The circle below has a sector 120° shaded. 120° 22 Find the area of the shaded sector. Use π = 7 and give your answer correct to 1 decimal place.​

Answer:

Step-by-step explanation:



Using multiplication to solve the square roots, (5√3 -2)², we get the answer as 79 - 20√3

To multiply a square root, multiple its radicands first—that is, the values that appear after the radical sign. If the radical sign is preceded by any coefficients, multiply those coefficients as well.

Using (a-b)² = a² + b² - 2ab

We have,

(5√3 -2)²

On expanding,

we have , (5√3)² + 2² - 2(5√3)(2)

⇒ 75 + 4 - 20√3

⇒ 79 - 20√3

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Answer:

Step-by-step explanation:

Answer:

Yes, you did it correctly. Note that shape B is 3 bigger than shape A, so it has much larger dimensions and properties.

McKenzie is right and Cara is wrong.

a² + b² = c²

[The Pythagoras theorem a , b are the square edge)

Answer:

Step-by-step explanation:

the problem looks for the measure of the hypotenuse, which is the longest side of a right triangle, so it cannot be 12 in because we have a cathetus of 13 in, therefore, without making calculations but following a simple reasoning, the correct answer is McKenzie's , about 13.93, the only possible option

Answer:Gotta Be G tbh

Step-by-step explanation: Calculator on brainly

[tex]2^{10}.2^8.2^6.2^4.2^2.2^{-1}.2^{-3}.2^{-5}.2^{-7}.2^{-9}[/tex] = 32

We need to compute [tex]\bold{2^{10}.2^8.2^6.2^4.2^2.2^{-1}.2^{-3}.2^{-5}.2^{-7}.2^{-9}}[/tex] .

This is the product of exponential numbers with same bases.

We use rules of exponents:

Using the first rule we can rewrite

[tex]2^{10}.2^8.2^6.2^4.2^2.2^{-1}.2^{-3}.2^{-5}.2^{-7}.2^{-9}[/tex]

as,

[tex]2^{10+8+6+4+2}.2^{-1-3-5-7-9} = 2^{10+8+6+4+2}.2^{-(1+3+5+7+9)}[/tex]

Using the second rule,

[tex]2^{10+8+6+4+2}.2^{-(1+3+5+7+9)} = \frac{2^{10+8+6+4+2}}{2^{1+3+5+7+9} }[/tex]

                                            [tex]=\frac{2^{30}}{2^{25}}[/tex]

                                            [tex]\bold{= 2^5 = 32}[/tex]                        

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Step-by-step explanation:

The hypotenuse is the longest side of the right-angled triangle. The angle about which Julian is describing is ∠G.

Answer:

A. <G

Step-by-step explanation:

Took the test on edge, hope this helps

Answer:

Step-by-step explanation:

17.7 -> 177

19.1 -? ?

17.7177=19.1x

cross multiply

17.7x=19.1(177)

can you solve from there?

The cost to send 98 text messages will be $9.8.

What is mean by proportion?

A proportion is a fraction of a total amount, in which two ratios are set equal to each other.

Given that;

The cost of 177 text messages = $17.70

Now,

Since, The cost of 177 text messages = $17.70

So, The cost to send 98 text messages will be;

= $17.70 x 98 / 177

= $9.8

Thus, The cost to send 98 text messages will be $9.8.

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The expressions are:

1. 6h² - 4h - 2

2. 6c² + c - h +9

Algebraic expressions are expressions made up of constants, terms, coefficients and variables.

Given the expressions;

h² + 4h - 4

5h² - 8h + 2

Let's take the sum

h² + 4h - 4 + 5h² - 8h + 2

collect like terms

h² + 5h² + 4h - 8h - 4 + 2

6h² - 4h - 2

Let's subtract 3c - 5 from 6c² + 3c + 9

6c² + 3c + 9 - 2c - h

collect like terms

6c² + 3c - 2c - h +9

6c² + c - h +9

Hence, the expressions are 6h² - 4h - 2 and 6c² + c - h +9

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The Gerald ordered and ate more pizza than Sarah .

A fraction having whole numbers for the numerator and denominator. A fraction is a number of the form: ab where a and b are integers and b≠0. It represents the division of two numbers.

Given:

Gerald ordered a small pizza, divided into 8 equal slices and ate 3 of them.

Sarah also ordered a small pizza ,divided into 24 slices, and ate 6 of them.

According to given question we have

Gerald divided into 8 equal slices and ate 3 of them.

=3/8

Sarah divided into 24 slices, and ate 6 of them.

=6/24

=1/4

Multiply with 2 in both numerator and denominator we get,

=1*2/4*2

=2/8

∴3/8>2/8

So, Gerald ate more pizza.

Therefore, the Gerald ordered and ate more pizza than Sarah .

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The answer is 16.7 %.

