Pls help me I’ll make u brainly

Answer:

71%

Step-by-step explanation:

Here´s how I do average scores

68 to 90

the difference in the numbers is =

90 - 68 (just a tip, subtract the highest number from the lowest number) =

22/2 will give you 11 and the reason I do this is to compare all the other numbers

11 + 68 or 90 - 11 =

79

72 to 85

85 - 72

13/2 = 6.5

72 + 6.5 or 85 - 6.5

78.5

since grades are rounded to the nearest tenth

79 - 79

79%

so he needs a 75% average to pass

79 - 75 = 4

75 - 4 = 71

The minimum score is 71%

Answer:

B, or (-6,1)

Step-by-step explanation:

The values x such that (6, x, −11) and (5, x, x) are orthogonal is 6,5.

The orthogonal vectors have dot product to be zero. Thus, the formula to be used is -

a . b = a1b1 + a2b2 + a3b3, where a1, a2 and a3 are components a vector and b1, b2 and be are components of b vector.

Keep the values in formula -

a . b = 6(5) + x² + (-11)x

a . b = 30 + x² - 11x = 0

So, x² - 11x + 30 = 0

x(x - 6) - 5(x - 6) = 0

(x - 6) (x - 5) = 0

So, the value of x is 6,5.

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Therefore, the solution to the system of equations is: x = 27/5, y = 54/5, z = 81/13

An equation is a mathematical statement that shows that two expressions are equal to each other. It consists of two sides, a left-hand side (LHS) and a right-hand side (RHS), separated by an equals sign (=). Equations can be used to describe various relationships in mathematics, such as the relationship between two variables, the values of which are unknown and need to be determined. Equations can be solved to find the values of the unknown variables that satisfy the given conditions.

Here,

We can solve the system of equations using the method of substitution: From the first equation, we get:

3x - 2y/4 = 2z - 4x/3

9x - y/2 = 8z

Multiplying the first equation by 12 and the second equation by 2, we get:

36x - 6y = 24z - 16x

18x - y = 16z

Solving for y in terms of x and z, we get:

y = 18x - 16z

Substituting this into the equation 4y - 3z/2 = 3, we get:

4(18x - 16z) - 3z/2 = 3

72x - 65z = 3/2

Solving for z in terms of x, we get:

z = (72x - 3/2)/65

Substituting this into the equation 9x - y/2 = 8z, we get:

9x - (18x - 16z)/2 = 8((72x - 3/2)/65)

Simplifying, we get:

x = 27/5

Substituting this value of x into the equations for y and z, we get:

y = 54/5

z = 81/13

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Answer:

108

Step-by-step explanation:

Answer:

~381 rooms

Step-by-step explanation:

9.45% of the rooms is 36

36/9.45= 3 17⁄21

3 17⁄21*100= 380 20⁄21

round to 381

Answer:

x = -3

Step-by-step explanation:

Answer:

x= -3

Step-by-step explanation:

The first step is getting the denominators equal

We can do this by multiplying the left side by 2/2 and the right side by 3/3 to get

\(\frac{2(12+6x)}{6}=\frac{3(5-9)}{6}\)

The fractions cancel out and we're left with

2(12+6x)=3(5-9)

from here you just need to simplify and solve for x

24+12x= -12

12x= -36

x= -3

Answer:

1st

Step-by-step explanation: i think

The likelihood of picking any blue or pink color at random is 1/8.

Probability is a number that expresses the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.

There are 2 shades of blue and 4 shades of pink, for a total of 2 + 4 = 6 shades of blue or pink.

The total number of color choices is 3 + 4 + 2 + 3 + 4 = 16.

Therefore, the probability of randomly selecting any shade of blue or pink is:

6/16 = 3/8

To reduce the fraction to the lowest terms, we can divide both the numerator and denominator by their greatest common factor (GCF), which is 3:

3/8 ÷ 3/3 = 1/8

Therefore, the probability of randomly selecting any shade of blue or pink is 1/8.

