Can someone please help me with this

Answer:

18\(\pi\)

\(\frac{80}{360} * 81 \pi\)

Step-by-step explanation:

Answer:

x=60

Step-by-step explanation:

this is an isosceles triangle. so angle D and F are equal. D= x and F=x. so 58+x+x=180

2x+58=180

2x=122

x=60

Answer:

To subtract integers, change the sign on the integer that is to be subtracted. If both signs are positive, the answer will be positive. If both signs are negative, the answer will be negative. If the signs are different subtract the smaller absolute value from the larger absolute value

Answer:

y = 3

Step-by-step explanation:

We need to solve the below proportion in this problem,

\(\dfrac{9}{2}=\dfrac{27}{2y}\)

First of all, we cross multiply both sides such that,

\(9\times 2y=27\times 2\\\\18y=27\times 2\)

Dividing both sides by 18.

\(y=\dfrac{27\times 2}{18}\\\\y=3\)

For the above proportion, we find that the value of y is equal to 3.

Answer:

RNA and Clyboromes

Step-by-step explanation:

I Am A College Major at UOF in Florida

Probably in your textbooks

Mark me brainliest please!!!

The length of the side CD of the triangle is 12.686 cm up to 3 significant figures.

We know from the information that

AB = 6cm AC = 12cm

Now we have to calculate the length of DC

From given figure, we have,

In Δ ACB,

CA² = BA² + BC² (By using Pythagoras theorem)

12² = CB²+ 6²

CB² = 12² - 6²

CB² = 144 - 36

CB² = 108

∴ BC = √( 108) cm.

Now consider, in Δ CBD,

as, we know that from trigonometric ratios , sin x = opposite side / hypotenuse

sin 55° = BC / DC

0.81915 = √108 / DC

DC = 10.392 / 0.81915

⇒ DC = 12.68632...

∴ DC ≈ 12.686 cm

Therefore the length of the side DC is approximately 12.686 cm up to 3 significant figures.

Disclaimer: The missing image of the triangle is attached below.

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x:y=0.75:0.90

Here,

Dividing by the value of y=0.90,

x:y=0.75/0.90:0.90/0.90

=5/6:1

Similarly,

y:z=1/3:1/4

Dividing by 1/3,we get,

y:z=1:3/4

Now,

X:y:z=5/6:1:3/4

Multiplying by both value of y,0.90×1/3=3/10

x:y:z=5/6×3/10:1×3/10:3/4×3/10

By solving this,

x:y:z=1/4:3/10:9/40Answer:

Step-by-step explanation:

Answer:

45

Step-by-step explanation:

All angles of a triangle should add up to 180

35 + 80 + 45 = 180

The sοlutiοn tο the inequality is all values οf x greater than -10. This can be represented οn a number line as shοwn in the figure attached.

A cοnnectiοn between twο expressiοns οr values that is nοt equal in mathematics is referred tο as inequality. Hence, inequity results frοm imbalance. In mathematics, an inequality establishes the cοnnectiοn between twο nοn-equal numbers. Equality and inequality are nοt the same.

Use the nοt equal symbοl mοst frequently when twο values are nοt equal (). Values οf any size can be cοntrasted using a variety οf inequalities.

By changing the twο sides until just the variables are left, many straightfοrward inequalities may be sοlved.

Nοnetheless, a variety οf factοrs suppοrt inequality: Bοth sides' negative values are split οr added. Exchange the left and the right.

5x - 15 + 15 > -65 + 15

5x > -50

5x/5 > -50/5

x > -10

Because the inequality is severe, the οpen circle at -10 shοws that it is nοt part οf the sοlutiοn set (i.e., x must be greater than -10, nοt greater than οr equal tο -10).

The right arrοw shοws that the sοlutiοn set gοes οn fοrever in that directiοn.

Hence, the sοlutiοn tο the inequality is all values οf x greater than -10. This can be represented οn a number line as shοwn in the figure attached.

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Answer:

(4,3)

Step-by-step explanation:

f(x) = a(x-h)^2 +k is the vertex form of a parabola

where (h,k) is the vertex

f(x) = (x-4)^2 +3

    yields a  vertex of (4,3)

Answer: The answer is A 4,3

Step-by-step explanation:

Answer:

Positive, Linear, Strong, no

Step-by-step explanation:

I got it right :)

Answer: The relationship between height and vertical jump distance is negative positive, linear, and strong.

There are no unusual observations.

Step-by-step explanation:

Edge

Answer:

its 7/8

Step-by-step explanation:

Answer:

7/8

Step-by-step explanation:

An expression is defined as a set of numbers, variables, and mathematical operations. The sum of three and the square root of a number is expressed as 3 + √x.

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

Let the unknown number be represented by x.

1.) The sum of three and the square root of a number.

3 + √x

2.) Nine less than a number cubed.

x³ - 9

3.) The quotient of a number and 7.

x ÷ 7

4.) Four times a quantity plus five.

4x + 5

Hence, The sum of three and the square root of a number is expressed as 3 + √x.

