Which equation can be used to find the perimeter of a regular octagon with sides of length 12 m? A. P = 8 + 12 B. P = 8(12) C. P = 12 ÷ 8 D. P = 2(8) + 2(12)

QUESTION POSTED AT 18/01/2020 - 07:14 AM

Answered by admin AT 18/01/2020 - 07:14 AM

The basic definition of a perimeter is the boundary line of an object. For shapes and figures, this is basically the sum of the outermost sides that define the object. Since an octagon has eight sides, with each side measuring 12m, the perimeter can be obtained by multiplying 12 m by 8 sides, or in equation form:

P = 8(12)

Among the choices, this is letter B.
Post your answer

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ANSWERED AT 20/02/2020 - 11:21 PM


QUESTION POSTED AT 20/02/2020 - 11:21 PM

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If you estimate it the equation is -10+12=9+12=21 or 2=21=21 so the answer is false

ANSWERED AT 20/02/2020 - 11:21 PM


QUESTION POSTED AT 20/02/2020 - 11:21 PM

In 4 years, harry’s age will be the same as jim’s age is now. in 2 years, jim will be twice as old as harry will be. find their ages now.

The answer to this question would be:
Jim     =6 years
Harry =2 years

To answer this question, you need to translate the description into a  mathematical equation. If H= Harry's ages and J= Jim's ages, then the equation should be look like this:

1. H+4= J
2. (J+2)= 2(H+2)
     J+2= 2H+4
     J= 2H +2

If you put the 1st and 2nd equation together, the result would be:
H+4= J
H+4= (2H +2)
H-2H= 2-4
-H= -2
H=2

After that insert the H value to either 1st or 2nd equation.
H+4= J
2+4=J
J= 6

ANSWERED AT 20/02/2020 - 11:19 PM


QUESTION POSTED AT 20/02/2020 - 11:19 PM

If y = 3x -5 find the value of y when x = -1

Plug in negative 1 for x and do order of operations and u should get negative 8

ANSWERED AT 20/02/2020 - 11:18 PM


QUESTION POSTED AT 20/02/2020 - 11:18 PM

If x-y=8,find the value of y when x=3

3-y=8
-y=8-3
y=-5
so just try to re arrange the equation  to find the value for the variable

ANSWERED AT 20/02/2020 - 11:18 PM


QUESTION POSTED AT 20/02/2020 - 11:18 PM

How do i find 2/4of36?

Two forths is the same as one half ...so just take half of 36 which is 18

ANSWERED AT 20/02/2020 - 11:15 PM


QUESTION POSTED AT 20/02/2020 - 11:15 PM

Find the value of 2a 5b when a=-6 and b=2

2a = -12

5b = 10

Hope this helps
:)

ANSWERED AT 20/02/2020 - 11:14 PM


QUESTION POSTED AT 20/02/2020 - 11:14 PM

Find the nth term of this sequence -2 3 8 13 18

The nth term is 5n-7

ANSWERED AT 20/02/2020 - 11:14 PM


QUESTION POSTED AT 20/02/2020 - 11:14 PM

Decide whether the following rates are equivalent. 12 pages in 20 minutes or 20 pages in 32 minutes

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                (2) 20 pages / 32 minutes
We can reduce the fractions or rates to their lowest term by dividing the numbers by 4 such that,
                 (1) 3 pages / 5 minutes
                 (2) 5 pages / 8 minutes
Therefore, the rates are not equivalent. 

ANSWERED AT 20/02/2020 - 11:12 PM


QUESTION POSTED AT 20/02/2020 - 11:12 PM

Charles has 24 marble. he has 6 more yellow marbles than blue marbles. what is the equation

Answer:

Required Equations are x + y = 24 & x - y = 6

Step-by-step explanation:

let x be the no of yellow marbles that Charles has.

and y be the no of blue marbles that Charles has.

Total Marbles that Charles has = 24

⇒ x + y = 24 ..............(1)

Charles has 6 more yellow marbles than blue marbles.

⇒ x = y + 6

    x - y = 6 ......................(2)

Therefore, Required Equations are x + y = 24 & x - y = 6

ANSWERED AT 20/02/2020 - 11:12 PM


QUESTION POSTED AT 20/02/2020 - 11:12 PM

What improper fraction can be written as a whole number. 10/6 12\6 14\6 16\6?

12/6 can be written as 2 because 6 can go into 12 two times.

