Mathematics High School

The width of a rectangle measures (3c-9d)(3c−9d) centimeters, and its length measures (8c-2d)(8c−2d) centimeters. Which expression represents the perimeter, in centimeters, of the rectangle?


HELP

Answers

Answer 1

-22d + 22c

Step-by-step explanation:

Answer 2

The expression for the perimeter of the rectangle is 2(11c - 11d)

Perimeter of a rectangle = 2(length + width)

Length = 3c - 9d

Length = 3c - 9d Width = 8c - 2d

The expression for the perimeter can be expressed thus :

2(3c - 9d + 8c - 2d)

Collect like terms :

2(3c + 8c - 9d - 2d)

2(11c - 11d)

Hence, the expression for the perimeter of the rectangle is 2(11c - 11d)

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Related Questions

Solve the following equation. Show your work for credit.
3х -40 = 1/2x + 35

Answers

Answer:

x=30

Step-by-step explanation:

Let's solve your equation step-by-step.

3x−40=12x+35

Step 1: Subtract 1/2x from both sides.

3x−40−12x=12x+35−12x

52x−40=35

Step 2: Add 40 to both sides.

52x−40+40=35+40

52x=75

Step 3: Multiply both sides by 2/5.

(2/5)*(5/2 x)=(2/5)*(75)

x=30


I need help please!! Can’t figure this out

Answers

Answer:

-6( 2-r ) = 42

-12 + 6r = 42

6r = 42 + 12

6r = 54

r = 9

The sales of Horizon, a cell phone sales and service provider, were $127,693,100 last year. What is the value of the 6th digit in this number?

Answers

Answer:

600000

Step-by-step explanation:

Cuz it is in the 100000 spot

Answer:

600000

Step-by-step explanation:

Based on the place value system, the digits are ordered from the right to left. So the 6th digit is 6 located in the hundreds of thousands column. The value of the 6th digit is obtained by multiplying the digit by the value of it's place value column

i.e 6 * 100,000 = 600, 000

Ans: 600,000

Find the value of cos Q rounded to the nearest bundredth, if necessary,

Answers

Answer:

0.44

Step-by-step explanation:

Cosine is equal to the adjacent side divided by the hypotenuse.

For Q' this would be 11/25. 11/25=0.44

b+6/4 when b=1.5???????????????????????

Answers

Answer:

3

Step-by-step explanation:

How many weeks will you need to save so that you have a total of $225?

What would the equation be, and how would I graph it?
I give Brainliest to the first person!

Answers

35 + 10*19 = 225

19 weeks

The length of each side of a square is halved. What
fraction of the original perimeter is the new perimeter?

Answers

Answer:

[tex]\frac{1}{2}[/tex]

Step-by-step explanation:

Halving the side of the square, results in the perimeter being halved.

new perimeter = [tex]\frac{1}{2}[/tex] original perimeter

(2×)(ײ)+(2×)(×)+(2×)(-2)+(3)(ײ)+(3)(×)+(3)(-2) simplified

Answers

Answer:

2x^2 + 5x^2 - x - 6

-3(x² +2x-3)+3(x²+4x)​

Answers

6x + 9

I hope this helps!

Answer:

= 6x +9

Step-by-step explanation:

1. you need to multiply -3 by x² + 2x - 3

so you got -3x² -6x + 9

2. Then, you need to multiply 3 by (x²+4x)

= 3x² + 12x

3. -3x² - 6x + 9 + 3x² + 12x

4. then you need to solve with the same

= - 3x² + 3x²

= 0

= - 6x + 12x

= 6x

5. lastly you will got the answer.

# = 6x +9

Solve the absolute value inequality |4x+7|-2|-x-2|≥2x+3

Answers

X= any real number :))

17. Find the value ofC in the formulac C- (1-32), when f=95.
18. The three anggles of a triangle are at the ration of 1:3:5, what is the magnitude of the largest
angle?

Answers

The largest angle is 5/9 of the total which in a triangle is 180 degrees
5/9 x 180 = 100 degrees

Is it possible for any angle A, sinA=7/5Explain.​

Answers

Answer:

No

Step-by-step explanation:

note [tex]\frac{7}{5}[/tex] = 1.4

and  sinA is defined for - 1 ≤ sinA ≤ 1

Thus sinA ≠ [tex]\frac{7}{5}[/tex]

32°
X х
Х
x =
degrees

Answers

Answer:

x = 74 degrees

Step-by-step explanation:

180 - 32 = 148

148 / 2 = 74

M is between N and O and NM = 25, MO = 3x - 5, and NO = 5x + 2.
Find x=

Answers

Answer:

N____M____O

NO= NM + MO

(5x+2)=25 + (3x-5)

5x+2=3x +20

5x– 3x = 20 – 2

2x= 18

x=18/2

x=9

If you want (NO , MO )this is the solution

NO= 5x+2=5(9)+2=45+2=47

MO= 3x-5=3(9)-5=27-5=22

I hope I helped you^_^

what is the quotation of 9÷1/2​

Answers

Answer:

18

Step-by-step explanation:

9 ÷ [tex]\frac{1}{2}[/tex]

leave 9, change ÷ to × and turn fraction upside down

9 × [tex]\frac{2}{1}[/tex] = 9 × 2 = 18

Answer:

18

Step-by-step explanation:

If you meant, what is the quotient of 9 ÷ 1/2 we get:

[tex]9/\frac{1}{2}=\\\\9*\frac{2}{1}=\\\\\frac{18}{1} =\\\\18[/tex]

Someone help me please

Answers

Answer:

(5,1) is the mid point of RS

plz tell the answer right now. plz plz ​

Answers

Answer:

1. Alternate.

2. cointerior.