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Answer:

11.4

Step-by-step explanation:

Distance Formula: \(d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2\)

1. \(d=\sqrt{(-4-5)^2+(-3-4)^2}\)

2. \(d=\sqrt{(-9)^2+(-7)^2}\)

3. \(d=\sqrt{81+49}\)

4. \(d=\sqrt{130}\)

5. \(d=11.4017\)

6. \(d=11.4\)

Answer:

Length is greater than width, So your question is wrong I think.

Answer:

x = -6

Step-by-step explanation:

Answer:

\(x=\frac{39}{2}\)

Step-by-step explanation:

\(\frac{2x-3}{4}=9\\ \\2x-3=36\\\\2x=39\\\\x=\frac{39}{2}\)

Answer:

its the third one

Step-by-step explanation:

1.7x10^9

take care

-tired kitten

who wants to rest forever

The total number of lists that can be made with following symbols is 479001600 and 362880 of the lists contain the word "back" in that order.

There are 12 symbols in the given set.

the number of ways it can be arranged such that no symbol is repeated is 12! ways.

so we find 12! = 479001600

Now the words back can only be found as a set so taking the word back as 1 unit we get 9 units.

Number of ways = 9! = 362880

Combinations and selections are synonymous terms. Combinations are the results of selecting elements from a set assortment. Nothing specific is being organized here. We are choosing them. The number of unique r-selections or combinations among a set of n objects is denoted by the symbol nCr.

The number of distinct groups of r objects that can be made from the given n unique objects can be easily calculated using the combinations formula.

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here is pictrues

i dont understand number 3

plz mark me brainlest

# 4

To begin solving for the total cost of the paint that Ariana needs to buy, we first need to calculate the size of the walls and the ceiling that she is going to paint.

We begin by finding the size for the walls.

We use the formula  to find the area of each wall.

We know that the walls are 10-foot squares.

10 x 10 = 100 Square Feet

Each wall will have an area of 100 square feet each, we know that there are 4 walls in the shed.

100 x 4 = 400 Square Feet of walls to paint total.

Now we know that the ceiling will have the same area as the walls.

10 x 10 = 100 Square Feet of ceiling to paint.

Now Ariana goes to the store and finds that a gallon of paint cover 350 square feet. Ariana needs to paint a total of 400 square feet of wall.

400 - 350 = 50 Square Feet remains.

We know that she needs to buy the paint in gallons, so this leaves Ariana with purchasing 2 gallons of Blue paint.

Now Ariana also wants to paint the ceiling white. We know that 1 gallon of White paint is more than enough to cover the ceiling, but she still needs to buy the gallon of paint.

Now we add up all the prices of the 3 gallons of paint.

$26.98 x 2 = $53.96 for Blue Paint

$26.98 x 1 = $26.98 for White Paint

Total cost = $80.94.

Now we know that the sales tax is 5.5% of the total price.

$80.94 x 0.055

Sales Tax = $4.45

Now we simply add the total cost to the sales tax.

$80.94 + 4.45

Total cost with sales tax = $85.39

Hence, the worker is least productive at 10 a.m. and 2 p.m.

We have four functions as given below:O f(x) = 2 sin(0.5x) - 11 = Of(x) = 8 cos(2x) - 4 = O f(x)= 7 cos(x) + 13 O f(x) = 6 sin(3x) + 20

To determine which of the above functions has the longest period, we will use the formula to calculate the period of a function:

Period (T) = 2π / b1) O f(x) = 2 sin(0.5x) - 11

In this function, b = 0.5

Period (T) = 2π / b = 2π / 0.5 = 4π2) O f(x) = 8 cos(2x) - 4

In this function, b = 2

Period (T) = 2π / b

= 2π / 2

= π3) O f(x)

= 7 cos(x) + 13

In this function, b = 1

Period (T) = 2π / b

= 2π / 1

= 2π4) O f(x)

= 6 sin(3x) + 20

In this function, b = 3

Period (T) = 2π / b

= 2π / 3

The function with the longest period is O f(x) = 2 sin(0.5x) - 11.

The productivity of a person at work on a scale of 0 to 10 is modeled by a cosine function: 5 cos + 5, where t is in hours. If the person starts work at t = 0, 2t being 8:00 a.m.

The cosine function for this productivity is given by:

P (t) = 5 cos(πt) + 5At t = 0, the worker starts his job, and 2t is 8:00 a.m.

T = 2π / b

= 2π / π

= 2

We can see that the worker is unproductive every 2 hours. We can determine the hours that he/she is least productive by adding 2 to the starting time (0) and multiplying the result by the period

(2).We get 0 + 2(2)

= 4 and 4 + 2(2)

= 8.

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In conclusion for a. If the system is homogeneous , every solution is trivial true. b. If there exists a trivial solution, the system is homogeneous false. c. If there exists a nontrivial solution, there is no trivial solution false.

How to solve?

a. If the system is homogeneous, every solution is trivial.