The necessary calculation is below:

observations  Systolic(x)  Diastolic(y)  x^2      y^2

        1          120               79    14400 6241

         2          130               74    16900 5476

         3          157               75    24649 5625

         4          96               50     9216 2500

         5          156                89    24336 7921

         6         124               87    15376 7569

         7          116               59    13456 3481

         8          137               66    18769 4356

         9          124               71    15376 5041

        10          118               81     13924 6561

       sum         1278      731   166402 54771

For Systolic (x)

mean= sum(x)/10 = 1278/10 = 127.8

stdev= s =sqrt( (sum(x^2 - 10*127.8^2)/9) = sqrt ( (166402 - 10*127.8^2)/9) =18.48

So coefficient of variation ( systolic)  is = (stdev/mean )*100 = (18.48/127.8)*100 = 14.5 %

For Diastolic (x)

mean= sum(y)/10 = 731/10 = 73.1

stdev= s =sqrt( [tex](sum(x^2 - 10*73.1^2)/9) = sqrt ( (54771 - 10*73.1^2)/9)[/tex]= 12.18

so coefficient of variation ( systolic)  is = (stdev/mean )*100 = (12.18/73.1)*100 = 16.7 %

Here, systolic is less varied than the diastolic.

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Recursive expressions are ways of expressing sequence using functions. The fifth term of the recursive sequence is 405.

Recursive functions are ways of expressing sequence using functions.

Given the following recursive functions

a₁=5 and;

aₙ = -3aₙ₋₁

For the second term;

a₂ = -3a₁

a₂  = -3(5)

a₂  = -15

For the third term a₃

a₃ = -3a₂
a₃ = -3(-15)

a₃ = 45

For the fourth term

a₄ = 3a₃

a₄ = 3(45)

a₄ = 135

For the fifth term

a₅ = 3a₄

a₅ = 3(135)
a₅ = 405

Hence the fifth term of the recursive sequence is 405.

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Answer:

Hey there, your domain is all real numbers!! the graph is staying above the x-axis, but it's crossed from the negative x-values to the positive x-values. that means choice D is incorrect, because some of the function does cross through negative values.

if the domain was either of the inequality choices, the function wouldn't extend all over the graph--it would be ONLY between 0 and 5, or 5 and -5. this graph would be all real numbers because it isn't restricted like that.

Hope this helps!!!

The factors of the given Quadratic Equation 2x² - x - 120 = 0 is 8 and -15/2.

What are zeros ?

zeros denotes the factors of the given equation in other words the zeros of the function are the values that make the factors zero. The factors need to multiply out to give the original standard-form equation.

Polynomial roots are the same as polynomial zeros, so they can be found by factoring the quadratic equation into two linear factors, after which they can be equating to zero.

Now, considering the given Quadratic Equation to find x :

2x² - x - 120 = 0

writing the above equation into two linear factors as :

2x² - 16x + 15x - 120 = 0

2x(x-8) + 15(x-8) = 0

(x-8)(2x+15) = 0

Now, equating each linear equation to zero to find the factors:

(x-8) = 0 and (2x+15) = 0

x = 8 and x = -15/2.

Therefore, the factors of the given Quadratic Equation is 8 and -15/2.

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The simplified value of radical expression √81 x² is 9x.

By considering the given expression

√81 x²

=(9²)^1/2 ( x²)^1/2

=9x

An expression with a square root is referred to as a radical expression. Radicand: A value or phrase contained within the radical symbol. Equation with radical expressions and variables as radicands is referred to as a radical equation.

The 'V'-shaped portion of the radical symbol will have a superscript number when it is used to represent any root other than a square root. For instance, the expression 3(8) denotes the cube root of 8.

The radical symbol, which resembles a check mark, the index, a small number written outside the radical symbol, and the radicand, a quantity written beneath the horizontal bar of the radical symbol, are the three main components of the radical expression ab.

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The part from the expression above that represents a coefficient is -4.9

The expression is given as

-4.9t^2

To solve this question, we make use of the following illustration.

Let an expression be represented as

ax^n

Where the variable is n

In the expression

Coefficient = a

Variable = x

Power = n

Using the above as a guide, the part from the expression above that represents a coefficient is -4.9

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The population of City C is 11.4 times the population of City A.

From the information, the populations of cities A and B are 3.6*10 to the 5 and 2,060,000, respectively

It was stated that the population of City C is twice the population of City B. That means the population of C will be:

= 2060000 × 2

= 4120000

Therefore, the population of City C is how many times the population of City A will be:

=4120000 / 360000

= 11.4

Therefore, the population of City C is 11.4 times the population of City A.

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Answer: 6.57x10^3

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

Hope this helped :)

Answer:

The maximum height that the rocket will reach is 271 feet.

Step-by-step explanation:

We first calculate the time, t it takes the rocket to reach maximum height from v = u - gt. Since u = initial velocity = 128 ft/s, v = velocity at maximum height = 0  ft/s and g = acceleration due to gravity = 32 ft/s².

So, v = u - gt.

t = (u - v)/g

= (128 ft/s - 0 ft/s)/32 ft/s²

= 128 ft/s ÷ 32 ft/s²

= 4 s.

