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2 + 2 = 4 because if you start at 2 and then you move 2 spaces towards the bigger numbers then that would = 4.

...it is an equilateral trinagle.  all angles are 60 degrees

Lets first expand -3 x 4. This is the expanded form: -3 + (-3) + (-3) + (-3).

First you have to add, -3 + (-3) = -6 since basically you subtracting -3 - 3 which on a number line you would be moving back 3 spaces. So that would equal -6. Next you must do -6 - (-3) = -9 which you are doing the same thing, moving back 3 spaces on a number line. Repeat that another time. Finally -9 + (-3) = -12.

So the solution to the problem is -12.

First of all 5^4 = 5 x 5 x 5 x 5 

So 5 x 5 = 25. The multiply 25 by 5 = 125. Finally you have to multiply 125 by 5 = 625.

The solution to the problem is 625.

there is no option for radical 128

Example:   sin(Angle)   =  opposite / hypotenuse

If the   angle = 40°  and   the opposite side = 10   and   the hypotenuse is unknown:

--->   sin(40°)  =  10/x

--->   x · sin(40°)  =  10                  (multiply both sides by x)

--->   x  =  10 / sin(40°)                 (divide both sides by sin(40°))

--->   x  =  15.6

Use the Pythagorean Theorem:  c²  =  a² + b²

a  and  b  represent the lengths of the legs; so,  a = 8  and  b = 8  (since the triangle is isosceles)

--->   c²  =  8² + b²   --->   c²  =  64 + 64   --->   c²  =  128   --->   c  =  √128

response^ Thank you

This question is rather confused ...

First, find the amount of increase by subtracting the original value (120) from the final value (250).

Then, divide that answer by the original value.

Turn this into a percent by multiplying by 100 and attaching a percent symbol.

250 - 120  =  130

130 ÷ 120  =  1.08333...

1.08333... x 100  =  108.33 %  (approximately)

For part e.  The regression line gives y = 26 - 0.7*6 = 21.8% body fat.  

The difference between this and the actual body fat for this student is 21.8% - 15% = 6.8%

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Use a calculator to find 1.045^10 and then multiply that answer by 82000.

(Your answer should be slightly over 127,400.)

1 mole of the molecule contains Avogadro's number (6.022x10²³) molecules. For each of these molecules there are 11 oxygen atoms, so in total there are: 11x3.65x6.022x10²³ oxygen atoms.

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First find the total number involved by adding up all the frequencies:  T = 100+43+36+17+24+9+11

a. Divide each frequency by the total T

Nbr of impairments   0           1       2       3       4     5      6

relative frequencies   100/T  43/T  36/T  17/T  24/T  9/T  11/T

b.  The proportion who had at most 2 impairments = proportion who had exactly 0 impairments + proportion who had exactly 1 impairment + proportion who had exactly 2 impairments = 100/T + 43/T + 36/T

c. Proportion who had more than 2 impairments = 1 - proportion who had at most 2 impairments

or 1 - (100/T + 43/T + 36/T)

You should now be able to fill in the actual numbers.

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Compound Interest Formula:     A  =  P(1 + r/n)^(n·t)

A = final amount = $6000.00         P = beginning amont = $2000.00         t = time (in years)

r = rate (as a decimal) = 0.03        n = number of compounding periods per year = 1

--->   6000  =  2000(1 + 0.03/1)^(n·1)

--->   6000  =  2000(1.03)ⁿ

--->   3  =  (1.03)ⁿ 

--->   log(3)  =  log(1.03)ⁿ             Now, since exponents come out as multipliers:

--->  log(3)  =  n·log(1.03)             Divide both sides by log(1.03):

--->  log(3) / log(1.03)  =  n          Use a calculator to make this division, and round your answer.

Kilograms measure mass; liters measure volume.

So, if you want to know how many kilograms are in a liter, you must specify what you are talking about: iron, water, air, etc.

Kg is a measure of weight and liter is a measure of volume.

The answer is an infinite answer, just as pi is infinite.. 3.14159265... (... being infinity)

-2 squared is basically -2 * -2. And we know that two negatives always make a positive, so -2 * -2 is +4

just x it because it is simple

19 looooooooooooooooooooooooooooooool

 the answer 10+9=19

no one knows but do wat u like and that wull make u happy