Please help me please

Total surface area of this cylinder, the answer is (C) 163.36 cm².

What is an area ?

The total surface area of a cylinder can be found using the formula:

surface area = 2πr² + 2πrh

where r is the radius and h is the height.

Substituting the given values, we get:

surface area = 2π(4.0)² + 2π(4.0)(2.5)

= 2π(16.0) + 2π(10.0)

= 32π + 20π

= 52π

Using the approximation 3.14 for π and rounding to 2 decimal places, we get:

surface area ≈ 52(3.14) ≈ 163.36 cm²

Therefore, the answer is (C) 163.36 cm².

What is cylinder?

A cylinder is a three-dimensional shape that has two circular bases that are parallel and congruent to each other. The sides of a cylinder are curved, and they connect the bases. A cylinder has a constant cross-sectional area throughout its height, and it is a type of prism. The height of a cylinder is the perpendicular distance between the bases.

The volume of a cylinder can be calculated using the formula V = πr²h, where r is the radius of the base and h is the height of the cylinder. The surface area of a cylinder can be calculated using the formula A = 2πr² + 2πrh, where r is the radius of the base and h is the height of the cylinder. Cylinders are commonly found in everyday objects such as cans, pipes, and containers.

To know more about area, visit:

https://brainly.com/question/22074027

#SPJ1

Answer:

3 \(\frac{46}{81}\)

Step-by-step explanation:

change 1 \(\frac{8}{9}\) to an improper fraction

1 \(\frac{8}{9}\) = \(\frac{17}{9}\) , thus

\(\frac{17}{9}\) × \(\frac{17}{9}\) = \(\frac{289}{81}\) = 3 \(\frac{46}{81}\) or 3.57 ( to 2 dec. places )

Answer:

3.57

Step-by-step explanation:

1 8/9 =

(17/9)^2

17/9 x 17/9

17 x 17/ 9 x 9

17^2/ 9^2

289/81

3.567901

3.567901 Rounded is 3.57

Hope this helps!

Plz name brainliest if you can!

False. The weight of a variable in a standardized predictor environment does not necessarily indicate that the variable has a higher discriminating power.

Discriminating power is determined by the correlation of a predictor variable with the outcome variable. We can calculate the correlation between a predictor variable and an outcome variable using Pearson's correlation coefficient, which is represented by the formula:

r = (NΣXY - (ΣX)(ΣY)) / √[(NΣX2 - (ΣX)2)(NΣY2 - (ΣY)2)].

In this formula, N is the sample size, ΣX is the sum of the predictor variable, ΣY is the sum of the outcome variable, ΣXY is the sum of the products of the predictor and outcome variables, and ΣX2 and ΣY2 are the sums of the squares of the predictor and outcome variables, respectively. The Pearson's correlation coefficient ranges from -1 to +1, with +1 indicating perfect positive correlation, 0 indicating no correlation, and -1 indicating perfect negative correlation. A higher correlation coefficient indicates a higher discriminating power.

Therefore, the weight of a variable in a standardized predictor environment does not indicate whether or not the variable has a higher discriminating power; this is determined by the correlation between the predictor and outcome variables.

Learn more about Pearson's correlation here:

https://brainly.com/question/28316863

#SPJ4

Answer:

y = -3

Step-by-step explanation:

y=2cos(x/4)−3

range of cos α : -1 ≤ cos α ≤ 1

-2 ≤ 2cos(x/4) ≤ 2

-5 ≤ 2cos(x/4)−3 ≤ -1       (-2-3= -5 and 2-3= -1) ....Range ( 2 x Amplitude)

midline: midline of y = -1 and y = -5        y = -3

Answer:

congruent

Step-by-step explanation:

In geometry, two figures or objects are congruent if they have the same shape and size, or if one has the same shape and size as the mirror image of the other.

so yes, they are congruent because they have the same angle

To check the if a table represents a linear function we have to find the rate of change between the first two ordered pairs can be compared to the rate of change between the first and last ordered pairs to see if they are the same.

