dy

Evaluating the integral, we get:

P(1 < Y ≤ 2) = e^(-2) - e^(-4) ≈ 0.2381

Therefore, the probability that the first call is received between 8:01 and 8:02 am is approximately 0.2381.

(c) Let X be the number of calls in a 1-minute period. We want to find the number of calls that is too many, such that if the center receives that many calls, the supervisor will reject the hypothesis of 2 calls per minute, on average, at a significance level of 0.05. This is equivalent to finding the critical value of X for a Poisson distribution with λ = 2 and a right-tailed test with α = 0.05. Using a Poisson distribution table or a calculator, we find that the critical value is 5.

Therefore, if the center receives 6 or more calls in a 1-minute period, the supervisor will reject the hypothesis of 2 calls per minute, on average, at a significance level of 0.05.

(d) Let X be the number of calls in a 1-minute period. We want to find P(2 out of 3 calls are complaints). Since each call is a complaint with probability 0.2 and a request for assistance with probability 0.8, the distribution of X is a Binomial(3, 0.2). Therefore:

P(2 out of 3 calls are complaints) = P(X = 2) = (3 choose 2) * 0.2^2 * 0.8^1 = 0.096

Therefore, the probability that exactly 2 out of 3 calls are complaints is 0.096.

(e) Let X be the total number of calls in a 5-minute period, and let Y be the number of complaints in a 5-minute period. Then, X ~ Poisson(10) and Y ~ Binomial(25, 0.2), since there are 25 independent 1-minute periods in a 5-minute period, and each call is a complaint with probability 0.2.

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Answer:

-3

Step-by-step explanation:

H = -3

J = -1

J = -1

M=2

(-3+-1)+(-1+2)=-3

Answer:

9

Step-by-step explanation:

14-5=9

therefore TV=9

hope this helped

Answer:

Step-by-step explanation:

jjjjjjjj

Answer:

6 units right I believe

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

I'm pretty sure if he does he can't gain nor.loose

Answer:

The number of feet away from the sprinkler where it could spread water would be the radius of the circle in which it is spraying.

The Area of a circle is

πr2=808.64

(3.14)r2=808.64

Divide both sides by 3.14

r2=257.5286624

Square root both sides to get radius

r=16 feet

7 feet away from the sprinkler can it spread water if the area formed by the watering pattern is 907.46 square​ feet

What information do we have?

Area of watering pattern = 907.46 square​ feet

Area of watering pattern = Area of circle

Area of watering pattern = πr²

907.46 = (3.14)r²

r² = 289

r = 17

Length = 17 feet

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Answer:

es la tercera amiga yo pienso

The vertex of the function f(x) = x² + 12x is,

⇒ Vertex = (- 6, - 36)

A relation between a set of inputs having one output each is called a function. and an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).

Given that;

The function is,

⇒ f (x) = x² + 12x

Now, We can change the function into the form,

f (x) = (x - h)² + k

Where, (h, k) is vertex.

Here, The function is,

⇒ f (x) = x² + 12x

⇒ f (x) = x² + 12x + 36 - 36

⇒ f (x) = (x + 6)² - 36

⇒ f (x) = (x - (- 6))² + (- 36)

Hence, By comparing,

Vertex = (h, k) = (- 6, - 36)

Thus, The vertex of the function f(x) = x² + 12x is,

⇒ Vertex = (- 6, - 36)

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The graph will cross the x-axis if the multiplicity of the real root is odd.

What is polynomial?

In arithmetic, a polynomial is an expression consisting of indeterminates and coefficients, that involves solely the operations of addition, subtraction, multiplication, and positive-integer powers of variables.

Main body:

For polynomials, the graph will cross the x-axis if the multiplicity of the real root is odd, and just touch the x-axis if the multiplicity of the real root is even. (The multiplicity of the root is the number of times it occurs as a root)

(a) y=(x+1)^2(x-2) The graph crosses at x=2 (multiplicity 1) but touches at x=-1 (mulitplicity 2)

(b) y=(x-4)^3(x-1)^2 The graph crosses at x=4 (multiplicity 3) but touches at x=1 (m=2)

(c) y=(x-3)^2(x+4)^4 The graph touches at x=3 and x=-4 as the multiplicities are both even.

The graphs: (a) black, (b) red, (c) green

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Answer:

It is d

Step-by-step explanation:

The final step in solving the inequality -2(5 - 4x) < 6x - 4 is x > 3. This means that for the given The final step in solving the inequality -2(5 - 4x) < 6x - 4 is x > 3. This means that for the given inequality to hold true, the value of x must be greater than 3.

Let's go through the steps to solve the inequality:

Step 1: Distribute the -2 to the terms inside the parentheses: -2 * 5 + 2 * 4x < 6x - 4

Simplifying: -10 + 8x < 6x - 4

Step 2: Move the terms involving x to one side and the constant terms to the other side: -10 < 6x - 8x - 4

Simplifying: -10 < -2x - 4

Step 3: Combine like terms: -10 < -2x - 4

Step 4: To isolate x, we need to move the constant terms to the other side by adding 4 to both sides: -6 < -2x + 4

To solve for x, we divide both sides by -2, remembering to flip the inequality sign because we are dividing by a negative number: -6/-2 > -2x/-2 + 4/-2

Simplifying: 3 > x + 2

Finally, subtract 2 from both sides to isolate x: 3 - 2 > x + 2 - 2

Simplifying: 1 > x

Therefore, the final step in solving the inequality -2(5 - 4x) < 6x - 4 is x > 3.