ANSWERED AT 20/02/2020 - 11:07 PM


QUESTION POSTED AT 20/02/2020 - 11:07 PM

Ill give a tip please explain the steps Use this table as a reference for your interest rate percentages. Secured Unsecured Credit APR (%) APR (%) Excellent 4.80 5.25 Good 5.15 5.65 Average 5.85 6.20 Fair 7.00 7.65 Poor 8.20 9.15 8. You (or your parents) purchase a new car for $19,725.00 plus 4.75% sales tax. The down payment is $2,175.00 and you (or your parents) have an average credit rating. How much interest is accrued after the first month? (2 points) 9. You (or your parents) purchase a used car for $15,867.00 plus 5.25% sales tax. The down payment is 10% of the total cost and you (or your parents) have an excellent credit rating. What is your principal balance at the start of the loan? (2 points) 10. You (or your parents) are debating about whether to buy a new car for $19,072.00 or a used car for $15,635.00. Sales tax is 4.5%. You (or your parents) plan to make a down payment of $1,200.00 and your credit rating is fair. What is the difference in interest accrued by the end of the first month? (

Divide the APR by 360 days and multiply it by 30 days to get the monthly interest. Each loan is usually secured by the car you bought. So we will use the secured APR.

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19,725 x 1.0475 =  20,661.94 - 2,175 = 18,486.94 loan amount
18,486.94 x 0.4875% = 90.12 accrued interest for the 1st month.

9. Excellent rating secured apr: 4.80% divide by 360 multiply by 30: 0.40% monthly rate
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15,867 x 1.0525 =  16,700.02 x 90% = 15,030.02 the principal balance at the start of the loan.

10. Fair rating secured apr: 7% divide by 360 multiply by 30: 0.5833% monthly rate
Cost of new car: 19,072 ; sales tax: 4.5% ; down payment: 1,200
Cost of used car: 15,365; sales tax: 4.5% ; down payment: 1,200

19,072 x 1.045 = 19,930.24 - 1,200 = 18,730.24
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15,365 x 1.045 = 16,056.43 - 1,200 = 14,856.43
14,856.43 x 0.5833% = 86.66 accrued interest

109.25 - 86.66 = 22.59 is the difference in interest accrued by the end of the first month.

ANSWERED AT 20/02/2020 - 11:06 PM


QUESTION POSTED AT 20/02/2020 - 11:06 PM

HURRY I'LL PICK A BRAINLIEST!!! Solve the equation for a. K = 4a + 9ab A. a = K(4 + 9b) B. a = 4(K + 9b) C. a = 4+9b/K D. a = K/4+9b

Answer:

Step-by-step explanation:

A

ANSWERED AT 20/02/2020 - 11:06 PM


QUESTION POSTED AT 20/02/2020 - 11:06 PM

$12,500 car , 3 3/4 % tax

Including the tax, the total would be $12,968.75

ANSWERED AT 20/02/2020 - 11:05 PM


QUESTION POSTED AT 20/02/2020 - 11:05 PM

Solve each system of equations by substitution Y=50x+4. Y-32x=40

Y=4+50x

Y=40+32x

Those are your answers

ANSWERED AT 20/02/2020 - 11:02 PM


QUESTION POSTED AT 20/02/2020 - 11:02 PM

Which of the following equations describe the line shown below? Check all that apply.

Here, slope (m) = y2 - y1 / x2 - x1
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m = 2 / 8
m = 1/4

Equation, y - y1 = m(x - x1)
y - 4 = 1/4 (x - 4)
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In short, Your Answers would be Option A & F

Hope this helps!

ANSWERED AT 20/02/2020 - 10:58 PM


QUESTION POSTED AT 20/02/2020 - 10:58 PM

Define equation. Give an example of two equivalent equations.

A statement that has mathematical expressions that are equal.
Examples:
2+1=3
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ANSWERED AT 20/02/2020 - 10:58 PM


QUESTION POSTED AT 20/02/2020 - 10:58 PM

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ANSWERED AT 20/02/2020 - 10:57 PM


QUESTION POSTED AT 20/02/2020 - 10:57 PM

Which of the following equations describe the line shown below? Check all that apply.

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Hope this helps!