Well, a straight line is proportional to a linear function (on a graph). And the answers to the numbers can't be the same. If the X input is 5, for instance, and the Y output is 7, then Another non-linear X input of 5 and Y output of 8 follows.

The terms "linear function" in mathematics apply to two different but related ideas: A polynomial function of degree zero or one that has a straight line as its graph is referred to as a linear function in calculus and related fields.

To know more about Straight line click on below link:

https://brainly.com/question/29223887#

#SPJ4

Answer:

yessir

Step-by-step explanation:

Answer: Rounded to the nearest $10 he would have to invest $830

Step-by-step explanation: While I am not completely familiar with this sort of math I am still relatively confident that I got the correct answer. Using the formula A = Pe^rt. First we can convert the percentage to a decimal so it can be used efficiently in the formula. So r = 3.1/100 which in turn equals 0.031 which is our decimal. Now we can simply input our information into the formula for our answer so follow along

A = 830 * e ^(0.031 * 6)

A = 830(2.718281828459045)^(0.186)

A = 999.67

And of course this is not exactly $990 because the question stated to round the original investment amount to the nearest 10 dollar. This should be your answer and if you have any other questions about this please do not hesitate to reach out :)

Answer:

x^2 +3x

Step-by-step explanation:

The outer rectangle has an area of

A = l*w = (4x)*(x+2) = 4x^2 +8x

The inner rectangle has an area of

A = (3x+5)*x = 3x^2 +5x

Subtract the inner rectangle from the outer rectangle

Shaded area = 4x^2 +8x - ( 3x^2 +5x)

Distribute the minus sign

                       =4x^2 +8x -  3x^2 -5x

Combine like terms

                       = x^2 +3x

Answer:

Explanation:

-240 = 8y

8y = -240

8y / 8 = -240 / 8

- PNW

After solving the quadratic equation x² + 3x = 40 using the quadratic formula, (A)  x = –8, x = 5  

We can solve this quadratic formula by following a few steps.

The given equation is,

x² + 3x =40

Let's subtract 40 from both sides,

x² + 3x - 40 =40 - 40

Or, x² + 3x - 40 = 0

Now, we have to find a suitable pair of factors of -40 which is capable to generate +3 ( coefficient of x ).

The required pair is 8 and -5, and ( 8 - 5 ) = 3    

[ -40 = 8 × -5 ]

Therefore, x² + 3x - 40 = 0

Or, x² + ( 8 - 5 )x - 40 = 0

Or, x² + 8x - 5x - 40 = 0

Or, x ( x + 8 ) - 5 ( x + 8 ) = 0   [ taking x and 5  as common ]

Or, ( x + 8 ) ( x - 5 ) = 0            [ taking ( x + 8 ) as common ]

If the multiplication or product of two or more terms is zero, then we can write each term as zero.

               ( x + 8 ) = 0

               Or, x = -8        ( by subtracting 8 from both sides )

              ( x - 5 ) = 0

              Or, x = 5           ( by adding +5 with both sides )

Now, we can conclude that x = -8 and 5.    

To know more about quadratic equations visit,

https://brainly.com/question/17177510?referrer=searchResults

#SPJ9

Given:

Mara put down 7.5% on the purchase of her new home.

She put down $14.175.

To find:

The purchase price of the home.

Solution:

Let x be the purchase price of the home.

According to the question,

Put down = 7.5% of the purchase price of the home.

\(14.175=\dfrac{7.5}{100}\times x\)

\(14.175=0.075x\)

Divide both sides by 0.075.

\(\dfrac{14.175}{0.075}=x\)

\(189=x\)

Therefore, the purchase price of the home is $189.

