The purple shape is a dilation of the black shape. What is the scale factor of the dilation?
​

Answer:

  140

Step-by-step explanation:

When working HCF and LCM problems, I like to think in terms of this little diagram:

  (a [ b ) c]

It shows me one of the numbers is ab, the other is bc, the HCF is b and the LCM is abc. "a" and "c" must be relatively prime for "b" to be the HCF.

__

Here, we're given ...

  b = 20

  ab = 320

  abc = 2240

Then ...

  c = abc/(ab) = 2240/320 = 7

  x = bc = 20(7) . . . . . . equivalently, x = (abc·b)/(ab) = (2240·20)/320

  x = 140

Answer:

B 144.5

Step-by-step explanation:

split the shape into two, the rectangle and triangle

area of rectangle is B*H, do 13*9, which is 117, then area of a triangle, 1/2 BH, so (5*11)/2, which is 27.5 then add 27.5+117 to get 144.5

26-8 = 18

She answered 18 questions in 3.6 hours.

18 problems/ 3.6 hours = 5 problems per hour.

8 problems / 5 problems per hour = 1.6 hours more are needed.

Answer:

254.34[tex]inches^2[/tex]

Step-by-step explanation:

The formula for the area of a circle is : [tex]\pi*radius^2[/tex]

The radius is the length from the side to the centre.

Pi=3.14

In order to work out the area you would first need to work out the radius. You can do this by dividing the diameter of 18 by 2, this gives you 9. This is because the radius is half of the diameter.

Now that we have worked out the radius the next step is to work out the area. You can do this by multiplying pi by the radius of 9 squared, this gives you 254.34 inches squared.

1) Divide 18 by 2.

[tex]18/2=9inches[/tex]

2) Multiply pi by 9 squared.

[tex]\pi*9^2=254.34inches^2[/tex]

Answer:

139

Step-by-step explanation:

First, find all the faces that you must find the areas of. In this case, you need to find the areas of two triangles and three rectangles.

In this triangular prism, the base is one triangle. If the area of the base is 7.75, we can assume that that holds true for both bases, and multiply 7.75 by 2 in order to find the area of both triangles.

Now find the area of each of the three rectangles by multiplying their individual heights and bases by each other. You should get 38, 47.5, and 38 as the areas of the rectangles.

Now add all the individual area's together. (They're bolded for clarity).

Answer:

use some memes juice

Step-by-step explanation:

memes

Answer:

B

Step-by-step explanation:

Answer:

The Aztecs made conquered people pay tributes, and asked cities, states, and countries to pay.

Hope this helps :)

Answer:

28043.3 [tex]m^{3}[/tex]

Step-by-step explanation:

Formula for volume of a hemisphere can be termed as:

[tex]V = \dfrac{2}{3} \pi r^{3}[/tex]

where [tex]r[/tex] is the radius of hemisphere

Please refer to the figure attached for the sample figure of a hemisphere.

We are given here, diameter of hemisphere = 47.5 m

Relation between diameter and radius is given as :

[tex]r = \dfrac{d}{2}[/tex]

where, [tex]r[/tex] is the radius and

[tex]d[/tex] is the diameter.

So, [tex]r = \dfrac{47.5}{2}\ m[/tex]

Volume is:

[tex]V = \dfrac{2}{3} \pi (\dfrac{47.5}{2})^3\\\Rightarrow \dfrac{2}{3} \times 3.14 \times (\dfrac{47.5}{2})^3\\\Rightarrow 28043.3\ m^3[/tex]

Hence, volume of given hemisphere is 28043.3 [tex]m^{3}[/tex].

Answer:

Step-by-step explanation:

What is the volume of a hemisphere with a diameter of 37.6 m, rounded to the  of a cubic meter?

\text{Volume of a Sphere:}

Volume of a Sphere:

V=\frac{4}{3}\pi r^3

V=

3

4

​

πr

3

\text{radius} = \frac{\text{diameter}}{2} = \frac{37.6}{2}=18.8

radius=

2

diameter

​

=

2

37.6

​

=18.8

meters

\text{Plug in:}

Plug in:

\frac{4}{3}\pi (18.8)^3

3

4

​

π(18.8)

3

27833.1369876

27833.1369876

Use calculator

\text{Volume of Hemisphere HALF of Volume of Sphere:}

Volume of Hemisphere HALF of Volume of Sphere:

\frac{27833.1369876}{2}

2

27833.1369876

​

Divide volume by 2

13916.5684938

13916.5684938

\approx 13916.6\text{ m}^3

≈13916.6 m

3

Round to the nearest tenth

$149.60 that's what he will have left

Answer:

[tex]9x^2-5x-7[/tex]

Step-by-step explanation:

[tex]d(x)=9x^2\\g(x)=5x+7\\d(x)-g(x)=\\(9x^2)-(5x+7)=\\9x^2-5x-7[/tex]

Hope this helps!

Answer:

[tex]9x^{2} -5x-7[/tex]

Step-by-step explanation:

Answer: 60 total penalty kicks

Step-by-step explanation:

She makes 51 = 85% of her penalty kicks. If 51 = 85% of x, how much is 100% (total penalty kicks)?

