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You got the first part of your question about right, except the proper way of doing it mathematically would be like this:

1- Since they have agreed to charge her a simple interest rate of 4% per annum, then she will pay=$,3,380 X 4%=$135.20 per year. But, because it's for 3 year, we just multiply that amount by 3, and we get: $135.20 X 3=$405.60. So that the total amount she will pay them will be: $3,380 + $405.60=$3,785.60. And that's it.

2- Remember they told her that they would charge her 4% annual interest rate

    In simple interest, which means NOT componded. So, your calculations in 2 are wrong. The total amount she will owe them is the one I calculated in (1) above. And that is all there is to it.

m^2 = 48    take pos/neg roots of both sides

m =  (pos/neg) sqrt(48)  =  (pos/neg) 4 * sqrt(3) 

3*42-2(10^2-9^2)  = 126 - 2(100 -81) = 126 - 200 + 162 = 88

AB and CD intersect at E. If measure of angleAEC=5x-20 and measure of angleBED=x+52, find measure of angleCEB? Someone please explain it to me step by step.

 C                            B

               E

A                             D

Angle AEC  and angle BED are vertical angles....thus they are equal.....so we have....

5x - 20  = x + 52        add 20 to both sides, subtract x from both sides

4x  = 72       divide both sides by 4

x = 18

So  AEC   measures     5(18)  - 20   = 70 degrees

And CEB is suppplemental to AEC.....so it measures 180 - 70   = 110 degrees

m^2 = 48   Take the square root of both sides

m = SQRT 48 = 6.9282

1).....Using I = Prt  ..... the total interest paid at the end of 3 years = $3380 * .04 X 3 = $405.60

[She is being charged 12% interest [cumulatively ] on the purchase

2) The total amount paid = $ [3380 + 405.60] = $3785.60

....or you can use ratios perhaps to envision this a bit better:

114/x = 38/100   solve for x

114 (100/38)= x = 300

2/5 a box of blueberries is equal to 4/10 a box of blueberries....so 6/10s of a box is missing .  This means 6 people ate blueberries if each ate 1 tenth.

how do you work out a percentage on a calculator

Follow this procedure: For example, if you have 125 and you want to add 5% to it:

1- Press the "2nd" key and you should see the % key.

2-Enter your number, 125 and then press % key, followed by = key and that should give you the answer which should be 131.25.

how do you solve (2/1)/(3/2)?? thankful for help

The easiest way is to turn it into multiplication thus:

2/1 / 3/2=2/1 X 2/3=4/3=1 1/3 . Notice that when I turned it into multiplication, I fliped the second term upside down from 3/2 into 2/3.

(2/1)/(3/2)=   invert the second fraction and multiply numerators and denominators

(2/1) x (2/3)  =

4 / 3    

This could also be :

x² = 1    take the square root of both sides

x  = ( plus / minus)  1

what does X2 mean when it's in a equation like X2=1 ?

Divide both sides by 2 and we get:

x=1/2 which is your answer.

(-3)*7+(-2)*(-4)-(-8)*3-(-5)*(-6) =

-21 +  8 + 24 -30 =

-13 - 6  =

-19

(-3)*7+(-2)*(-4)-(-8)*3-(-5)*(-6)

The answer should be -19

If you want to follow step by step solution, then here it is:

Simplify the following:
-3×7-2 (-4)--8×3--5 (-6)
Multiply -3 and 7 together.
-3×7  =  -21:
-21-2 (-4)--8×3--5 (-6)
Multiply -2 and -4 together.
-2 (-4)  =  8:
-21+8--8×3--5 (-6)
Multiply -1 and -8 together.
-(-8)  =  8:
-21+8+8×3--5 (-6)
Multiply 8 and 3 together.
8×3  =  24:
-21+8+24--5 (-6)
Multiply -1 and -5 together.
-(-5)  =  5:
-21+8+24+5 (-6)
Multiply 5 and -6 together.
5 (-6)  =  -30:
-21+8+24+-30
Group the positive and negative terms in -21+8+24-30 together and factor out the minus sign.
-21+8+24-30 = (8+24)-(21+30):
(8+24)-(21+30)
Evaluate 8+24 using long addition.
| 1 |
| 2 | 4
+ |  | 8
| 3 | 2:
32-(21+30)
Evaluate 21+30 using long addition.
| 3 | 0
+ | 2 | 1
| 5 | 1:
32-51
Factor out a negative sign in 32-51 in order to subtract.
32-51  =  -(51-32):
-(51-32)
Subtract 32 from 51.
| 4 | 11
| 5 | 1
- | 3 | 2
| 1 | 9:
Answer: | 
| -19

I believe what you meant to say, is 'what does the fox say' and I believe it says:

Ring-ding-ding-ding-dingeringeding!
Gering-ding-ding-ding-dingeringeding!
Gering-ding-ding-ding-dingeringeding!
Then:
Wa-pa-pa-pa-pa-pa-pow!
Wa-pa-pa-pa-pa-pa-pow!
Wa-pa-pa-pa-pa-pa-pow!
Then:
Hatee-hatee-hatee-ho!
Hatee-hatee-hatee-ho!
Hatee-hatee-hatee-ho!
Then:
Joff-tchoff-tchoff-tchoffo-tchoffo-tchoff!
Joff-tchoff-tchoff-tchoffo-tchoffo-tchoff!
Joff-tchoff-tchoff-tchoffo-tchoffo-tchoff!
Then the guy sings and then:

Jacha-chacha-chacha-chow!
Jacha-chacha-chacha-chow!
Jacha-chacha-chacha-chow!
Then:
Fraka-kaka-kaka-kaka-kow!
Fraka-kaka-kaka-kaka-kow!
Fraka-kaka-kaka-kaka-kow!
Then:
A-hee-ahee ha-hee!
A-hee-ahee ha-hee!
A-hee-ahee ha-hee!
And finally:
A-oo-oo-oo-ooo!
Woo-oo-oo-ooo!

(I love that song btw, it's so catchy)

tan(pi/2) is infinite, so log(tan(pi/2)) is also infinite.

Hi Miss Melody, the pics are great :) And I too, cannot upload any pics :( Or even delete my messages :( Can someone speak to the guy in charge plz? 

5x=15625 Divide both sides by 5,

x=15625/5

x=3,125 which is your answer.

what is the angle formed when the opposite is 175mm and the adjacent is 300mm?

Tan=175/300=.58333

Atan=30.256 degrees. That's the angle formed.

-10+-10=-20

What is 4 to the power of 4 divided by 3

(4^4)/3=256/3=85 1/3

what is the value of log(tan(pi/2)

tan(pi/2)=tan(1.5708)

                tan=(.02742)

Log(.02742)=-1.5619

what is -4 x + 5?=-4x + 5. It's irrudcible

2x^2 ( that's the answer)