What’s the correct Answer answer asap for brainlist please

Given:

Diameter = 20 in

Find-:

Area of circle

Explanation-:

The area of circle is:

The radius of circle is:

Where,

So the radius of given circle is:

The area of circle is:

So, the area of a circle is 314.2

The question says we are to check the options that are equal

Using the law of indices

So we will check all the options(applying the laws of indices)

The first option is

yes, the first option is equivalent

We will move on and check the second option

Yes the second option is equivalent

We will move on to check the third option

No the third option is not eqquivalent to the question

We will move to tthe next option, fourth option

yes this option is equivalent to the fraction

Moving on to the fifth option

No the fifth option is not equivalent to the question

For statement one:

We need to add up to complex numbers and their sum must give us equal to 10.

Also, we need to use the complex numbers:

5+i√15 and 5-i√15.

Then, we can use:

(5+i√15)+( 5-i√15) =

5+i√15+5-i√15 =

5+5+ i√15-i√15 =

= 10 + 0

= 10

For the second statement:

We need to show the product of complex numbers:

Then, we use:

(5+i√15)(5-i√15))=

5*5 - 5*i√15) +5*i√15) +√15*√15=

25 + 0 + 15=

40

To solve our question, first we need to know that a prime factorization is a way to represent a number by a sequence of prime numbers that multiplied together gives us the original number.

So let's calculate our first prime factorization:

As we can see, we divide our number by the smallest prime number and then the factor we follow the same rule until we get "1" (for all divisions we just have integers).

Now, for the second number we have:

And both prime factorizations are our final answers.

Given the expression

express in sen and cos terms

then the correct answer is option C

Cos (angle)

We have that, for any triangle, the sum of all its angles equals 180. In this case, we have the following:

Now we solve for x to get the following:

We have that x = 24, now to find the angles, we substitute this value on each expression:

therefore, the remaining angles are 48° and 36°

Answer:

B. 1

Explanation:

Given the inequality:

To find the critical number, first, change the inequality sign to the equality sign :

Next, solve for x:

Therefore, from the options, 1 is the critical number.

The correct option is B.

Answer: Width =14, Length = 18

Step-by-step explanation:

L = W + 4

2W + 2L = 64

W+ L = 32

2W+ 4 = 32

2W = 28

W = 14

In order to have a linear function, the rate of change needs to be the same in each point

For

(-18,2)=(x1,y1)

(-14,4)=(x2,y2)

for

(-14,4)=(x1,y1)

(-12,5)=(x2,y2)

for

(-12,5)=(x1,y1)

(0,12)=(x2,y2)

as we can see here are the two numbers so we will obtain the equation in order to know the number that needs to be change

therefore if x=0

the number we need to change is 12 and need to be changed for 11

(0,11)

a. The number that needs to be changed in order to create a linear function is 12

b. That number needs to be changed to 11 in order for the function to be linear

The distance traveled by airplane is 180 miles.

The speed of the airplane is 3 miles per minute and the angle of direction from the origin is 51.34°

The airplane landed 100 miles north and 80 miles east from its origin and it flew for one hour.

Then, the total distance traveled by airplane will be:

= 100 miles + 80 miles = 180 miles.

The speed can be defined as the distance traveled by the total time taken.

Speed = distance/time

Speed = 180 miles/ 1 hour

Speed = 180 miles/60 minutes

Speed = 3 miles per minute

The angle of direction from its origin will be:

tan (x) = 100 miles/80 miles

x = tan⁻¹ ( 100/80)

x = tan⁻¹ ( 10/8) =  tan⁻¹ ( 5/4)

x = 51.34°

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a)The vertex of the function is (3, -1)

b)The line of symmetry is  x= 3

c) The maximum is no maximum and  minimum is  (3, -1)

a) What is the vertex of the function of the parabola ?

[tex]f(x) = x^{2} -6x+8[/tex]

Transforming the function in the vertex form,

[tex]f(x) = a(x-h)^{2} +k[/tex]

[tex]f(x)=(x-3)^{2} -1[/tex]

The vertex of the function  is given by,

(h, k) =  (3, -1)

So ,the vertex of the function of the parabola is (3, -1)

b) What is the line of symmetry in the function?

In a parabola , the axis of symmetry  is x = h.

Here, x = 3

So, the line of symmetry of the function of the parabola is x= 3

c) What is the maximum and minimum?