51 = 0.85x

x = 51/0.85 = 60 total penalty kicks

Step-by-step explanation:

[tex]pythagorean \: theorem \\ {hypothenes}^{2} = { {x}^{2} + {y}^{2} } \\ {17}^{2} = {x}^{2} + {15}^{2} \\ 289 = {x}^{2} + 225 \\ {x}^{2} = 64 \\ x = 8cm[/tex]

Answer:

1. y = -3x + 5

2. y = 1/4x - 2

Step-by-step explanation:

y=mx+b

1. 5 = -3(0) + b, so b = 5

y = -3x + 5

2. (-2-(-1))/(0-4) = -1/-4 = 1/4

-2 = 1/4(0) + b, so b = -2

y = 1/4x - 2

Answer: -3x+5

                1/4x - 2

Step-by-step explanation:

Answer:

21

Step-by-step explanation:

Answer:

21

Step-by-step explanation:

4+(9•2)+(4-1)-4

PEMDAS says parentheses first

4+(18)+(3)-4

Then add and subtract from left to right

22 +3-4

25 -4

21

Answer:

5 over 4x

i used photomath so it should be right

Answer:

Step-by-step explanation:

Answer:

[tex] 4i \sqrt{3} [/tex]

Step-by-step explanation:

[tex] \sqrt{-48} = [/tex]

[tex] = \sqrt{-1} \times \sqrt{16 \times 3} [/tex]

[tex] = i \times \sqrt{16} \times \sqrt{3} [/tex]

[tex] = i \times 4 \times \sqrt{3} [/tex]

[tex] = 4i \sqrt{3} [/tex]

Answer:

4 + (-6) = -2

-6 +(-5)=-11

Step-by-step explanation:

4 + (-6) =  4-6=-2

-6 +(-5)= -6-5 = -11

Answer:

702 emails

Step-by-step explanation:

Given data

Average personal emails received monthly = [tex]780 emails[/tex]

Average work emails received monthly[tex]= 760 emails[/tex]

      We are required to solve for the new amount of emails Joe will be receiving after changing his address, to find this value we need to solve for the depreciation of his personal mails.

      After solving for the depreciation , we then need to subtract the depreciation from the initial number of mails to get the new number of mails.

let us solve for 10% depreciation.

[tex]depreciation= \frac{10}{100} *780\\depreciation=0.1*780= 78 emails[/tex]

The new number of mails

[tex]= initial number of mail- depreciation\\ =780-78= 702 emails[/tex]

Joe will be receiving an average of 702 emails in his personal account monthly

Answer:

$29.4

Step-by-step explanation:

I assume the question is based on simple interest since you didn't specify

Using simple interest

Simple interest=P×R×T

Where,

P=principal=$1470

R=interest rate=4%=0.04

T=time=6 months=0.5 year

Simple interest=P×R×T

=1470×0.04×0.5

=29.4

Interest earned=$29.4

Answer:

BC ≈ 10.4 mm(1 decimal)

Step-by-step explanation:

The question forms a right angle triangle. The angle BAC = 90°. The side AB = 7.3 mm and the side CA = 7.4 mm. The length of BC can be solved below.

AC = opposite side = 7.4 mm

AB = adjacent side = 7.3 mm

BC = hypotenuse = ?

Using pythagoras theorem we can find the longest side which is the hypotenuse

c² = a² + b²(pythagoras formular)

where

c = hypotenuse side

BC² = 7.4² + 7.3²

BC² = 54.76 + 53.29

BC² = 108.05

square root both sides

BC = √108.05

BC = 10.3947101931

BC ≈ 10.4 mm(1 decimal place)

Answer:

There is a outlier and a negative relationship.

Step-by-step explanation:

negative shows that it goes from top to bottom and left to right (unless some numbers are switched around.) with this we also notice that there is a dot that is away from the group (the outlier)

Answer:B10

Step-by-step explanation: When they say the expression 5/12 of 24, they were asking you to divide 5 by 12 and then multiply the amount by 24.

If you found this answer helpful, give it a five-star rating and a thanks!

(Even a brainliest if you feel like it! ;D)

Answer:

10

Step-by-step explanation:

Answer:

x = [tex]\frac{ab}{b+a}[/tex]

Step-by-step explanation:

Given

[tex]\frac{x}{a}[/tex] + [tex]\frac{x}{b}[/tex] = 1

Multiply through by ab to clear the fractions

bx + ax = ab ← factor out x from each term on the left side

x(b + a) = ab ← divide both sides by (b + a)

x = [tex]\frac{ab}{b+a}[/tex]

Answer:

[tex]f(3) = f(3 - 2) \times f(3 - 1)[/tex]

[tex]f(3) = f(1) \times f(2)[/tex]

[tex]f(3) = 4 \times 25[/tex]

[tex]4 \times 25 = 100[/tex]

12 is the measure of the value of f(3).

Based on the given information, we have f(1) = 4 and f(2) = 25.

To determine the value of f(3), we will use the recursive formula

f(n) = f(n - 2) * S(n - 1), where:

S represents the successor function.

Determine f(3):

f(3) = f(3 - 2) * S(3 - 1)

f(3) = f(1) * S(2)

f(3) = 4 * 3

f(3) = 12

Therefore, the value of f(3) from the sequence is 12.

Learn more on sequence here: https://brainly.com/question/7882626

#SPJ2

Answer:

The third one i think. They are separate.

Step-by-step explanation:

Answer:

C: Flipping two coins, one at a time.

Explanation:

A, B, and D all include all different objects like Cards, Marbles, and Letter tiles. These are all items of quantity. Flipping two coins is independent because they are singular objects (that aren't inside of a bag or a hat).

Answer:

First choice :

[tex] \frac{ {x}^{14} }{ {y}^{18} } [/tex]

Hope this helps...

Answer:

30 inches/4=7.5 inches

Step-by-step explanation:

Answer:

7.5 inches

Step-by-step explanation:

Since we need 4 magnets and we use 5/6 yards, it is easier to convert 5/6 yards into inches first. One yard=36 inches, so we used overall of 30 inches for every magnet. Simply divide 30/4 to get 7.5 inches