need urgent help in math please!!

please help find answer, and explain how you got it! (solution) thank u!!

Answer:

Step-by-step explanation:

perp. -8

y - 4 = -8(x + 2)

y - 4 = -8x - 16

y = -8x - 12

The probability that all three machines (A, B, and C) are operational at midday tomorrow is 0.684, or 68.4% when expressed as a percentage.

To find the probability that all three machines are operational at midday tomorrow, we need to multiply the probabilities of each machine being in action.

The probability of machine A being in action is 1 - 0.10 = 0.90 (since it is out of action for 10% of the time).

The probability of machine B being in action is 1 - 0.05 = 0.95 (since it is out of action for 5% of the time).

The probability of machine C being in action is 1 - 0.20 = 0.80 (since it is out of action for 20% of the time).

Since the machines operate independently, we can multiply these probabilities together to get the probability that all three machines are operational:

Probability (All machines operational) = Probability (Machine A in action) * Probability (Machine B in action) * Probability (Machine C in action)

= 0.90 * 0.95 * 0.80

= 0.684

Therefore, the probability that all three machines (A, B, and C) are operational at midday tomorrow is 0.684, or 68.4% when expressed as a percentage.

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A(n) IQ test evaluates a child's performance in relation to other kids in terms of how well they can perform specific activities at a specific time.

Each individual IQ exam is made up of a number of smaller questions, and no reading nor writing are required. Some verbal subtests consist of spoken questions with no set time restriction. Other subtests are frequently timed and typically have a visual or spatial focus. It takes one to two hours to give the exam.

115 to 129: Superior or intelligent. 130 through 144: Fairly talented. From 145 through 159: Very talented. Exceptionally talented from 160 to 179.

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To educate a patient on how to judge the appropriate size of a serving of chicken or lean beef, a good estimate of a 3-ounce serving size is a typical deck of cards or the palm of their hand. This will help them make healthy choices and keep track of their portions. So, a good estimate of a 3-ounce serving size is a typical deck of cards or the palm of your hand.

A serving size is a standardized amount of food or drink that is intended to make it easier for people to compare the nutritional content of different products and understand how much they are consuming. A serving size might be listed on a food label or recommended as part of a healthy eating plan or diet.

The recommended serving size for different foods and beverages can vary depending on several factors, including a person's age, sex, and physical activity level, as well as the nutrient content of the food or drink.

For example, a serving of fresh vegetables might be 1 cup, while a serving of meat, poultry, or fish might be 3 ounces. A good estimate of a 3-ounce serving size is a typical deck of cards or the palm of your hand. This can help you make healthy choices and keep track of your portions.

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Answer:

which one

Step-by-step explanation:

which one

The number of real solutions of the system are 2 if y=x²-3, y = -2x +4

An equation system's solution is a collection of values for the variable that concurrently fulfill each equation. Finding all of the possible sets of variable values that make up the system's solutions is necessary to solve an equation system. However, the second equation does not have a solution at (5, 4). There is often only one solution to a system of linear equations, however it is possible for there to be infinite or no solutions (parallel lines) on occasion (same line).

Given,

y=x²-3 -----(1)

y=-2x +4 -----(2)

Solving equations 1 and 2, we get

x²-3=-2x +4

x²+2x-3-4=0

x²+2x-7=0

We have to solve by using quadratic formula,

x= (-b±√b²-4ac)/2a

x= (-2±√2²-4(1)(-7))/2(1)

x= (-2±√4+28)/2

x= (-2±√32)/2

x= (-2±4√2)/2

x= -1±2√2

x= -1-2√2, -1+2√2

Thus, the system has two solutions.

Therefore, the number of real solutions of the system are 2.

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Answer:

Step-by-step explanation:

Direct variation equation:

Given:

The equation is:

Find the value of x when y = 168:

The equation x² + 4x + 9 = 0 are complex numbers: x = -2 + i√5 and x = -2 - i√5.

To find the solutions for the equation x² + 4x + 9 = 0, we can use the quadratic formula:

x = (-b ± √(b² - 4ac)) / (2a)

Comparing this equation with the given equation x² + 4x + 9 = 0, we can see that a = 1, b = 4, and c = 9.