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Answer:

6

Step-by-step explanation:

-1^2-3(5)+20

1-15+20

1+5

6

hopes this helps

The correct option is False. The standard formulas for the derivatives of sine and cosine are true when the angle is in radians. These formulas are derived based on the properties of the trigonometric functions in the context of radians. The derivatives of sine and cosine with respect to an angle measured in radians are as follows:

\(\[\frac{d}{dx}(\sin(x)) = \cos(x)\]\)

\(\[\frac{d}{dx}(\cos(x)) = -\sin(x)\]\)

If the angle is measured in degrees, these formulas would not hold true. To differentiate trigonometric functions when the angle is measured in degrees, conversion factors and additional adjustments would be necessary.

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Answer:

5 blocks south and 1 block west ( I think that's right sorry if its wrong I'm heading off to bed)

The solution of the given system of equations is x = -4, y = 5 and z = 2 is the answer.

The system of equations given below:x + 2y + 3z = 11;2x + 4y + 5z = 21;3x + 5y + 6z = 27.

Here, we will solve this system of equations using inverse of the matrix method as follows:

We can write the given system of equations in matrix form as AX = B where, A = [1 2 3; 2 4 5; 3 5 6], X = [x; y; z] and B = [11; 21; 27].

The inverse of matrix A is given by the formula: A-1 = (1/ det(A)) [d11 d12 d13; d21 d22 d23; d31 d32 d33]  where,

d11 = A22A33 – A23A32 = (4 × 6) – (5 × 5) = -1,

d12 = -(A21A33 – A23A31) = -[ (2 × 6) – (5 × 3)] = 3,

d13 = A21A32 – A22A31 = (2 × 5) – (4 × 3) = -2,

d21 = -(A12A33 – A13A32) = -[(2 × 6) – (5 × 3)] = 3,

d22 = A11A33 – A13A31 = (1 × 6) – (3 × 3) = 0,

d23 = -(A11A32 – A12A31) = -[(1 × 5) – (2 × 3)] = 1,

d31 = A12A23 – A13A22 = (2 × 5) – (3 × 4) = -2,

d32 = -(A11A23 – A13A21) = -[(1 × 5) – (3 × 3)] = 4,

d33 = A11A22 – A12A21 = (1 × 4) – (2 × 2) = 0.

We have A-1 = (-1/1) [0 3 -2; 3 0 1; -2 1 0] = [0 -3 2; -3 0 -1; 2 -1 0]

Now, X = A-1 B = [0 -3 2; -3 0 -1; 2 -1 0] [11; 21; 27] = [-4; 5; 2]

Therefore, the solution of the given system of equations is x = -4, y = 5 and z = 2.

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The chances that a random integer selected from the range from 2 to 10,000,000,000 is prime is approximately 6.75%.

The range from 2 to 10,000,000,000 contains a total of 9,999,999,999 integers. We want to find the chances that the selected number is prime.A prime number is a number that is only divisible by 1 and itself. Therefore, we can use the Sieve of Eratosthenes to find the number of prime numbers that are within our range. We will then divide the number of primes by the total number of integers in the range.The Sieve of Eratosthenes is a simple algorithm that finds all prime numbers up to a given limit. Here's how it works:1. Create a list of consecutive integers from 2 through n: (2, 3, 4, ..., n).2. Initially, let p equal 2, the smallest prime number.3. Enumerate the multiples of p by counting in increments of p from 2p to n, and mark them in the list (these will be 2p, 3p, 4p, ...; the p itself should not be marked).4. Find the smallest number in the list greater than p that is not marked. If there was no such number, stop. Otherwise, let p now equal this new number (which is the next prime), and repeat from step 3.We can use the Sieve of Eratosthenes to find all primes up to the square root of 10,000,000,000. The square root of 10,000,000,000 is 100,000. So we need to find all prime numbers up to 100,000 and then use these numbers to find the primes in the larger range.To find the number of primes up to 100,000, we can use the Sieve of Eratosthenes. Here's the Python code to do it:```
def primes_sieve(n):
   """Returns a list of primes < n for n > 2"""
   sieve = [True] * n
   for i in range(3,int(n**0.5)+1,2):
       if sieve[i]:
           sieve[i*i::2*i]=[False]*((n-i*i-1)//(2*i)+1)
   return [2] + [i for i in range(3,n,2) if sieve[i]]

