What mathematical operation is used with scaling/dilations?

Answer:

4

Step-by-step explanation:

The constant in an algebraic expression is the term that is not changeable and does not include any variables. Therefore, the constant in the expression of 7a -4 is 4. As 4 does not have any variables nor is it changeable.

Answer:

3/8

Step-by-step explanation:

72-45 gives 27 which is how many marks missed 27 and 72 both go into nine which is the highest common factor. 27/9=3 72/9=8 so its 3/8

Answer:

Step-by-step explanation:

(72-45)/72 = 27/72 = 3/8

Answer:

Problem:

180-144=36

36/2=18

A=18

Step-by-step explanation:

The full area of half of a circle is equal to 180 degrees. To find the missing value of both A's you must take the full degrees of 180 and subtract 144 from 180. Next you have to take the remaining number and divide it by two because both of the missing value's are equivalent.

Answer:140.63

Step-by-step explanation:

11.25 x 12.5= 140.625

Answer:

49h^2 - k (28h - k)

Step-by-step explanation:

49h^2 - 28hk + k^2

49h^2 - k (28h - k)

Answer:

C. 3.4

Step-by-step explanation:

We need to find expected value, which is essentially the value that we expect to get based on the amount of each "thing" at hand.

Here, we have 4 multiple-choice questions worth 3 points each and 2 true/false questions worth 1 point each. Each multiple-choice question has 5 possible answers, so the probability that you get that multiple-choice question correct is 1/5. Similarly, each true/false question has 2 possible answers, so the probability that you get that question right is 1/2.

Expected value, denoted by E(x), has the formula:

E(x) = ∑ xp(x), where x is the number of points you get per problem here and p(x) is the probability of getting the problem correct

E(x) = 4 * 3 * (1/5) + 2 * 1 * (1/2) = 12/5 + 1 = 17/5 = 3.4.

The answer is thus C.

Answer:

C. 3.4

Step-by-step explanation:

P(correct MCQ) = ⅕

P(correct T/F) = ½

4×3×⅕ + 2×1×½

2.4 + 1

3.4

Answer:

According to the numbers provided, the sequence is:

5, 6, 1, 4, 7, 3, 2

Solution of the two lines intersecting in the graph is answer B

The inequality that represents the graph is that of answer A

Step-by-step explanation:

First problem:

This is the sequence to solve for "x" once the substitution was made;

[tex]3x +2\,(x+3)=11\\3x+2x+6=11\\5x+6=11\\5x=11-6\\5x=5\\x=1\\[/tex]

Now that we know x, we use its value (1) in the substitution equation in order to find "y" and complete the ordered pair:

[tex]y=x+3\\y=1+3\\y=4[/tex]

Then the solution pair (x, y) is: (1, 4)

Therefore, according to the numbers provided in the list of possible steps, the order is:

5, 6, 1, 4, 7, 3, 2

Second problem:

The solution to the system is where the two lines two lines intersect: "the point -1.5 on the x axis. Notice that -1.5 can be written in fraction form as -3/2, this is the x-coordinate of the intersection point. The y-coordinate is y-0 since the point is on the x-axis. Therefore the point is (-3/2, 0) which is given by answer B).

Third problem: The boundary line seems to go through the points: (-4, -10) and (0, -2), so we can calculate the slope via the equation:

[tex]slope=\frac{y_2-y_1}{x_2-x_1} \\slope=\frac{-2-(-10)}{0-(-4)}\\slope=\frac{8}{4}\\slope=2[/tex]

since the line's y-intercept is (0, -2), then the equation of the boundary line in slope-intercept is:

[tex]y=2x-2[/tex]

Since the shaded region includes the boundary line and the zone above it (with y-values larger than or equal to those point in the line), we can say that the inequality that represents this graph is:

[tex]y\geq 2x-2[/tex]

which corresponds to answer A

Answer: A

Step-by-step explanation: use the formula

Answer:

-47, i think

Step-by-step explanation:

whenever i think of doing stuff with a bunch of signs just remember that a negative and a positive cancel out to be just a negative so the equation is really just -7-40.

Answer:

$660.60

Step-by-step explanation:

55.05x12

Annual means yearly and a year is 12 months.