Plugging in these values into the quadratic formula, we have:

x = (-4 ± √(4² - 4(1)(9))) / (2(1))

x = (-4 ± √(16 - 36)) / 2

x = (-4 ± √(-20)) / 2

Since the value inside the square root is negative, we know that the solutions will involve complex numbers. Simplifying further, we have:

x = (-4 ± i√20) / 2

x = (-4 ± 2i√5) / 2

Simplifying the expression by dividing both the numerator and denominator by 2, we get:

x = -2 ± i√5

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Answer:

Hope this is helpful to you

Answer:

1 meter

Step-by-step explanation:

Okay so, all sides of a square are equal right? And is one side is 1 meter, then all of the sides are 1 meter. Your multiplying one by itself, making the answer pretty easy to find out.

We can write the given series as:

∑ (-1)^n / (n*2^n), n=1 to infinity

To approximate the sum of the series using the first six terms, we can simply add up the first six terms:

(-1)^1 / (12^1) - (-1)^2 / (22^2) + (-1)^3 / (32^3) - (-1)^4 / (42^4) + (-1)^5 / (52^5) - (-1)^6 / (62^6)

Simplifying this expression, we get:

1/2 - 1/8 + 1/24 - 1/64 + 1/160 - 1/384

= 0.5279 (rounded to four decimal places)

Therefore, the sum of the series, approximated by using the first six terms, is approximately 0.5279.

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The probability for given conditions are a) p(4)=0.166, b) p(even)=0.5 and c) p(greater than 3)=0.5

A die is rolled, then the sample space for outcomes is {1,2,3,4,5,6}

Total number of outcomes =6

Thus, the probability for given conditions are a)p(4)=0.166, b)p(even)=0.5 and c)p(greater than 3)=0.5

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Answer:

10,000

Hope I helped :)

Answer:

10,000

Step-by-step explanation:

As you see, it says of what number, which means:

43% × ? = 4,300 =>

? =

4,300 ÷ 43% =

4,300 ÷ (43 ÷ 100) =

(100 × 4,300) ÷ 43 =

430,000 ÷ 43 =

Therefore, that number is 10,000.

Answer:36

Step-by-step explanation:

60÷5×3=36

Answer:

x = q - 3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Step-by-step explanation:

Step 1: Define Equation

x + 3 = q

Step 2: Solve for x

Answer:

I think it would be C

I'm not completely sure though!

Answer:

4x^2+9xy+6y^2

Step-by-step explanation:

7x^2+5xy-3y^2 -(2x^2+3xy-5y^2+x^2-7xy-4y^2)

7x^2+5xy-3y^2-(3x^2-4xy-9y^2)

7x^2+5xy-3y^2-3x^2+4xy+9y^2

4x^2+9xy+6y^2

1. 13 hamsters

2. 66 legs

1. From the question, we are told that a hamster has 4 legs

Given that there are a total of 52 legs, so to find the total number of hamsters present, we simply go on to divide the number of total legs by the number of legs a hamster has

Mathematically; that would be 52/4 = 13 hamsters

2. Here, we want to the total number of legs present in a house where we have 4 bettles , 5 hamsters and 11 birds

1 bettle has 6 legs

so 4 bettles will have 4 * 6 = 24 legs

1 hamster has 4 legs

so 5 hamsters will have 5 * 4 = 20 legs

1 bird has two legs

so 11 birds will have 11 * 2 = 22 legs

So the total number of legs present in the house will be the addition of all the legs

That will be 24 + 20 + 22 = 66 legs

3. Here, we have a total of 32 legs , we now want to find the different combination of all the animals present

What is important here is that at any point, for any combination, the total number of legs must be eual to exactly 32

We proceed as follows;

1 bird

1 bettle

6 hamsters

Another can be;

2 birds

2 bettles

4 hamsters

Another combination can be

3 hamsters

3 bettles

1 bird

and so on

Answer:

3 raise to power -100

Step-by-step explanation:

If you like my answer than please mark me brainliest thanks

The number of different sets of officers possible is 1716 sets.

The number of sets of officers possible is the number of ways people can be chosen for the given posts.

Since there are 13 people available for the post of president,

The choice can be made in

13 ways.