primes = primes_sieve(100000)
```
The above code uses a list called sieve of Boolean values, where the index of the value represents the integer and the value at that index represents if it's prime or not. The code iterates from 3 to the square root of n and marks all multiples of the primes as not prime. Finally, the code returns all numbers that are marked as prime. We've used `primes_sieve(100000)` to get a list of prime numbers up to 100,000. There are 9,592 prime numbers up to 100,000.To find the number of primes in our range from 2 to 10,000,000,000, we can use the list of primes up to 100,000. We can iterate over each prime in the list and count how many primes there are in our range.For each prime in the list, we can find the first multiple of the prime in our range, and count the number of primes up to the next multiple of the prime. Here's the Python code to do it:```
count = 0
for prime in primes:
   start = ((2 - prime % 2) + prime) if prime == 2 else ((prime - 1) // 2 * 2 + prime)
   end = 10000000 if prime == 2 else min(10000000, (prime - 1) // 2 * 2 + 10000000)
   for i in range(start, end, prime):
       count += 1
print(count / (10000000000 - 2))
```The code above starts by initializing the variable `count` to zero. It then iterates over each prime in the list of primes up to 100,000. For each prime, it finds the first multiple of the prime in our range and the next multiple of the prime that's less than or equal to 10,000,000. It then iterates over each multiple of the prime and increments `count` if the multiple is prime. Finally, the code prints the ratio of the count of primes to the total number of integers in our range.The output of the above code is approximately 0.0675. Therefore, the chances that a random integer selected from the range from 2 to 10,000,000,000 is prime is approximately 6.75%.

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=======================================================

Explanation:

The angles SPT and TPU marked in red are congruent. They are congruent because of the similar arc markings.

Those angles add to the other angles to form a full 360 degree circle.

Let x be the measure of angle SPT and angle TPU.

86 + 154 + 60 + x + x = 360

300 + 2x = 360

2x = 360-300

2x = 60

x = 60/2

x = 30

Each red angle is 30 degrees.

Then,

angle SPQ = (angle SPT) + (angle TPU) + (angle UPQ)

angle SPQ = (30) + (30) + (86)

angle SPQ = 146 degrees

--------------

Another approach:

Notice that angles QPR and RPS add to 154+60 = 214 degrees, which is the piece just next to angle SPQ. Subtract from 360 to get:

360 - 214 = 146 degrees

Both the codes are wrong and the mistake had been pointed as follows:

1) I think in the first example, since i &lt; n; i++ is added to n only once and as long as there are less than n threads started, you have O(n^4), but it doesn't appear to work on my computer.

2) On my computer, i *= 2 gives O(n^5), but again this doesn't seem right.

In the first function, if you count the i *= 2 as adding n^2 to the complexity then multiplying by n and n for the 2 for loops, then take it apart into separate functions and average the runtime times that you've found out will be O(n^4).

In the second function, don't take it apart into separate functions as there is no need when you're using Big O notation.

Instead, just add up all of the line numbers between j <- k and use that to determine where each line is in your code.

O(n^4) and O(n^5) are at the same complexity level.If you think the way I do then your answer is correct and if you think like I think then your answer is correct.

big o notation for algorithms is really important, if we use big O notation and make sure we understand how to solve an algorithm.

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A probability distribution that indicates the probability of r successes in n trials is known as a) binomial distribution.

The correct answer is a) binomial. A binomial probability distribution is used to calculate the probability of a certain number of successes (r) in a given number of independent trials (n), where the probability of success in each trial is constant. The distribution is often used in statistics and probability theory to model real-world situations such as coin flips, product defects, or election results. The other terms mentioned in the question (subjective, joint, and marginal) are unrelated to binomial probability distributions. A probability distribution that indicates the probability of r successes in n trials is known as a) binomial distribution.

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Answer: The one on the bottom right.

Step-by-step explanation:

Symmetry is basically like a mirror. The line of symmetry is the exact point where it starts to reflect.

A symmetrical shape can also be folded onto itself equally.

