Please help me, i've asked before but go no answer. Brainliest to correct answer and thanks to all answers

Answer:

395.841

Step-by-step explanation:

2 \pi r^2 = 2 \pi(7\text{ m})^2\approx

2πr

2

=2π(7 m)

2

≈

\,\,307.87608\text{ m}^2

307.87608 m

2

Top and bottom circles

\underline{+\ bh = (2 \pi \ 7\text{ m})(2\text{ m})}\approx

+ bh=(2π 7 m)(2 m)

​

≈

\,\,\underline{87.964594\text{ m}^2}

87.964594 m

2

​

The side is a rectangle with base = circumference

\text{Add them up:}\phantom{=}

Add them up:=

\,\,395.840674\text{ m}^2

395.840674 m

2

Final answer

\approx

≈

\,\,395.841\text{ m}^2

395.841 m

2

Round

The surface area of the cylinder is 396 m²

A cylinder has traditionally been a three-dimensional solid, one of the most basic of curvilinear geometric shapes.

Given that, A cylinder with height 2 m and radius 7 m, we are asked to find its surface area.

The surface area of a cylinder is given by = 2πr(h+r)

= 2×3.14×7(7+2)

= 396

Hence, the required surface area is, 396 m²

For more references on cylinder, click;

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Answer:

63

Step-by-step explanation:

4*15=60 60*3.14=188.4 188.4*1/3= 62.8 rounded that would be 63

Answer:

C - 9 cm

Step-by-step explanation:

We can use the Pythagorean theorem to figure out the missing side length, in this case, X.

The Pythagorean theorem states: a^2 + b^2 = c^2, with c being the hypotenuse. We have the side length of the hypotenuse which is 15, and we have another side length of 12. Let's put these back in our equation:

a^2 + 12^2 = 15^2;

If we simplify the squares by simply doing them: a^2 + 144 = 225;

Now let's subtract 144 from both sides to isolate the variable, a:

a^2 = 81;

Now we square both sides to find a:

a = 9

The missing side length is 9 cm.

Answer:

#27: 56 ft squared #28: 32.85 ft squared

Step-by-step explanation:

Hope this helped! Please rate it if this helped!

Answer: 40 miles

Step-by-step explanation:

Divide 600 by 15 and you get 14

Answer:

4 miles

Step-by-step explanation:

0.15 divided by 600 is 4000 miles.

(don't count the limo cost, just count the mile driven)

Answer:

72X + 54

Step-by-step explanation:

Answer: The answer is, 18x4 + 36x3 − 9x2

Hey! I hope this helps!

2x + 4 = 3x+ (-1)

Option D)

We are given the following in the question:

Let x represent Kim's age

"Bob is 4 years older than twice Kim's age"

Thus, Bob's age =

4 + 2x years

"Paul is 1 year younger than 3 times Kim's age."

Thus. Paul's age is

(3x - 1) years

If Bob's age and Paul's age is equal, we can write:

2x + 4 = 3x + (-1)

Thus, the required expression is

Option D)

The equation can be used to determine Kim’s age will be 2x + 4 = 3x + (–1). Then the correct option is D.

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

Use the information to write an equation with variables on both sides. Let x represent Kim’s age.

Bob is 4 years older than twice Kim’s age. Then the age of the Bob will be in terms of x.

B = 2x + 4

Paul is 1 year younger than 3 times Kim's age. Then the age of the Paul will be in terms of x.

P = 3x – 1

Bob and Paul are the same age.

B = P

Put the value of B and P, then we have the equation will be

2x + 4 = 3x – 1

2x + 4 = 3x + (–1)

Then the correct option is D.

More about the linear system link is given below.

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The given function f(x) = -3(x-2)^2 + 14 is a quadratic equation shown in vertex form. To find an equivalent equation in standard form or solve for its roots, one can expand and simplify or use the quadratic formula with the appropriate coefficients.

The equation f(x) = -3(x-2)^2 + 14 is a quadratic equation in vertex form. In standard form, a quadratic equation is represented as at^2 + bt + c = 0. To express f(x) in this standard form, we simply need to expand the squared term and simplify. The given equation already shows that the parabola has been reflected vertically due to the negative sign before the coefficient of the squared term, and it is shifted 2 units to the right and 14 units up from the origin.