What is a function of a parabola?

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Given:

Required:

We need to find the value of AB

Explanation:

Here ABC is the right anglr triangle

so

Final answer:

The minimum length of crease is

Create a quadratic function in one of the forms and show how to convert it to the other two forms.

Step-by-step explanation:

1) Standard form: y = ax2 + bx + c where the a,b, and c are just numbers.

2) Factored form: y = (ax + c)(bx + d) again the a,b,c, and d are just numbers.

3) Vertex form: y = a(x + b)2 + c again the a, b, and c are just numbers.

The vertex of the parabola is written as (h, k) where b is the x - coordinate and c - is the y - coordinate

The confidence interval for the mean score of the 30 randomly selected students is: 99% CI {78.26, 89.73}

Confidence interval is the range of values for which which is expected to have the values at a certain percentage of the times.

Given data form the question

99% confidence interval

30 randomly selected students

mean sample = 84

Standard deviation = 12.2

Definition of variables

confidence level, CI = 99%

mean sample, X = 84

standard deviation, SD = 12.2

Z score, z = 2.576

sample size, n = 30

The formula for the confidence interval is given by

[tex]CI=X+Z\frac{SD}{\sqrt{n} }[/tex]    OR    [tex]CI=X-Z\frac{SD}{\sqrt{n} }[/tex]  

[tex]=84+2.576\frac{12.2}{\sqrt{30} }[/tex]

=[tex]=84+2.576*2.2274[/tex]

= 84 + 5.7378     OR       84 - 5.7378

= 89.7378           OR        78.2622

=  89.73 to 78.26  

The confidence interval for the mean score of all students is 78.26 to 89.78

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There is quadrilateral, means it has 4 lines

Is a rhombus

Value of x and y are -51 and 8 respectively

What is Algebra?

One of the many branches of mathematics is algebra. Algebra, which is a common thread throughout practically all of mathematics, is broadly defined as the study of mathematical symbols and the rules for using these symbols in formulas.

Let,

X+27+32 = 8

X+ 3y +32 = 10

X + 2y +42 = 9

Be, equation 1, 2 and 3 respectively

X+27+32 = 8 -----(1)

X+ 3y +32 = 10 -----(2)

X + 2y +42 = 9 -----(3)

From equation we can find the value of x

X+27+32 = 8

X + 59 = 8

X = 8 - 59

X = - 51

Substituting the value of x in equation 3

X + 2y +42 = 9

(-51) + 2y + 42 = 9

-51 + 42 + 2y = 9

-9 + 2y = 9

2y = 9 + 9

2y = 18

y = 18/2

y = 9

Hence, the value of x = -51 and y = 9

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The output values of f(-3), f(0) and f(2) of the function f( x ) = 5x - 2 are -17, -2 and 8 respectively.

A function is simply a relationship that maps one input to one output.

Given the data in the question;

For f( - 3 );

To find the output value of f( -3 ), replace all the occurrence of x with -3 in the function and simplify.

f( x ) = 5x - 2

f( -3 ) = 5(-3) - 2

f( -3 ) = -15 - 2

f( -3 ) = -17

For f( 0 );

To find the output value of f( 0 ), replace all the occurrence of x with 0 in the function and simplify.

f( x ) = 5x - 2

f( 0 ) = 5(0) - 2

f( 0 ) = 0 - 2

f( 0 ) = -2

For f( 2 );

To find the output value of f( 2 ), replace all the occurrence of x with 2 in the function and simplify.

f( x ) = 5x - 2

f( 2 ) = 5(2) - 2

f( 2 ) = 10 - 2

f( 2 ) = 8

Therefore, the output value of f( 2 ) is 8, this forms an ordered pair of ( 2, 8 ).

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The Solution:

Given:

By formula,

From the z-score tables:

Convert to percent by multiplying with 100.