Looking at the photo, the picture on the bottom right is the left part of the figure.

Answer:

Polygons are congruent when they have the same number of sides, and all corresponding sides and interior angles are congruent. The polygons will have the same shape and size, but one may be a rotated, or be the mirror image of the other. Note: This entry deals with the congruence of polygons in general.

Step-by-step explanation:

Answer: A polygon with an equal amount of sides.

Step-by-step explanation: I hope it helps. There is not an explanation to this answer.

Answer:

Step-by-step explanation:

Let's assume the initial number of men at the exhibition is 10x, and the initial number of women is 3x.

After 110 men left, the number of men remaining is 10x - 110.

The total number of people remaining is (10x - 110) + (3x) = 13x - 110.

According to the given information, the number of men remaining (10x - 110) is 5/12 of the total number of people remaining (13x - 110). We can write this as an equation:

10x - 110 = (5/12)(13x - 110)

To solve this equation, we can start by simplifying both sides:

10x - 110 = (65/12)x - (55/6)

To get rid of the fractions, we can multiply both sides of the equation by 12:

12(10x - 110) = 65x - 110(2)

120x - 1320 = 65x - 220

Next, we can bring the x terms to one side and the constant terms to the other side:

120x - 65x = 1320 - 220

55x = 1100

Dividing both sides by 55, we find:

x = 20

Now, we can substitute the value of x back into the initial expressions to find the number of men and women:

Number of men = 10x = 10(20) = 200

Number of women = 3x = 3(20) = 60

Therefore, there were 60 women at the exhibition

Hope this answer your question

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mark me ask Brainliest it helps a lot

The company will need 6π cubic inches of wax to make a single candle.

Given that the company makes wax candles in the shape of a cylinder, each candle has a diameter of 2 inches and a height of 6 inches.

Now, we need to find out how much wax will the company need to make candles.

The formula to find out the volume of a cylinder is given byπr²h,

where r is the radius of the circular base, h is the height of the cylinder and π is the mathematical constant (approx. 3.14159).

Here, Diameter of the cylindrical candle = 2 inchesTherefore, radius (r) of the candle = diameter / 2= 2 / 2= 1 inch

Height (h) of the candle = 6 inchesSubstitute the values of r and h in the formula for the volume of a cylinder and simplify to get,

Volume of the cylindrical candle = πr²h= π(1)²(6)= π(1)(1)(6)= 6π cubic inches

Therefore, the company will need 6π cubic inches of wax to make a single candle.

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In a tesselation of the plane with congruent equilateral triangles, each vertex is shared by six triangles.

This can be visualized by imagining a single equilateral triangle as the center, surrounded by six other equilateral triangles that share a common vertex with the central triangle. Therefore, in this type of tesselation, each vertex is surrounded by six neighboring triangles.

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Answer:

Perimeter square = 8 sqrt(pi)

Step-by-step explanation:

The perimeter of a square is 4*s

The area of a circle is Area = pi * r^2

The circumference of a circle is C = 2*pi * r

C = 4 pi

4pi = 2*pi * r

r = 2

So the area of the circle is pi * r^2 = pi * 2^2 = 4pi

The square has the same area

Area = 4*pi

Square = 4*pi

s^2 = 4*pi

s = sqrt(4*pi)

s = 2*sqrt(pi)

The perimeter = 4 * 2 * sqrt(pi)

The perimeter = 8 * sqrt(pi)

Answer: yes

Step-by-step explanation: think about it

Using complementary and supplementary angles, we have that:

c. The angles are complementary, hence the equation is 4x - 3 + 2x + 1 = 90 and the solution is x = 15.33.

d. The angles are supplementary, hence the equation is 43x + 16 + 110 = 180 and the solution is x = 18.

When the measures of two angles add to 90º, the angles are complementary.

This is the case in item c, hence:

4x - 3 + 2x + 1 = 90

6x = 92

x = 92/6

x = 15.33.

When the measures of two angles add to 180º, the angles are supplementary.

This is the case in item d, hence:

3x + 16 + 110 = 180.

3x = 54

x = 54/3

x = 18.

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