Transformations of the independent variable such as multiplying by a constant or adding a number, like in f(2x) or f(-2x), will affect the graph of the quadratic function. They result in horizontal scaling or reflection, while transformations like f{-2(x+1)} involve horizontal shifting.

To solve a quadratic equation that is set equal to zero, we can use the quadratic formula, which employs the coefficients a, b, and c. As an example, for a quadratic equation with constants a = 4.90, b = 14.3, and c = -20.0, the roots can be found through this formula.

Answer:

110

Step-by-step explanation:

subtract 40 from 150

Answer:

Step-by-step explanation: So She already   40 out of 150  

flyers made. So subtract 150 minus 40 and you get 110. So the answer is 110 flyers she has left to make

Answer:B

Step-by-step explanation:

Answer:

3cm

Step-by-step explanation:

Diameter (2r)= 6cm.

Radius, r= 6/2 = 3 cm

Answer:

P1 (6, 2/3 π)

P2 (6, 10/3 π)

P3 (6, 14/3 π)

Step-by-step explanation:

To find the other three points you take into account that if you sum 2π to one coordinate you have the same point.

Hence, by adding 2π to -4π/3, and again other two times:

[tex]-\frac{4}{3}\pi+2\pi=\frac{2}{3}\pi\\\\\frac{2}{3}\pi+2\pi=\frac{8}{3}\pi[/tex]

[tex]\frac{8}{3}\pi+2\pi=\frac{14}{3}\pi[/tex]

hence, the other two points are

P1 (6, 2/3 π)

P2 (6, 10/3 π)

P3 (6, 14/3 π)

See the attached picture.

Answer:

8 inches

Step-by-step explanation:

4 times 1 times 2 equals 8

Answer:

8

Step-by-step explanation:

4*2*1

Answer:

with what

Step-by-step explanation:

tell me i think i can help

Answer:

T= -5.74

Step-by-step explanation:

Answer:

The area of each of the bases will be m2 answer; (1)(3)=3

The area of the right and left lateral faces will be m2. answer; (1)(2)=2

The area of the front and back lateral faces will be m2. answer; (2)(3)=6

The lateral area of the prism will be m2. answer ; 16

Step-by-step explanation:

Area of each bases = 3 m²

Area of the right and left lateral faces = 2 m²

Area of the front and back lateral faces = 6 m²

Lateral area = 16 m²

Surface area of the rectangular prism = 22 m²

Lateral area = 2(l + w)h

Surfacea area = 2(wl+hl+hw)

We are given a rectangular prism that has the following dimensions:

Length (l) = 1 m

Width (w) = 3 m

Height (h) = 2 m

Area of each bases = l × w = 1 × 3 = 3 m²

Area of the right and left lateral faces = 1 × 2 = 2 m²

Area of the front and back lateral faces = 2 × 3 = 6 m²

Lateral area of the rectangular prism = 2(l + w)h = 2(1 + 3)2 = 16 m²

Surface area of the rectangular prism = 2(wl+hl+hw) = 2(3 × 1 + 2 × 1 + 2 × 3) = 22 m²

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Answer:

The system of equation to determine the quantity of nickels and quarters is simultaneous equation.

Nickels = 17

Quarters = 22

Step-by-step explanation:

Given

Let n represent number of nickels

Let q represent number of quarters

From line 1 of the question, we understand that

Total coins = 39

So, n + q = 39 because the made up of the nickels and the quarters

It's also stated that the total value of these 39 coins is $6.35.

First, it should be noted that

1 nickel is worth 0.05 and 1 quarter is worth 0.25, we can represent the total value of the coins with the following equation

0.05n + 0.25q = 6.35

At this point, we have two equation such can be solved simultaneously

n + q = 39 ------- (1)

0.05n + 0.25q = 6.35 ------- (2)

So, the system of equation to determine the quantity of nickels and quarters is simultaneous equation.

Solving further.....