Answer:

B) 24470.36

I don't know A)

sorry

Answer:

1547.085966 (rounded to the nearest whole number) - 1547

Step-by-step explanation:

Use the exponential decay formula

y = a (1 - b)^x

y =2700(1 - 0.06)^9

y = 1547.085966 ~ 1547

Answer:

28.64862

Step-by-step explanation:

Answer:

28.64862

Step-by-step explanation:

That's the work in the picture

Move the decimal 5 places instead of 3

Answer:

If 6 apples cost $1.98 then 20 apples cost

Step-by-step explanation:

First you want to find the unit rate so divide both numbers

so the answer is 3

Answer:

$6.60

Step-by-step explanation:

6 apples=$1.98

So, 6 times 3= 18 apples

That means you also have too multiply the price by 3 and 1.98 times 3=5.94

now you have 18 of the 20 apples

for the last two, simply divide 1.98 by three which= $.66

then add $.66 to $5.94 and get $6.60

Answer:

For tree see picture but instead of BG replace all values with RRBBB and see the notes above how to roate the colours instead of the shape roation below just do transition (0,0)(1,0) (1,1).

Then 13 colours minimum change.

This will be 3 + 5 + 4 each colour change = 12 each colour change. instead of doing the 56 each colour rotation below.

Step-by-step explanation:

make 4 bits of paper and label each side -1 and 1 and central 0

above central point vertically label 1 and -1 for transition.

Then change just top one 4x = 4 more

Do the same with 2nd from top = 8 more to include top changing 4x again.

Do the same with 2nd from bottom = 12 more

Do the same with bottom = 16 more.

4+8+12+16 =40

Then repeat the process on side for blocks and we can double up

40+40 = 80.

When drawing tree clearly state columns

Top two are red only change

Top of tree will read in order so where ever you see capital R you will know its a new column for the tree and fill in when you understand the 254 transitions of a 5 column tree. Then change B + R accordingly when you get to row 6. Here you just start changing blue back to the top after row 5

Columns go down and rows go across its a new row you will need

approx 5-6 rows each colour change.

For the ones started for you below its just transition and colour stays where it is.  

R x    RT 45d   RT (1,0) 45   RT (1,1) 45  RT (1,0)

R x    R x

B x    B x

B x    B x

B x    B x

'x' = RED Normal as you keep 0 zero central on all 4 bricks and work with top row as explained below.

Top RED  brick you have to Right side place transition on every 2nd column for each colour and thenyou should find a pattern if youve numbered your papers or brcks to just see how it works. (hanging out one side call this 'off set' or call it T for transition (1.0)

RED Central 'diagonal' call it  '45 degree rotate'

E ABCD RED Normal edge transition its edge so it hangs out

E ABCD RED On edge 45 degree diagonal its edge so it hangs out

2nd only change

S ABCD 1st red normal 2nd red Right side place rotate

S ABCD 1st red right side rotate 2nd red 45 degree rotate

S ABCD 1st red right side rotate 2nd central place 45 degree rotate  

S ABCD 1st red right side rotate 2nd edge Normal edge transition

S ABCD 1st red right side rotate 2nd 45 degree its edge diagonal

2nd is repeated by changing 1st 4x more in bold. see what is now missing for 1st red. and copy the 2nd changes to 1st all whilst rotaing 2nd again in change .

Copy paste the work

Then apply this to 3 + 4 + 5th brick.

As the above shows 10 and when you finish 2nd and 1st it will be 14 total

Then 3 will be 14 again

and 4th brick will be 14 again

and 5th brick will be 14 again

making the transitions and rotations where all bricks in same level placement

14 x 4 = 56 transitions/rotations

Then repeat again for 1 blue at the top change

Then repeat again for 2 blue at the top for change

Then repeat again for 2 blue in the top middle

Then repeat again for 2 blue in the bottom middle

You can label tree

RR = Red rotation

BR = Blue rotation

RRE= Red rotation edge

BRE = Blue rotation

and colour code blue and red pens.

You can label transitions

RT = red transition (1,0)

RT = red transition (1,1) for central

and same for blue etc..

The end result will be 56 x 4 = 224 diagram tree

On ce you learn this it will take just 6 minutes to write out.

Answer:

i would take 60 red beads.

Step-by-step explanation:

90 / 18 = 5

5 x 12 = 60 red beads

Answer:

7/12

Step-by-step explanation:

Answer:

its 21 am I right ......

Answer:

5/6

Step-by-step explanation:

Answer:

7.5 pages

Step-by-step explanation:

We are given that Mark reads 15 pages in two days. We only need to divide 15 by 2.

15 ÷ 2 = 7.5

Mark should read 7.5 pages per day.

Mark can read 7 and half page in 1 day.

