How long is the tape for 30 mins

Answer:

17

Step-by-step explanation:

n = 3

a(n) = 3*2n - 1

a(3) = 3*2*3 - 1

       = 18 - 1

        = 17

Answer:

25%

Step-by-step explanation:

Answer:

The percentage of students that are girls is 25%.

Answer:

clearly 1 plane

Step-by-step explanation:

J is out of the plane .while K and N. are in same plne

0 planes contain points J, K, and N. Therefore, option A is the correct answer.

A plane in geometry is a level surface that never ends. Other names for it include a two-dimensional surface. A plane has an unlimited width, an endless length, zero thickness, and no curvature.

From the given figure, planes x and y are intersecting.

Here, point J is not in the planes x and y.

Point K and N are in the plane x.

Therefore, option A is the correct answer.

Learn more about the coordinate plane here:

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Answer:

7.63888888889

Step-by-step explanation:

They probably want you to simplify too!

Answer:

[tex]\dfrac{-7}{2}[/tex]

Step-by-step explanation:

Here we are given a polynomial ,

[tex]\implies f(x) = 2x^3 + Ax^2 + 4x - 5 [/tex]

And the value of ,

[tex]\implies f(2) = 5 \dots (i) [/tex]

And we need to find out the value of A . Firstly substitute x = 2 in f(x) , we have ,

[tex]\implies f(2) = 2(2)^3+ A(2)^2 + 4(2) -5 [/tex]

Simplify the exponents ,

[tex]\implies f(2) = 2(8) + A(4) + 8 - 5 [/tex]

Simplify by multiplying ,

[tex]\implies f(2) = 16 + 4A + 3 [/tex]

Add the constants ,

[tex]\implies f(2) = 19 + 4A [/tex]

Now from equation (i) , we have ,

[tex]\implies 19 + 4A = 5 [/tex]

Subtracting 19 both sides,

[tex]\implies 4A = 5-19 [/tex]

Simplify,

[tex]\implies 4A = -14[/tex]

Divide both sides by 4 ,

[tex]\implies A =\dfrac{-14}{4}=\boxed{ \dfrac{-7}{2}}[/tex]

Hence the value of A is -7/2.

An exponential function is a function that has the form y = ab^x, where a represents the initial value, and b represents the rate

The exponential function is given as:

[tex]y = 0.50(1.06)^x[/tex]

When x = 0, we have:

[tex]y = 0.50 * (1.06)^0 = 0.50[/tex]

When x = 10, we have:

[tex]y = 0.50 * (1.06)^{10} = 0.90[/tex]

When x = 20, 30 and 40 we have:

[tex]y = 0.50 * (1.06)^{20} = 1.60[/tex]

[tex]y = 0.50 * (1.06)^{30} = 2.87[/tex]

[tex]y = 0.50 * (1.06)^{40} = 5.14[/tex]

So, the complete table is:

Years after 1950 X : 0 | 10 | 20 | 30 | 40

Ticket Price $ Y     : 0.50 | 0.90 | 1.60 | 2.87 | 5.14

The prices look reasonable.

The y-intercept is when x = 0.

So, the value of the y-intercept is 0.50

Also, the rate represents a growth.

This is so, because the rate is greater than 1

See attachment for the graph of the exponential function

When x = 50 and 60, we have:

[tex]y = 0.50 * (1.06)^{50} = 9.21[/tex]

[tex]y = 0.50 * (1.06)^60} = 16.49[/tex]

Hence, the prices in 2000 and 2010 are $9.21 and $16.49

Read more about exponential functions at:

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Answer:

it going to be c becauase i did that

Step-by-step explanation:

The exponent of the power is 11 in scientific notation.

The numbers are;

The product of  (9. 1 × 10^9)(7. 5 × 10^2)

Scientific notation is a method of expressing numbers in terms of a decimal number between 1 and 10, but not 10 itself multiplied by a power of 10.

To find the product of the given numbers follows all the steps given below.

The product of number is;

[tex]=(9.1 \times 10^9) \times (7.5 \times 10^2)\\\\= (9.1 \times 7.5) \times (10^{(9+2)})\\\\ =68.25 \times 10^{11}[/tex]

Hence, the exponent of the power is 11 in scientific notation.

To know more about Scientific notation click the link given below.

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Answer:

smart good job I can't never figure out that one

[tex]\huge\boxed{\fcolorbox{black}{green}{Answer}}[/tex]

The surface area of this prism consists of:

Sprism = Sprism + Ssides

the bases of triangles the area of each one is

Atriangle = 1/2bh

Aonebases = 1/2bh

Abothbases = 2×1/2×bh = bh

Arectangle = l×w where l is the length and w is the width

Aside = ls

If the triangular base has unequal sides then you calculate the perimeter( P) of the triangle and multiply it by the height of the prism to get the area of the sides (lateral surface area)

If the base is an equilateral triangle then all three sides have equal areas and the lateral surface area becomes = 3ls

Sprism = bh+pl

Answer:

option D

Step-by-step explanation:

because 118 + 44 + 18 = 180

Hope this helps

Pls mark brainliest

Answer:

its a

Step-by-step explanation:

good luck!!

Answer:

x =3i, -2i

Step-by-step explanation:

did it like a quadriatic formula  

that is what i got so (maybe) the other way of is an answer as well?

0.7 • 48 = 7 • 4.8 = 28 + 5.6 = $33.6

Answer:

For the first question the answer is 7/8 and for the second 1 the answer is 10/10 or 1/10

Step-by-step explanation:

you subtract 1/2 from 1 3/4 and get 7/8 same for the bottom question subtracted 1/4 from 2 1/2 for you answer.