Thus, the number of people that have an IQ score less than 90 is 25.25%

Therefore, the correct answer si 25.25%

Answer:

0.6m

Explanation:

Given the following

Total distance covered = 98m

pi = 3.14

Circumference of the wheel is the distance travelled in one rotation. Hence;

distance travelled in one rotation = \pi d

d is the diamter of the wheel

distance travelled in 49 rotation = 49*\pi d

Since distance travelled in 49 rotation = 98m, then;

98 = 49*\pi d

Divide both sides by 49

98/49 = \pi d

2 = 3.14d

d = 2/3.14

d = 0.6m

Hence the diameter of the wheel is 0.6m

We are given two functions:

h(x) = x^2 + 1

and k(x) = x - 2

We are asked to find the value of:

(h - k) (3) (the value of the difference of the two functions at the point x = 3

So we performe the difference of the two functions:

(h - k) (x) = x^2 + 1 - (x - 2) = x^2 + 1 - x + 2 = x^2 - x + 3

So, this expression evaluated at 3 gives:

(h-k)(3) = 3^2 - 3 + 3 = 9

One could also evaluate what was asked by evaluating each function independently and subtracting the results of such evaluation:

h(3) = 3^2 + 1 = 10

k(3) = 3 - 2 = 1

Then, the difference is : h(3) - k(3) = 10 - 1 = 9

So use whatever method feels more comfortable for you.

If x is uniformly distributed over the interval [ a , b ] then,

Also ,

It is given that ,

Therefore,

(a)The distribution is as follows :

(b)The mean is calculated as,

Standard deviation is calculated as,

(c) The probability is calculated as,

(d) The probability is calculated as,

a) The probability of losing money when standard deviation is 5% is 2.27%

b) The probability of losing money when standard deviation is 10% is 15.87%

Given,

There is an investment whose return is normally distributed.

The mean of the distribution = 10%

The standard deviation of the distribution = 5%

a) We have to determine the probability of losing money:

Lets take,

x = -0.005%

Now,

P(z ≤ (-10.005 / 5) ) = P(z ≤ - 2.001) = 0.02275

Now,

0.02275 × 100 = 2.27

That is,

The probability of losing money is 2.27%

b) We have to find the probability of losing money when the standard deviation is 10%

Let x be 0.01%

Now,

P(z ≤ (-10.01/10)) = P(z ≤ -1.001) = 0.15866

Now,

0.15866 × 100 = 15.87

That is,

The probability of losing money is 15.87%

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Given

$152,000

52% assessment rate

$48 per $1,000

Procedure

First, let's calculate the assessment rate.

Now let's calculate the taxes

Property taxes are equal to $3,793.92.

Answer:

The coefficients of the terms in the algebraic expression are 1 and -3

Explanation:

The coefficients are the number that multiplies an algebraic term in an algebraic expression.

for example; the coefficient of 3x is 3.

For the question;

given the expression;

The coefficient of x^2 is 1

while the coefficient of x is -3

Therefore, the coefficients of the terms in the algebraic expression are 1 and -3

I must earn at least $625 (or more) per week before tax to pay my bills.

Given,

To make $500 per week after tax in order to pay all my bills.

and, The income tax is 20%

To find the  smallest pre-tax weekly .

Now, According to the question:

Let x be the amount to earn pre - tax.

The income tax is 20% = 20/100 = 0.2

Set up an inequality:

x - 0.2x > = 500

0.8 > = 500

x >= 500/0.8

x >= 625

Hence, I must earn at least $625 (or more) per week before tax to pay my bills.

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Remember that

The compound interest formula is equal to

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest  in decimal

t is the number of Time Periods

n is the number of times interest is compounded per year

in this problem we have

P=$2,000

t=5 years

r=6%=6/100=0.06

n=12

substitute the given values in the above formula

therefore

The coordinates of the vertices of triangle are given as H(2,2), (J(2, 4), K(0,2)

We would determine the longest side by applying the formula for finding the distance between two points which is expressed as

Thus, the longest side is JK. The formula for finding midpoint is

Midpoint = (x1 + x2)/2, (y1 + y2)/2

Midpoint = (2 + 0)/2, (4 + 2)/2

Midpoint = 2/2, 6/2

Midpoint = 1, 3

The five fractions can be arranged in order, from the left to right, from least to greatest as : 5/17 , 3/10 , 4/13 , 1 /3.

The fraction can be arranged from the  from least to greatest by firstly convert the fraction to the decimal numbers so that one c b able to identify the highest and the lowest values.

The given fractions  1 /3 2 /7 3/10 4/13 5/17 can be converted to decimal numbers as 0.33 , 0.67 , 0.30 , 0.31 , 0.29 respectively and this can be arranged as 5/17 , 3/10 , 4/13 , 1 /3.

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Step-by-step explanation:

3.999 is the correct answer