ANSWERED AT 20/02/2020 - 10:57 PM


QUESTION POSTED AT 20/02/2020 - 10:57 PM

How do I solve the two step equation 4(x+8)=44

Since the problem is 4(x+8)=44 you will first need to distribute. 4 times x equals 4x. And 4 times 8 equals 32. So that leaves you with a neat problem, 4x+32=44. Next, you must subtract 32 from both sides. You need to do this to both sides to make she that they stay even. So minus 32 on both sides leaves the equation at, 4x=12. Lastly, you must divide both sides by four to get the x alone and the answer is 3. Hope this helped.

ANSWERED AT 20/02/2020 - 10:55 PM


QUESTION POSTED AT 20/02/2020 - 10:55 PM

Can any body help me on problem number 12 I'm stuck

They bought granola the most


5/6 = 10/12

10/12 > 1/12

ANSWERED AT 20/02/2020 - 10:54 PM


QUESTION POSTED AT 20/02/2020 - 10:54 PM

Use Gauss-Jordan elimination to solve the following linear system. x – 6y – 3z = 4 –2x – 3z = –8 –2x + 2y – 3z = –14 A. (–3,–2,4) B. (–2,–3,4) C. (5,3,–5) D. (–5,–3,3)

Just put the coefients in to a matrix

1x-6y-3z=4
-2x+0y-3z=-8
-2x+2y-3z=-14

  \left[\begin{array}{ccc}1&-6&-3|4\\-2&0&-3|-8\\-2&2&-3|-14\end{array}\right]
mulstiply 2nd row by -1 and add to 3rd
 \left[\begin{array}{ccc}1&-6&-3|4\\-2&0&-3|-8\\0&2&0|-6\end{array}\right]
divde last row by 2
 \left[\begin{array}{ccc}1&-6&-3|4\\-2&0&-3|-8\\0&1&0|-3\end{array}\right]
multiply 2rd row by 6 and add to top one
 \left[\begin{array}{ccc}1&0&-3|-14\\-2&0&-3|-8\\0&1&0|-3\end{array}\right]
multiply 1st row by -1 and add to 2nd
 \left[\begin{array}{ccc}1&0&-3|-14\\-3&0&0|6\\0&1&0|-3\end{array}\right]
divide 2nd row by -3
 \left[\begin{array}{ccc}1&0&-3|-14\\1&0&0|-2\\0&1&0|-3\end{array}\right]
mulstiply 2nd row by -1 and add to 1st row
 \left[\begin{array}{ccc}0&0&-3|-12\\1&0&0|-2\\0&1&0|-3\end{array}\right]
divide 1st row by -3
 \left[\begin{array}{ccc}0&0&1|4\\1&0&0|-2\\0&1&0|-3\end{array}\right]

rerange
\left[\begin{array}{ccc}1&0&0|-2\\0&1&0|-3\\0&0&1| 4\end{array}\right]

x=-2
y=-3
z=4
(x,y,z)
(-2,-3,4)

B is answer

ANSWERED AT 20/02/2020 - 10:54 PM


QUESTION POSTED AT 20/02/2020 - 10:54 PM

Find the amount paid for the loan. $1500 at 9% for 2 years

Assuming simple interest

I=PRT
Interset=principal times rate times time

principal=1500
rate=9%=0.09
time=2


I=1500 times 0.09 times 2
I=1500 times 0.18
I=270

interest=270
total is 1500+270=1770 total paied

ANSWERED AT 20/02/2020 - 10:53 PM


QUESTION POSTED AT 20/02/2020 - 10:53 PM

Find area of a rectangle with vertices -9,3 -9,-7 -6,-7 and -6,-3

4 times 3 equals 12.

ANSWERED AT 20/02/2020 - 10:53 PM


QUESTION POSTED AT 20/02/2020 - 10:53 PM

Five less than one fourth of my age is 12

X/4 -5=12
X/4=17
X=17*4
X=68
Mr. Enigma is 68 years old

ANSWERED AT 20/02/2020 - 10:53 PM


QUESTION POSTED AT 20/02/2020 - 10:53 PM

Five less than one fourth of my age is 12

1/4x-5=12
1/4x=17
x=68

ANSWERED AT 20/02/2020 - 10:53 PM


QUESTION POSTED AT 20/02/2020 - 10:53 PM

How do you find speeds if you do not know the distance, but only the time

By using this example you be able to do it

ANSWERED AT 20/02/2020 - 10:51 PM


QUESTION POSTED AT 20/02/2020 - 10:51 PM