Similar triangles may or may not have equal side lengths

Triangles ABC and DEF are similar by SSS theorem

The coordinates of the two triangles are:

A (0,0), B (4,0), C (0,2), D (0,0), E (2,0), and F (0,1)

Calculate the lengths of both triangles using the following distance formula

[tex]d = \sqrt{(x_2 -x_1)^2 + (y_2 -y_1)^2}[/tex]

For triangle ABC, we have:

[tex]AB = \sqrt{(0 -4)^2 + (0 -0)^2} = 4[/tex]

[tex]BC = \sqrt{(4 -0)^2 + (0 -2)^2} = 2\sqrt 5[/tex]

[tex]CA = \sqrt{(0 -0)^2 + (0 -2)^2} = 2[/tex]

For triangle DEF, we have:

[tex]DE = \sqrt{(0 -2)^2 + (0 -0)^2} = 2[/tex]

[tex]EF = \sqrt{(2 -0)^2 + (0 -1)^2} = \sqrt 5[/tex]

[tex]FD = \sqrt{(0 -0)^2 + (1 -0)^2} = 1[/tex]

Divide corresponding sides of the triangles to calculate the scale factor k

[tex]k = \frac{AB}{DE} = \frac{BC}{EF} = \frac{CA}{FD}[/tex]

This gives

[tex]k = \frac{4}{2} = \frac{2\sqrt 5}{\sqrt 5} = \frac{2}{1}[/tex]

Evaluate the quotients

[tex]k = 2 = 2 = 2[/tex]

Since the quotients are equal, then the triangles are similar

Hence, triangles ABC and DEF are similar by SSS theorem

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Answer:

The volume of cylinder B is 3 times the volume of Cylinder A

because the cylinder volume = pi r² h

h = hight

pi is a constant N

The volume of cylinder B is 3 times the Volume of cylinder A.

Option A is the correct answer.

A cylinder is a three-dimensional figure that has a radius and a height.

The volume of a cylinder is πr²h.

Example:

The volume of a cup with a height of 5 cm and a radius of 2 cm is

Volume = 3.14 x 2 x 2 x 5 = 62.8 cubic cm

We have,

Cylinder A:

Radius = 6 cm

Height = 10 cm

Volume.

= π x 6² x 10

= 360π _____(1)

Cylinder B:

Radius = 6 cm

Height = 30 cm

Volume.

= π x 6² x 30

= 3 x 360π ______(2)

From (1) and (2) we get,

The volume of cylinder B = 3 x the Volume of cylinder A.

Thus,

The volume of cylinder B is 3 times the Volume of cylinder A.

Learn more about cylinder here:

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Answer:

Step-by-step explanation:

You have to apply the Pythagorean Theorem here

Diagonal Route ^2 = 60^2 + 80^2

D^2 = 3600 + 6400 = 10 000

D = 100

Step-by-step explanation:

the volume of such an object is created by multiplying the 3 side length dimensions :

length × width × height.

if you triple one of them, then you bring that factor 3 one time into the volume multiplication, and the volume also triples .

in our case that is 60×3 = 180.

FYI

if you would triple fire example all 3 dimension lengths, you would bring that factor 3 into the volume multiplication 3 times (once for every dimension).

and so the volume would increase by the factor

3×3×3 = 27.

Answer:

See below

Step-by-step explanation:

The divisor is: x + 3

The dividend is : [tex]x^3-2x^2-9x+18[/tex]

The quotient is : [tex]x^2-5x+6[/tex]

The values of each expression are given as follows:

1. p(a) = 4a² - 3.

2. r(2a) = 1 + 6a.

3. 3r(a) = 3 + 9a.

4. -4p(a) = -16a² + 12.

5. p(a^2) = 4a^4 - 3.

6. r(x+2) = 3x + 7.

To find the numeric value of a function or of an expression, we replace each instance of the variable in the function or in the expression by the value at which we want to find the numeric value.

Hence, for item 1, we have that:

p(a) = 4a² - 3.

(as the input variable is x, which appears only once in the expression).

For item 2, we have that:

r(2a) = 1 + 3(2a) = 1 + 6a.

For item 3, the expression is calculated in two parts, as follows:

For item 4, the expression is also calculated in two parts, as follows:

For item 5, we have that:

p(a²) = 4(a²)² - 3 = 4a^4 - 3.

For item 6, we have that:

r(x + 2) = 1 + 3(x + 2) = 1 + 3x + 6 = 3x + 7.

Learn more about the numeric values of a function at brainly.com/question/28367050

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Answer:

A

Step-by-step explanation:

no more if it's a postive or negative. They will all add up in a linear straight line.

Answer:

x = 30.2

Step-by-step explanation:

You can do inverse operation to solve the problem.

9.5 + 20.7 = 30.2

x = 30.2

Answer is the ratio 3:5

Explanation:

To write the pants to shirt ratio, we write the numbers 12 and 20 in that order (since they correspond to the counts of each clothing item). Separate them with a colon to get 12:20

The last step is to divide both parts by the GCF 4

12/4 = 3

20/4 = 5

The ratio 12:20 fully reduces to 3:5

For every 3 pairs of pants, you have 5 shirts.

Answer:

17cm is the answer

Step-by-step explanation:

27×2 = 54

88 - 54 = 34

34 ÷ 2 = 17

Answer:

The answer is the first one "If they play a large number of turns, they should expect to average about 1.5 points per turn."

Step-by-step explanation:

This is essentially, because the 1st answer makes sense, while the other two are kind of ridiculous. Saying that the amount of points are exactly 3 points is not true, and saying it is possible to get 1.5 points on a turn is also impossible.