We calculate the maximum height from

y - y₀ = ut - 1/2gt² where y₀ = 15 ft and all other variables are as above.

Substituting these values into the equation, we have

y - y₀ = (u - 1/2gt)t

y - 15 ft = (128 ft/s - 1/2 × 32 ft/s² × 4 s) × 4 s

y - 15 ft = (128 ft/s - 64 ft/s)4 s

y - 15 ft = 64 ft/s × 4 s

y - 15 ft = 256 ft

y = 256 ft + 15 ft

y = 271 ft

So, the maximum height that the rocket will reach is 271 feet.

Step-by-step explanation:

The new exponent for the power of 10 after rewriting the number correctly in scientific notation would be 1.45 × 10^7

The number is written in the form  [tex]a \times 10^b[/tex]where we have  [tex]1 \leq a < 10[/tex]

The number b shows the order, which is the most important figure for which scientific notation is used. It tells us how much order large or small a value is in powers of 10. We can for a time, ignore the value of 'a' for two comparable quantities and only compare their orders(this type of comparison is useful when difference is too big, like size of human to size of a star etc sort of comparisons).

The scientific notation is value in terms of power of 10 is known, which helps in easy comparison of quantities differing by a large value.

We have been given that number below is not correctly written in scientific notation.

145 × 10⁵

Therefore, new exponent would be 1.45 × 10^7

Hence, The new exponent for the power of 10 after rewriting the number correctly in scientific notation would be 1.45 × 10^7

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The required function will be

y= 500-10x

function, in mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).

let amount of money = x and

number of remaining candy =y

total 500 remaining candies= total 10x amount of money

y= 500-10x

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Function operations are the rules we use to solve functions. There is a specific way to deal with function addition, subtraction, multiplication, and division.

-x² + 3x +3 is the domain of all real numbers.

Function operations are the rules we use to solve functions. There is a specific way to deal with function addition, subtraction, multiplication, and division.

Let the two functions be f and g then f(x) = 3x - 2 and g(x) = x² + 1.

we have to calculate (f - g)(x)

Which is equivalent to:

(f - g)(x) = f(x) - g(x)

Taking the two functions and substituting them into this expression, we get,

f(x) - g(x) = (3x - 2) - (x² + 1)

simplifying the above function, we get

f(x) - g(x) = 3x - 2 - x² - 1

(f - g)(x) = -x² + 3x - 2 - 1

Therefore, (f - g)(x) = -x² + 3x +3

We must also determine the domain of the new function. However, because this is a second-order function with no denominators, logarithms, or roots, there are no restrictions on the value of x; thus, the domain is all real numbers.

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Answer:

: A person driving along the road moves at a rate of 56 miles per hour driven.

Step-by-step explanation:

The minimum value is 20

The maximum value is 9

The range is 11.

The mean is 16.8

The median is 18.

The mode is 18.

The landmark that best describes the dot plot is the mean because it incorporates all the data in the dotplot.

A dot plot is a graph that displays the information of a dataset. A dot plot consists of a number line and dots above the numbers on the number line. The dots in the dot plot is indicate the frequency of the data in the dataset.

The minimum value is the smallest number in the dataset. The smallest number that is represented in the dot plot is 9. The maximum value is the largest number in the dataset. The largest number that is represented in the dot plot is 20.

The range is the difference between the maximum value and the minimum value.

Range = maximum value - minimum value

20 - 9 = 11

The mean is the average of he numbers in the dataset.

Mean = [(9 x 1) + (12 x 1) + (14 x 1) + (15 x 5) + (16 x 2) + (17 x 3) + (18 x 6) + (19 x 3) + (20 x 4)] / 26

438 /26 = 16.8

The mode is the number that occurs most in the dataset. The number that occurs most frequently is 18 with a dot of 6.

The median is the number at the center of the dataset. The median is 18.

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The inverse of the function y = log(x₊1) is f ⁻¹(x) = 10ˣ ₋ 1.

Given the function is :

y = log(x₊1)

we are asked to find the inverse of the function.

steps to find inverse function are:

now interchange the positions of x and y in the function.

x = log₁₀ (y ₊ 1)

the next step is to isolate the dependent variables.

f ⁻¹(x) = ₋1 ₊ 10ˣ

f ⁻¹(x) = 10ˣ ₋ 1

hence, we get the inverse of the given function as f ⁻¹(x) = 10ˣ ₋ 1.

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If the allocation doubles every week, that represents exponential growth.

Given there are many types of growth models, and models that grow at a constant rate are linear and models that grow exponentially at an increasing rate.

Linear growth is characterized by growth by the same amount per unit  time.

Exponential growth is a process of increasing numbers over time. This happens when the instantaneous rate of  change of a quantity over time is proportional to the quantity itself.

Exponential growth because the first week you may only get a dollar, but  the next week you get 2, then 4, and so on. Your allowance doesn't grow by the same amount every week, so the number it doubles is exponential.

Therefore, if the allowance doubles every week, it represents a exponential growth multiplier because samples growing at a constant rate are linear.

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