Look at the attached picture

Hope it helps...

good luck on your assignment

Answer:

D

Step-by-step explanation:

Answer: the answer is i

Answer

B

Step-by-step explanation:

i already did this

Answer:

B

Step-by-step explanation:

Answer:

(5(7)) + 4

Step-by-step explanation:

It shows in the parentheses it is 35 + 4  = 39

Answer:true

Step-by-step explanation:

Because to find circumference is pie(3.14) times 34 should equal about 107 if rounded

Answer:

Slope = -8.000/2.000 = -4.000

 x-intercept = -31/4 = -7.75000

 y-intercept = -31/1 = -31.00000

Step-by-step explanation:

1: Graph of a Straight Line

2: Calculate the Y-Intercept

3: Calculate the X-Intercept

4: Calculate the Slope

5: Geometric figure: Straight Line

Answer: Slope = -8.000/2.000 = -4.000

Hope this helps.

Answer:

-4

Step-by-step explanation:

Answer:

  5 + y = -2

Step-by-step explanation:

To get 5 more than a number, you need to add 5 to the number. Then "5 more than y" is "5+y" or "y+5".

In math, "is" means "is equal to."

5 more than a number y is negative 2 means ...

  5+y = -2

Answer:

[tex]5 + y = ( - 2)[/tex]

Step-by-step explanation:

Five more than a number means,

[tex]5 + y \: \: \: \: or \: \: \: \: y + 5[/tex]

is means equal to.

[tex] = [/tex]

is negative 2

[tex] = - 2[/tex]

Now let's create the equation,

5 more than a number y is negative 2

[tex]5 + y = (- 2)[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Answer:

1. 7x+5y=19    

(+)-7x-2y=-16       step one

____________

[tex]\frac{3y}{3\\}[/tex]=[tex]\frac{3}{3}[/tex]                   step two

y=1

____________

since you have the value of y u can plug it in in either of the equations.

7x+5(1)=19        step three

____________

7x+5-5=19-5     step four

____________

[tex]\frac{7x}{7}[/tex]=[tex]\frac{14}{7}[/tex]

x=2                     step five

____________

You can check whether the answers are correct by plugging them back in.

7(2)+5(1)=19

14+5=19

19 equals 19 so it checks.

You can do the same thing for the rest.

Answer:

3. AGH= 150

4. CHF= 110

Step-by-step explanation:

3. AGH corresponds to CHF, so they equal the same. AGH = 150

4. BGE is vertical to AGH, so they equal the same AGH = 110. AGH corresponds to CHF, so they equal the same. CHF=110.

Answer:

3. 150. 4. 110

Step-by-step explanation:

This should be right.

Answer: here is an attachment of the answer, hope it helps you out

Answer:

V=264

Step-by-step explanation:

♡Rectangular prism= 12×5×4=240

♡Triangular prism= 5×3×4×4=24

♡240+24=264

Hopefully that helps!

and hopefully I did it right!

I tried my best!!

The volume of the trapezoidal prism comes to be 312 cubic units.

The volume of a prism is the product of the base area and its height.

So, the volume of the given prism = area of trapezoidal base * height

Area of the trapezoidal base = 0.5 * (sum of parallel sides) * distance between parallel sides.

Area of the trapezoidal base =0.5 * (8+5) * 4

Area of the trapezoidal base =26 square unit

So, the volume of the given prism = 26*12 = 312 cubic units.

Hence, the volume of the trapezoidal prism comes to be 312 cubic units.

To get more about prism visit:

https://brainly.com/question/23963432

Answer:

[tex]\huge\boxed{\sqrt{11-6\sqrt2}=3-\sqrt2}[/tex]

Step-by-step explanation:

[tex]\sqrt{11-6\sqrt2}=(*)\\\\11=9+2=3^2+(\sqrt2)^2\\6\sqrt2=(2)(3)(\sqrt2)\\\\(*)=\sqrt{3^2-(2)(3)(\sqrt2)+(\sqrt2)^2}\\\\\text{use}\ (a-b)^2=a^2-2ab+b^2\\\\=\sqrt{(3-\sqrt2)^2}\\\\\text{use}\ \sqrt{a^2}=|a|\\\\=|3-\sqrt2|=3-\sqrt2\\\\^{\text{because}\ 3>\sqrt2\to3-\sqrt2>0}[/tex]

Answer: -14°F

Step-by-step explanation:

(0-55) + 41

(^For phone calculator)

Hey!!!!

Here's your answer

The missing factor is (2n^2-4)

Hope it helps.

Good luck on your assignment