For the post of the Vice-President, there are 12 likely candidates. Hence, the choice can be made in

12 ways

Similarly for the post of treasurer, there are 11 likely candidates available. Hence, the choice can be made in 11 different ways.

Hence, the total number of sets of officers possible are

13 X 12 X 11

= 1716 sets.

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Explanation:

The distance we're after is the vertical distance from the point to the line. So we only care about the difference in y values from y = -19 to y = 3

You can count out the spaces or use subtraction along with absolute value

distance from P to Q = |P-Q|

distance from -19 to 3 = |-19-3|

distance from -19 to 3 = |-22|

distance from -19 to 3 = 22

The absolute value is to ensure the result is never negative.

Answer:

Step-by-step explanation:

2/5r=2/3 : multiply both sides by the reciprocal of 2/5 (5/2)

(5/2)(2/5)r=(2/3)(5/2) : 5/2 and 2/5 cancel out, leaving r

r=(2/3)(5/2) : cancel 2

r= 5/3

Answer:

I think option c is correct

:::::::::::::::::::::::::::::::::::::::::::::::::

Answer:

384

Step-by-step explanation:

Triangle sides: 12x10/2. Then multiply by four to get all four sides.

Bottom: 12x12.

Add together, get 384.

Answer:

3 $10 coins and 5 $5 coins

Step-by-step explanation:

The Polynesian Triangle is a vast region of the Pacific Ocean that encompasses Hawaii, New Zealand, and Easter Island. The Polynesians were skilled navigators who traveled across this vast expanse of water using only the stars, winds, and currents to guide them. They developed a sophisticated system of navigation that allowed them to travel thousands of miles across the open ocean with remarkable accuracy.

One of the primary methods used by the Polynesians to navigate the Polynesian Triangle was celestial navigation. They used the stars, moon, and planets to determine their position and direction. They had an intimate knowledge of the night sky and could identify hundreds of stars and constellations. They used these celestial bodies to create mental maps of the sky that they could use to navigate by. They also used the position of the sun during the day to determine their direction.

Another method used by the Polynesians was wayfinding. Wayfinding is a complex system of navigation that involves observing the natural environment, such as waves, clouds, and birds, to determine one's position and direction. The Polynesians had an intimate knowledge of the ocean currents and wind patterns in their region. They could read the waves and clouds to determine their direction and could even detect land from great distances by observing the behavior of birds.

The Polynesians also used navigational instruments such as the kamalae and the kapele. The kamalae was a wooden board with a small hole in it that was used to measure the angle between two stars. The kapele was a cord with knots tied in it that was used to measure distance traveled.

It is important to note that Indigenous knowledge is often passed down through oral traditions and cultural practices. When interpreting this knowledge, it is essential to do so with respect for its origins and context. Adding interpretations or misrepresenting Indigenous knowledge can dilute its meaning and significance.

In conclusion, the Polynesians used a variety of methods to navigate the Polynesian Triangle, including celestial navigation, wayfinding, and navigational instruments. Their knowledge of the natural environment and their ability to read the stars and currents allowed them to travel vast distances across the open ocean with remarkable accuracy. When interpreting Indigenous knowledge, it is essential to do so with respect for its origins and context.

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The domain and range of f(x) = -24 are given as follows:

The domain and range of f(x) = 0.5(x + 4)² - 11 are given as follows:

The range of y = -2x² + 12x - 13 is given as follows:

y <= 5.

The domain of a function is the set that contains all the input values that can be assumed by the function.

As neither of the functions in this problem have any restriction, the domain is all real values for the two of them.

The range of a function is the set that contains all the output values that can be assumed by the function.

The ranges are given as follows:

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Answer:

The only difference between the two is the "-4" in the second function.  This is a vertical translation.  g(x) will give the same curve, but 4 units lower on the graph.

Answer:

a shift of 4 units right

Step-by-step explanation:

Given f(x) then f(x + a) represents a horizontal translation of f(x)

•  If a > 0 then shift to the left by a units

• If a < 0 then a shift to the right by a units

Thus for g(x) = (x - 4)³

The graph of g(x) is the graph of f(x) shifted 4 units to the right

Answer:

No

Step-by-step explanation:

3x-5= 4+2x

Or, x=4+5

x=9