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Answer: All of the above

Step-by-step explanation:

The formula for the standard error of the mean is:

σM =σ/√N

where,

σM = standard error of the mean

σ = standard deviation of sample

√N = square of sample size

As the sample size of a population rises, it should be noted that the standard error of the mean will decrease. This is due to the fact that when there's an increase in sample size, there'll be cluster of the sample mean around the population mean.

Also, the the standard error of the mean measures the variability of the sample mean from sample to sample and is never larger than the standard deviation of the population.

Therefore, the answer will be "all or the above".

Caroline saved $3. 84 on a discounted item that was marked down 15% off of the original price of the item. What was the original price of the item before the discount, the original price of the item was $4.52 before the discount.

Let the original price of the item be $x. The item was marked down by 15%, so the discounted price is 85% of the original price. This is equivalent to saying that the discounted price is 100% - 15% of the original price. Mathematically, we can write this as: 0.85x = discounted price

Since Caroline saved $3.84 on the discounted item, we can write an equation that equates the amount she paid for the item to the discounted price minus the amount she saved. Mathematically, we can write this as:

0.85x - 3.84 = amount paid

Solving for x (the original price) requires us to rearrange the equation to isolate x. Mathematically, we can write this as:

x = (amount paid + 3.84) / 0.85

Substituting in the given values gives: x = ($0.00 + $3.84) / 0.85 = $4.52

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Answer:

its C

Step-by-step explanation:

Write the area A of an equilateral triangle as a function of the length s of its sides. Draw the triangle; label each side "2s". Draw the altitute; it will bisect the base into s and s. ... Therefore, the area is equal to the measure of the bisected side times the measure of the altitude, quantity divided by 2.

HOPE SO IT HELPS YOU

Answer:

Step-by-step explanation:

Part A

Each side including     the base is s.

Part B

Use 1/2 the base to find the height. The height meets the base at 90 degrees which gives you the right to use c^2 = b^2 + a^2

The hypotenuse is s

The base is 1/2s

h^2 = s^2 - (1/2s)^2

h^2 = s^2 - 1/4 s^2

h^2 = 3s^2/4

h = sqrt(3)/2 *s

Area = 1/2 * s * sqrt(3)/2 s

Area = 1/4 * s^2 * sqrt(3)

The correct statement regarding the function plotted in the graph is:

C) The maximum value of the quadratic function occurs at y = 4.

When x = 0, y = -7, and when x = -5, y = 8, hence the rate of change(change in y divided by change in x) is given by:

R = [8 - (-7)]/-5 - 0 = 15/-5 = -3

It is concave down, hence it has only a maximum value at y = 4 and not a minimum value, hence option C is correct.

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Answer:

Step-by-step explanation:

A store offers discounts on all its products at the same percentage. Camila bought a beach chair that cost $ 26,970, but paid $ 21,576. If he also paid $ 15,992 for a sunshade. What was the original price of this one?

Step 1

Find the percentage discount

% discount = Discount amount/ Original amount × 100

= $26,970 - $ 21,576/$26,970 × 100

= 0.2 × 100

= 20%

Given :

Original price , P .

Discount given , 35 % .

To Find :

The final discounted price of the object .

Solution :

Let final price is x .

Now , x = p - (35% of p) .

\(x=p-\dfrac{35}{100}p\\\\x=0.65p\)

Therefore , final price of the object is 0.65p ,

Hence , this is the required solution .

Alicia envió un total de 20 correos electrónicos durante dos días.

En este problema tenemos conocimiento de que Alicia envió 4 correos electrónicos en el primer día y que al segundo día envió el cuadrado de la cantidad del día anterior. Este es un caso de serie geométrica.

En consecuencia, el total de correos electrónicos enviados por Alicia es la suma de correos enviados en aquellos dos días, es decir:

n = 4 + 4²

n = 4 + 16

n = 20

En consecuencia, Alicia envió un total de 20 correos electrónicos durante dos días.

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Answer:

3n = 2n + 4

Step-by-step explanation:

That is that as an equation.

Answer:

-34.2

Step-by-step explanation:

5.7

x 6

___

34.2 (add negative sign cuz the bigger number is negative)

Please mark me brainliest If I help :)

Answer:

Step-by-step explanation:

call x the mother deer, y the baby deer, we have x = 2y

x + y = 4,5 ---> x = 3, y = 3/2

Answer:

2.25

Step-by-step explanation:

4.5 / 2

Answer:

The answer should be "No Solution" as these lines never meet each other

Answer:

p = 1/41

Step-by-step explanation:

Answer

Dude my name is Lara and my fourth grade teacher was mrs. Watson..... but the dress shop is the answer.... guess my boutique just wasn’t it huh:

Step-by-step explanation:

Answer:

where is the question?......