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7+x+7x

well since multiplication is repeated addition

7x + x would be 8x

so 8x+7.

$$S=\frac{U\times V}{U+V}$$

Multiply both sides by U + V:

$$S\times (U+V)=U\times V$$

Expand the left-hand side:

$$S\times U + S\times V = U\times V$$

Subtract U*V and S*V from both sides:

$$S\times U-U\times V=-S\times V$$

Factor out U on the left-hand side:

$$U\times (S-V)=-S\times V$$

Divide both sides by S - V:

$$U=-\frac{S\times V}{S-V}$$

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anything to the first power is just itself, aka x¹ = x.

so 10¹ just equals 10

instead of putting sin(x) put asin(x)

If N(t) is the population after t years, we write:

N(t) = 895*k^t where k is found from the fact that when t = 1 year N(1) = 1.07*895, so:

1.07*895 = 895*k¹  so k = 1.07

Hence N(t) = 895*1.07^t

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Use asin (press the 2nd button first)

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$$e^{4x}-13e^{2x}+12=0$$

This can be written as:

$$(e^{2x})^2-13e^{2x}+12=0$$

which can be written in turn as:

$$(e^{2x}-1)(e^{2x}-12)=0$$

So we have:

1.

 $$\\e^{2x}=1\\so\\x=0$$

2.

$$\\e^{2x}=12\\\\2x=\ln{12}\\\\x=\frac{\ln{12}}{2}$$

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i have no idea

in mathematics the digit sum is a given integer is the sum of all it's digits.

to solve for m, subtract 4m from the right side and the left side.  Then add 8 to the left and right side.  You will have .5m=13.5

m=27

1/6 of 360 is 60 because you divide by the denominator and times by the numerator

The volume of a pyramid can be found by using the formula:  V  =  (1/3)·(Area of the Base)·(Height)

Since the base is square, 280 meters on each side, its area is  280 x 280  or  2802.

So:  V  =  (1/3)·(2802)·(130.6)  =  your answer

look melody if i afended you just let me know i may not know much about math but, i was thanking cowgirlAMS and she didnt mind

Just divide 30 and 875 put 30 first

ok..

so first u write out the equasion x+7=5

so then u move 7 to the other side of the equasion x=5-7

work out what 5-7 is

x = -2

It would equal a positive number.

2 - (-4) = 6

Good so far

1/4 divide the denominator by 2 and the numerator by 2

IT is actually 21 because

          9 + 10 = 21

The factors of 9 are three and the factors of 10 are 2 and 5. You time 3 and 2 together (6) and 3 and five together (15) 6 + 15 =21

SO YEAH!!!!!!  

Anonymous