3. corresponding.

hope this will help u :)

Fig. 1: Alternate angle

Angles in ' Z ' shape are called alternate angle

Fig. 2: Interior angle

Angles facing each other on the inside are called interior angle

Fig. 3: Corresponding angle

Angles in ' F ' shape are called corresponding angle

Hope it helps......

evaluate f(6) when f(x) = 2x + 4

Answers

Answer:

16

Step-by-step explanation:

f(x) = 2x + 4

f(6) = 2(6) + 4

=> f(6) = 12 + 4

=> f(6) = 16

Please help!! Complete the function table for f(x)=x-8
​

Answers

Answer:

-8 , -3 , 2

Step-by-step explanation:

f(x) = x-8

f(0) = 0 - 8 = -8

f(5) = 5-8 = -3

f(10) = 10 - 8 = 2

25/v^2-10/v+1+2+3+4+5

Answers

The simplified form

Part E
Now check your work by using the GeoGebra geometry tool to repeat parts A through D. Open GeoGebra, and complete each step below. If you need help, follow these instructions for using GeoGebra. You will take a screenshot of your work when you are through, so be sure to clearly label your construction as you work.

Plot points A, B, and C, and draw a polygon, ΔABC, through the points.
Draw a line perpendicular to A⁢C¯ through point B.
Label the intersection of the line perpendicular to A⁢C¯ through B and A⁢C↔ point D.
Measure and display the slopes of A⁢C↔ and B⁢D↔.
Display the equations of A⁢C↔ and B⁢D↔ in the Algebra margin.
Measure and display the lengths of A⁢C¯ and B⁢D¯.
Calculate and display the area of ΔABC.
Take a screenshot showing the geometric construction and the Algebra margin, save it, and insert the image in the space below.

Part F
Compare the calculations displayed in GeoGebra with the calculations you completed in parts A through D. Look in the Algebra margin too. Do the results in GeoGebra match the results you obtained earlier? If not, where do the discrepancies occur? You might have to rearrange equations algebraically to determine whether two equations match.

Part G
You’ve seen two methods for finding the area of ΔABC—using coordinate algebra (by hand) and using geometry software. How are the two methods similar? How are they different? Why might coordinate algebra be important in making and using geometry software?

Answers

Answer:Hopefully this is how you do it sorry if i am wrong

Step-by-step explanation:

 If P={1,2,3,5,7} ,Q={1,3,6,10,15}. Then the cardinal number of P∩Q is​

Answers

Answer:

pppp

Step-by-step explanation:

ppppp

Can someone help me with this proportion? I'm really bad at math:
'Jill burns 200 calories in a 3/4 hour workout. How many calories will she burn in a 3 hour workout?'

Answers

Answer: 800 calories

Step-by-step explanation:

Let us set this up as a fraction

Firstly, convert 3/4 into a decimal

[tex]3 \div 4 = 0.75[/tex]

Now we can set up the fraction

Make sure to put the calories on the same side and hours on the same side as well. So it should be: [tex]\frac{200}{0.75}=\frac{x}{3}[/tex]

Then, solve

[tex]\frac{200}{0.75}=\frac{x}{3}[/tex]

The fractions are supposed to be proportional meaning, if the denominator is a certain number when solved, the numerator should be the same, if solve likely. let me show you:

Divide 3 by 0.75

[tex]0.75 \div 3 = 4[/tex]

Now since the number isn't found yet, we will use the opposite operation, which is multiplication, in this case.

Multiply 200 to 4

[tex]200 \times 4 = 800[/tex]

Therefore, she will burn 800 calories in a 3-hour workout.

which of the following situations describes a postive number

Answers

Answer:

B. Going up the elevator 14 floors

Step-by-step explanation:

Choice A can't be right because you are going below sea level (negative).

Choice C can't be correct either because the word "losing" let's you know that it's negative.

Choice D isn't right because if you are taking $20 from your checking account, it would be a negative number.

Hope this helps!

help plsplspls ?????

Answers

Answer:

D

Step-by-step explanation:

hopefully the answer is clear and understandable

:)

A gardener plants 20 trees in a straight line. The trees are 5 m apart. What is the distance between the first tree and the last tree.

Answers

Answer:

100m

Step-by-step explanation:

If the distances between all the 20 trees are equal,

Then 5m*20trees=100m

what comes next in the sequence? -2, 1, 4, __, __, __

Answers

i want to say 8,16 24 or it could be 3,2,1 or 4,5,6

Answer:

-2, 1, 4, (4 + d) , (4+d+d) , (4+d+d)

We have to first get the common difference

[tex]d = a _{2} - a_{1} \\ d = 1 - ( - 2) \\ d = 1 + 2\\ d = 3[/tex]

Therefore sequence is:

-2, 1, 4, (4 + 3) , (4+3+3) , (4+3+3+3)

Answer: -2, 1, 4, 7 , 10 , 13

Add -6+(-3)=. 3+(-4)=

Answers

Answer:

-6+(-3) OR -6-3= -9

3+(-4)= -1

Step-by-step explanation:

if u nee me to explaiin, jus say thet .

A fish tank is the shape of a cube. It's volume is 125 ft3. What is the area of one face of the tank

Answers

Volume of cube =l3
125ft 3=l3
Cube root 125 =l
L=5
The area of one face of the tank is 5ft4

How do i find the x and y intercepts for x^2+y^2=20?​

Answers

No matter the equation…

To find x-intercepts, set y=0 and solve for x.

To find y-intercepts, set x=0 and solve for y.

That will always be true (at least on x-y graphs).
「x intercept」
x²＋0＝20
x²＝20
x＝±2√5

「y intercept」
0＋y²＝20
y²＝20
y＝±2√5

Hope my answer helped u :)
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