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Simplify the following:
-5 (-6)--4×10

-5 (-6)  =  30:
30--4×10

-(-4)  =  4:
30+4×10

4×10  =  40:
30+40

Answer: | 70

Let the angle be =x

Sin(x)=21/30 =0.7

x=arcsin(0.7) =44.427 degrees.

compilation of its have different errors..... am totally confused!!

Please help me i need an anwser to this question

Total square feet  * amount per square foot  =

90 * 7  * 1/2  = 

45 * 7  =

315 fluid ounces

There are a number of ways of solving this problem, using TVM formulas.However, there is a special formula that is rarely used and which was derived for this type of financial problems. It goes something like this:

Payment x [(rate of monthly increase^40 - interest rate^40) / (rate of increase - interest rate)]=1,000,000.
P*[(1.1^40 - 1.07^40) / (.10 - .07)]=1,000,000, solve for P
P=$990.60 The nurse's initial deposit.

A hexagon is a two-dimensional object.....it doesn't have a "volume".....I think you might mean "area"......if so.....the area  is composed of six congruent triangles, each with a base of s [where s is the side length] and a height of   √3s /2 .......so, the area = 

  6*(1/2)* s * √3s /2  =

[3√3] s²  / 2       where s is the side length

By the Angle Bisector Theorem :

DB/CD = AB/AC

2.7 /CD  = 6.2/5.8   rearrange to solve for CD

CD = (2.7)(5.8)/ 6.2  ≈  2.5

CORRECTION:

F=(G.2M)/d^2 SHOULD BE:F=(G.M^2)/d^2. THE RESULT OF THE CALCULATION IS ACCURATE.

two trucks with equal mass are attracted to each other with a gravitational force of 6.7 * 10 -4 N. the trucks are seperated by a distance 0f 3.0 m. What is the mass of one of the trucks?

F=(G.2M)/d^2

6.7e-4=[6.67428e-11 x M^2]/9

Solve for M:
0.00067 = 7.41587×10^-12 M^2

0.00067 = 7.41587×10^-12 M^2 is equivalent to 7.41587×10^-12 M^2 = 0.00067:
7.41587×10^-12 M^2 = 0.00067

Divide both sides by 7.41587×10^-12:
M^2 = 9.03468×10^7

Take the square root of both sides:
Answer: |  M = 9505.09 Kg=9.505 Metric tonnes

LSA = π × r × l, where r=Radius, l=Height

(X + Y) x 2

or 2 multiplied by x plus 2 multiplied by y

x = -1.666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666

$6120 at 0.12% per week, for 28 weeks, compounded weekly

FV=PV[1 + R]^N

FV=6120[1 + 0.12/52]^28

FV=6120 x 1.002307692^28

FV=6120 x 1.06666925

FV=$6,528.02

Thank you Sadpumpkin.

You have made my day.  

The answer is 9,600 but I am fairly sure that using a calculator will produce more accurate and fast results; just a suggestion.

(x+y)^2

(x+y)(x+y)

x^2 + 2xy + y^2

66/11 = 6

12

[6x(3-2)]x2

Cos(1) =0.99984769515639123915701155881391.........etc.

2x+2y

melody, i would like to say thank you, you are the reason i passed math 

I just found another link that I think will help you:

Area = 2pi*r*h.   where r is radius and h is height.

So: r = Area/(2pi*h)

r = 1106/(2pi*11) cm 

I'll leave you to crunch the numbers.