Answer:

Perimeter = 36m

Step-by-step explanation:

Area = l x w

65m = 13m x w

5m = w

Perimeter = 2(l + w)

Perimeter = 2(13m + 5m)

Perimeter = 36m

Answer:

36m

Step-by-step explanation:

The equation for the area of a rectangle is A = w*l, where w = width and l = length

Since we already have the area and the width, we can plug those values into the equation to find the width (w)

A = w*l

65 = w*13

we can divide both sides by 13 to isolate the w variable, and we get that

w = 5

The equation for the perimeter of a rectangle is

P = 2(l +w)

P = 2(13 +5)

P =36

The perimeter is 36m

Answer:

Step-by-step explanation:

Answer:

This diagram is a straight edge and compass construction . A is the centerof one circle , and B is the centre of the other . A rhombus is a quadrilateral with 4 congruent sides

Step-by-step explanation:

Answer:

The expanded form of 1.2*10^9 is 1400000000

I'm not very sure what you mean but I have found two solutions.

Solution No.1:

1400000000 - 7000 = 1399993000

Solution No.2:

Let's say the variable is "x"

7000 * x = 1400000000

x = 200000

Hope this helped! :)

Answer: C) 50x

Step-by-step explanation:

Answer:

1. push  2. machine 3. gravity 4. balance 5. energy. 6 force 7. pull 8. friction 9. newtons 10. inertia

Step-by-step explanation:

Answer:

push, machine, gravity, balance, energy, force, pull, friction, newtons, inertia

Step-by-step explanation:

i took that and got it right

First make the graph of the functions, then  if the two graphs are symmetric with respect to the line y = x (mirror images over y = x ), then they are inverse functions.

Symmetric

A figure or shape that can be divided into two equal parts by a line is called symmetric figures.

Inverse Functions

The inverse function of a function f  is a function that undoes the operation of f. The inverse of f exists if and only if f is bijective, and if it exists, is denoted by F^-1.

Learn more about graph and functions here :-

brainly.com/question/17267403

#SPJ4

Answer:

x = -2 or x = -16

Step-by-step explanation:

We need to find the absolute value of x and to do that we need to follow the below process:

|x+9| = 7 get rid of brakes

x+9 = 7 or x+9 = -7

if

x+9 = 7 subtract 9 from both sides

x = -2

if

x+9 = -7 subtract 9 from both sides

x = -16

The number of ways to pick 6 people from a group of 10 so that the bride and groom must be next to each other is 8!4!4!⋅5!⋅2!

We can reduce your problem to a simpler one, as you claim that the bride must be in the picture. Now you have to select 5 people out of 9.

It's just 9!4!5!

Now it's just a matter of choosing the participants of the picture. Since there are 6 people in the picture, you can arrange 6 of them! ways. This leaves the total number of possible combinations 9!4!5!⋅6!

I would also like to discuss another possible option of 6 people from a group of 10 where 2 of the 6 must be the bride and groom and must be next to each other. I can see it coming in a similar situation.

This has a familiar beginning. We already know 2 of the 6 people, so only 4 left to choose from the remaining 8. This is given by 8!4!4!.

Now we need to permute the group of 6 participants. One would like to say that this is simply a 6! like the first problem, but it's a little different. Remember that the bride and groom must be next to each other. You can basically think of these two people as one person.

So the actual number of ways to permute this group of 6 people with a constraint is 5! . There is one more condition. If you don't subscribe to the opinion that the groom must always be on the left (facing the couple), you have two options to arrange our couple.

The number of ways to pick 6 people from a group of 10 so that the bride and groom must be next to each other is 8!4!4!⋅5!⋅2!

Learn more about combination here:

https://brainly.com/question/28359481

#SPJ4

Step-by-step explanation:

\( {x}^{3} - {y}^{3} = (x - y) ({x}^{2} + {y}^{2} + xy)\)

\( {k}^{3} - {4}^{3} \)

\((k - 4)( {k}^{2} + {4}^{2} + 4k)\)

\((k - 4)( {k}^{2} + 16 + 4k)\)

Hope it helps :)

Answer:

-3

Step-by-step explanation:

p(x) = x^2-6x+5

Let x= 4

p(4) = 4^2-6(4)+5

Exponents first

       = 16 -6(4) +5

Multiply

     = 16 -24 +5

Add and subtract

    = -8+5

   = -3

The total points for the quiz can be calculated by dividing Adriana's score of 18 by the percentage she got (75%). This gives us 24 points as the total for the quiz. Therefore, the total points for the quiz are 24.