This statement is true. A homogeneous system of linear equations has the form Ax = 0, where A is the coefficient matrix and x is the vector of variables. The trivial solution is always x = 0, which satisfies the equation. Any other solution would require a nonzero x vector, but then Ax would be nonzero, contradicting the fact that it equals zero in a homogeneous system.

b. If there exists a trivial solution, the system is homogeneous.

This statement is false. A system of linear equations can have a trivial solution (i.e., all variables are equal to zero) without being homogeneous. For example, the system

x + y = 0

2x + 2y = 0

has a trivial solution (x = 0, y = 0) but is not homogeneous.

c. If there exists a nontrivial solution, there is no trivial solution.

This statement is false. A homogeneous system of linear equations can have both trivial and nontrivial solutions. For example, the system

x + y = 0

2x + 2y = 0

has both a trivial solution (x = 0, y = 0) and a nontrivial solution (x = 1, y = -1).

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From the given Venn diagram, the value of  M∩N={4,7}.

A Venn diagram is a prominent diagram type that depicts the logical relationship between sets. It was popularized in the 1880s by John Venn (1834-1923). The diagrams are used to teach elementary set theory and to show simple set relationships in probability, logic, statistics, linguistics, and computer science. To depict sets, a Venn diagram uses basic closed curves drawn on a plane. These curves are almost often circles or ellipses.

Before Venn, similar concepts had been presented. Similar ideas were proposed by Christian Weise in 1712 and Leonhard Euler (Letters to a German Princess) in 1768. Venn popularized the concept in Symbolic Logic, Chapter V "Diagrammatic Representation," 1881.

The intersection of two sets is the set of all the elements that are shared by both.

M={4,7,9,3}

N={4,7,6}

Because M and N share the numbers 4 and 7, M∩N={4,7}.

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Answer:

carret answer is :b

Step-by-step explanation:

the between-group variation is larger than your within-group variation

This output shows the counts of each character in the string "hello world". The letter 'l' appears 3 times, the letter 'o' appears 2 times, and so on.

Here's an example Python function called count_characters that counts the number of times each character appears in a user-supplied string s:

def count_characters(s):

Given a string s, returns a dictionary containing the count of each character in the string.

char_count = {}

for char in s:

if char in char_count:

char_count[char] += 1

else

char_count[char] = 1

return char_count

This function creates an empty dictionary called char_count to store the counts of each character. It then loops through each character in the string s and checks if it's already in the char_count dictionary. If it is, it increments the count for that character. If it's not, it adds the character to the dictionary with a count of 1. Finally, the function returns the char_count dictionary.

You can call this function like this:

string = "hello world"

char_count = count_characters(string)

print(char_count)

Output:

python

{'h': 1, 'e': 1, 'l': 3, 'o': 2, ' ': 1, 'w': 1, 'r': 1, 'd': 1}

This output shows the counts of each character in the string "hello world". The letter 'l' appears 3 times, the letter 'o' appears 2 times, and so on.

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The solution is,

1.   a, 99%       b71%

2. 64%, 44%

3. Number of particles   0, 1, 2, 3, 4,  5, 6, 7,  8, 9, 10, 11, 12, 13, 14

frequencies:                 1, 2, 3, 12, 11, 15, 18, 10,  12, 4, 5, 3, 1, 2, 1

Relative frequencies  0.01, 0.02,0.03,0.12,0.11,0.15, 0.18,0.1, 0.12,0.04,                        0.05,0.03,0.01,0.02,0.01

A histogram is an approximate representation of the distribution of numerical data.

here, we have,

Number of particles: 0, 1, 2, 3, 4, , 5, 6, 7

Frequency: 1, 2, 3, 12, 11, 15, 18, 10

Number of particles: 8, 9, 10, 11, 12, 13, 14

Frequency: 12, 4, 5, 3, 1, 2, 1

we solve by saying that  . one of th smaples wafer is with  any particles. we get the proportion by subtracting 1 from the total  divided by 100

100-1/100

.99

at least five particles , then we can subtract the number of those with particles less than five from 100 , divided by 100

100-(11+12+3+2+1)=71/100

0.71 or 71%

b. those particles within 5 and 10 inclusive

15+18+10+12+4+5=64/100

0.64

0r 64%

five and 10 exclusively will be

18+10+12+4=44/100

0.44

44%

c. Draw an histogram. first we have frequency table first

Number of particles    0, 1, 2, 3, 4,  5, 6, 7,  8, 9, 10, 11, 12, 13, 14

frequencies:                 1, 2, 3, 12, 11, 15, 18, 10,  12, 4, 5, 3, 1, 2, 1

Relative frequencies  0.01, 0.02,0.03,0.12,0.11,0.15, 0.18,0.1, 0.12,0.04,                        0.05,0.03,0.01,0.02,0.01

Relative frequencies is derived by dividing each frequencies over the total frequencies

we can say that it is unimodal or say that it is slightly positively skewed

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29x=5

To find g o f(x), we need to replace each x in g(x) for f(x), this is:

Its domain must contain the numbers that make the function be real. In this case the function can be indefinite when having a negative root, it means that the domain of this function is:

Do the same procedure to find f o g(x):

The domain of this function is: