I don't understand this at all please help me

Answer:

The length of the radius is 7.74 ft.

Step-by-step explanation:

It is given that the length of arc is s=8.1 and central angle of arc is [tex]\theta=\frac{3.14}{3}[/tex] in radian.

The formula for arc length is

[tex]s=r\theta[/tex]

Where, s is length of arc, θ is central angle of arc in radian and r is the radius of the circle.

Substitute s=8.1 and [tex]\theta=\frac{3.14}{3}[/tex] in the above formula.

[tex]8.1=r\times \frac{3.14}{3}[/tex]

[tex]8.1=r\times 1.0467[/tex]

Divide both sides by 1.0467.

[tex]\frac{8.1}{1.0467}=r[/tex]

[tex]7.73860705073=r[/tex]

[tex]r\approx 7.74[/tex]

Therefore the value of r is 7.74 ft.

Solution of equqation 15 - 3 7/8 is 11 1/8.

To solve 15 - 3 7/8, you need to follow these steps:

First, convert 3 7/8 to an improper fraction:

Next, convert 15 to a fraction with a common denominator of 8:

Now you subtract the improper fraction from the whole number fraction:

Convert the result back to a mixed number:

So, 15 minus 3 and 7/8 is 11 1/8.

False,

 the equation should be

x+ (x+2) +(x+4) = 45

-8 + -7 +x

 add 7 to both sides

-1=x

so x = -1

Answer:

Step-by-step explanation:

100% = 1

202.98% is more than 100%, so is more than 1.

67.14% is less than 100%, so is less than 1.

F(n+1)=-0.5f(n)  120 f (5)

some people use 22/7, some use 3.14

 it is used in formulas for circles

To sketch the graphs, square the y-values of sin(x) and cos(x) to get f^2(x) and g^2(x), respectively. Then, add the squared y-values of f(x) and g(x) to get f^2(x)+g^2(x). Plot the points obtained for each function and sketch the graphs.

a) To sketch the graph of f^2, we need to square every y-value of the function f(x)=sin(x). This means finding the square of the sine of each angle. For example, f^2(0)=sin^2(0)=0^2=0. By repeating this process for multiple angles, we can plot the points and sketch the graph.

b) Similarly, to sketch the graph of g^2, we need to square every y-value of the function g(x)=cos(x). This means finding the square of the cosine of each angle. For example, g^2(0)=cos^2(0)=1^2=1. By repeating this process for multiple angles, we can plot the points and sketch the graph.

c) To sketch the graph of f^2+g^2, we need to add the squared y-values of f(x) and g(x) at each angle. For example, f^2+g^2(0)=sin^2(0)+cos^2(0)=0^2+1^2=1. By repeating this process for multiple angles, we can plot the points and sketch the graph.

The formula for a cone is given as:

V = π r^2 h / 3                    ---> 1

Where,

V = volume of the cone

r = radius of the circle base of the cone

h = is the perpendicular length from the center of the base of the cone to the tip at the top

It was given that:

h = d

but d = 2 r, therefore:

h = 2 r

Substituting this to equation 1:

V = π r^2 (2 r) / 3             

V = 2 π r^3 / 3

Since r = x, the answer from the choices is:

2πx3

The expression representing the volume of the cone is (2/3)πx^3, where x represents the cone's radius.

Step 1: Identify Key Information

We are given that the height (h) of the cone is equal to the diameter (d) of the base. The diameter is twice the radius (r).

Step 2: Apply Formula and Substitute

        Volume (V) = (1/3) * π * r^2 * h

        V = (1/3) * π * r^2 * (2r)

Step 3: Simplify the Expression

Answer:

The probability that it will land below the sixth step and heads up is [tex]\frac{1}{14}[/tex]

Step-by-step explanation:

Given : You accidentally dropped a coin from the top of 7 stairs.

To find : What is the probability that it will land below the sixth step and heads up?                                                        

Solution :

A coin has two sides - head and tail.

Probability of getting head is

[tex]P(H)=\frac{1}{2}[/tex]

Total stairs are 7.

Coin will land below the sixth step i.e. it land on 7th step.

So, Probability of landing coin on below the sixth step is

[tex]P(L)=\frac{1}{7}[/tex]

Now, The probability that it will land below the sixth step and heads up is

[tex]P=\frac{1}{2}\times \frac{1}{7}[/tex]

[tex]P=\frac{1}{14}[/tex]

Therefore, The probability that it will land below the sixth step and heads up is [tex]\frac{1}{14}[/tex]

A) #3 y = x+3, if you subtract x from y there is a difference of 3 in all of them.

B) #5 y = -x^2, the y value is the negative value of x raised to the 2nd power

C)#6 y = x^2+3, if you raise the value of x to the 2nd power and then add 3 you get the y value

D)#2 y=3x-1, if you multiply the value of x by 3 then subtract 1 you get the y value

Final answer:

To calculate the available farming land, 65% of the total 30 acres is determined, resulting in 19.5 acres available for farming.

Explanation:

To find out how many acres are available for farming, we need to calculate 65% of the total 30 acres of land the farmer owns.

The calculation is as follows:

Therefore, 19.5 acres of the farmer's land can be used for farming.

The Angelo family's car has a gas mileage of approximately 13.4 miles per gallon, calculated by dividing the total miles driven (254.6 miles) by the gasoline used (19 gallons).

A car's gas mileage is calculated by dividing the total number of miles driven by the amount of gasoline used. In this case, the Angelo family drove 254.6 miles and used 19 gallons of gasoline. So, to figure out their car's gas mileage, you would divide 254.6 miles by 19 gallons.

254.6 miles ÷ 19 gallons = 13.4 miles per gallon

Therefore, the gas mileage of the Angelo family's car is approximately 13.4 miles per gallon.

https://brainly.com/question/33812030

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Answer:

A) 5x^5 + 4x^4 + x^3

Step-by-step explanation:

opposite angles need to equal 180

 so angle 2 = 180-111 = 69 degrees

Answer:

180,000.

Step-by-step explanation:

Given  : 18 thousands times 10.

To find : Solve .

Solution : We have given

18 thousands times 10.

According to question :

18 thousand = 18000.

10 Times of 18 thousand .

18000 *10 .

180,000.

Number would be 180,000

Therefore, 180,000.

A = (1,3)

C = (-4,-4)

-4-1 =-5, -5@ = 25

-4-3 = -7, -7^2 = 49

25+49 = 74

 sqrt(74) = 8.602

 round answer as needed.