Percentage is a term used to describe a portion of a whole expressed as a fraction of 100. It is often used to express a proportion of a given quantity relative to the whole. Percentage can be used to compare different values, such as the success rate of two different marketing campaigns, or to measure the change in value of a single quantity, such as the increase in sales. Percentage can also be used to calculate the amount of a given number to be added or subtracted from a total, such as calculating the applicable tax rate.

To learn more about percentage

https://brainly.com/question/24877689

#SPJ1

The confidence interval for the one-way analysis of variance experiment be, (138.94 , 181.06) and the margin of error of the poll be,

±31.06.

On Subtracting 1 from your sample size, we get

330 – 1 = 229.

On Subtracting confidence level from 1, and then divide by two.

(1 – .95) / 2 = 0.025

Now, df = 229 and α = 0.025

from the table at df = 999 we got 2.262.

Divide your sample standard deviation by the square root of your sample size.

150 / √(330) = 1.37

Now, 2.262 × 1.37 = 31.06

So, the confidence interval be,

(150 - 31.06 , 150 + 31.06) = (138.94 , 181.06)

Hence, the confidence interval for the one-way analysis of variance experiment be, (138.94 , 181.06) and the margin of error of the poll be,

±31.06.

Learn more about Statistics here https://brainly.com/question/27165606

#SPJ4

Answer:

756 m²

Step-by-step explanation:

The surface area is the function of 2 dimensions.

Scale factor is

Surface are for the bigger solid will be 1.5*1.5 times the area of the smaller one

Answer:46 answers :)

Step-by-step explanation:

THE GENERAL EQUATION OF A STRAIGHT LINE IS y=mx+c

TO FIND c I WILL SUBSTITUTE THE GIVEN KNOWN POINTS.

\( - 5= \frac{1}{2} (2) + c \\ - 5= 1 + c \\ c = - 5 - 1 \\ c = - 6\)

THEREFORE WE NOW HAVE

\( y= \frac{1}{2} x - 6\)

ATTACHED IS THE SOLUTION

Answer:

Step-by-step explanation:

\( \mathsf{ 12 {p}^{2} q - 9 {q}^{2} }\)

In such an expression, the factor which is present in all terms of the expression is taken out as common and each term of the expression should be divided by the common factor to get another factor.

Factor out 3q from the expression

\( \mathsf{ = 3q(4 {p}^{2} - 3q)}\)

Hope I helped!

Best regards!

Factorization of 12p²q-9q² is  3q(4p²-3q).

Factorization is defined as breaking an entity into a product of another entity, or factors, which when multiplied together give the original number.

Here, given expression is,   12p²q-9q²

Now, by factorizing this we get,

3q(4p²-3q)

Hence, required factorization is 3q(4p²-3q)

To learn more on factorization click:

https://brainly.com/question/14549998

#SPJ2

Answer:

He walks 1030 meters if he walks across the park.

Step-by-step explanation:

In order to solve this question we will need to know that \(c^{2} = a^{2} + b^{2}\) (were c is the length of the hypotenuse (the diagonal line) of a right angle triangle, and a and b are the legs (the sides that form a right angle). So them means that.....

Let "c" be the distance he will need to walk if he was going to go through the park

Let "a" be the distance he walks on King Street

Let "b " be the distance he walks on Queen Street, then.....

\(c^{2} = a^{2} + b^{2}\)

\(c = \sqrt{a^{2} + b^{2} }\)

(Now plug in the values of a and b and get.....)

c = \(\sqrt{500^{2} + 900^{2} }\)

c = \(\sqrt{1060000 }\)

c = 1029.563014............

So I would assume that you have to round to the nearest meter. And as a result we get 1030 meter.