Make q the subject of formula in equation (1)

q = 39 - n

Substitute 39 - n for q in equation 2

0.05n + 0.25q = 6.35 becomes

0.05n + 0.25(39 - n) = 6.35

0.05n + 9.75 - 0.25n = 6.35

Collect like terms

0.05n - 0.25n = 6.35 - 9.75

-0.2n = -3.4

Divide through by -0.2

-0.2n/-0.2 = -3.4/-0.2

n = 17

Recall that q = 39 - n

Substituton 17 for n in this equation

q = 39 - 17

q = 22

Hence, there are 17 nickels and 22 coins

Answer: n = -10

Step-by-step explanation:

-3(n+9) = 3

-3n - (-27n) = 3

-30n = 3

n = -10

Answer:

n = -10

Step-by-step explanation:

Distribute -3 to n and 9. This makes -3n - 27 = 3. Add 27 to both sides, giving you -3n = 30. Divide -3 from both sides. This makes n = -10.

Answer:

it's answer is 36 inch ²

Hope it will help as I have my answers with picture.

Answer:

Step-by-step explanation:

You multiply 2 times 11 and then you multiply 9 times 2 then you multiply the answers I think sorry I am not that useful

Answer:

B

Step-by-step explanation:

The volume of a square pyramid can be found using:

v=1/3 bh

Where b is the area of the base, and h is the height

First, let's find the area of the base

a=l*l

We know the length is 5, so we can substitute it in

a=5*5

a=25

Now we know b(area), is 25, and we know the volume is 75, so we can substitute them in

v=1/3 bh

75=1/3(25)h

Divide both sides by 1/3, or multiply both sides by the reciprocal, 3/1

225=25h

Divide both sides by 25

h=9

So, the height is 9 feet , or choice B

Answer:

7 over 10

Step-by-step explanation:

add up the marbles then subtract the purple marbles and put it over ten and you get 7/10

Answer:

5xy*(3y+2)

Step-by-step explanation:

(1): "y2"   was replaced by   "y^2".

Step by step solution :

Step  1  :

Equation at the end of step  1  :

 10xy +  (3•5xy2)

Step  2  :

Step  3  :

Pulling out like terms :

3.1     Pull out like factors :

  15xy2 + 10xy  =   5xy • (3y + 2)

Final result :

 5xy • (3y + 2)

Answer:

−5xy(x+3y−2)

Step-by-step explanation:

Factor

−5xy out of −5x2y+10xy−15xy2.

The area of Brian's cake's top = base x height

                                                  = 13 x 9

                                                  = 117 square inches

Area of Nancy's cake's top = [tex]\frac{1}{2\\}[/tex] x base x height

                                             = [tex]\frac{1}{2}[/tex] x 15 x 12

                                             = 6 x 15

                                             = 90 square inches

Therefore, Brian's cake's top has a greater area than Nancy's.

Answer:

Brian's parallelogram-shaped cake top had the greater area. It was 27 in² greater than Nancy's cake top.

Step-by-step explanation:

To find the area of a parallelogram, use the formula A = b × h, where A is the area, b is the base and h is the height. Substitute the base and height into the equation.

A = 13 × 9

Then work out the equation to get:

117 = 13 × 9

This means that Brian's cake top has an area of 117 in².

Next, find the area of a triangle using the formula A = [tex]\frac{bh}{2}[/tex], where A is the area, b is the base, and h is the height. Substitute the base and height into the equation.

A = [tex]\frac{15*12}{2}[/tex]

The * symbol means the same as multiply.

Then work out the equation to get:

180 = [tex]\frac{15*12}{2}[/tex]

This means that Nancy's cake top has an area of 90 in².

We can see that Brian's cake top has a greater area than Nancy's already, but to find out how much greater, just subtract 90 from 117:

117 - 90 = 27

Hence, Brian's cake top has a greater area of 27 in².

Answer:

Footsteps

Step-by-step explanation:

Answer:

Footsteps.

Step-by-step explanation:

You walk more and more and eventually those footsteps from previous are left behind.

(My dad told me this as a moral lesson when I was young.)

P.S

Have a Amazing Day!

Faker/Tosrel

Answer:

16

Step-by-step explanation:

8+8=16

Answer:

The first shape is called (I don't know)

The second shape is called Icosahedron

The thrid shape is called Octahedron

Step-by-step explanation:

Answer:

A)8

Step-by-step explanation:

10 percentage is 4 (to get this you have to do 40/10)

so 20 percentage is 8 (4*2)

Answer: 8

Multiply 20%×40 and get 8

Simplify the expression.