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Well if the price was REDUCED 10% , then 90% is what is left =130

90% (x) = 130

.9x=130

x= 130/.9 = L 144.44

59+ (-79) =-20

If the cos of an angle is positive, the angle will be in either the first quadrant or the fourth quadrant.

If the csc of an angle is negative (since csc = 1/sin), the sin will also be negative and the sin is negative in either the third quadrant or the fourth quadrant.

Since cos(t) = 4/7 and csc(t) < 0, tthe angle t must be in the fourth quadrant.

Since cos = x/r and cos(t) = 4/7,  x = 4 and r = 7.

Using the Pythagorean Theorem:  x² + y²  =  r²    --->   4² + y²  =  7²​   --->   16 + y²  =  49   --->   y²  =  33

So, either  y = sqrt(33)  or  y  =  - sqrt(33).

Since the angle is in the fourth quadrant:  y  =  -sqrt(33).

sin = y/r   --->   sin(t)  =  -sqrt(33) / 7

tan = y/x   --->   tan(t)  =  -sqrt(33) / 4

To find what percentage of 817 that is 657:

first divide 657 by 817:  657/817  =  0.804  (approximately)

and then, to change into a percentage, multiply that answer by 100:  0.804 x 100  =  80.4%

6^3/2  can be evaluated two ways (both ways give the same answer):

Since the fraction is in the exponent, the numerator 3 means to cube the number, the denominator 2 means to find the square root.

If you cube first and then find the square root   --->   6³  =  216  and the square root of 216  =  14.7  (approximately).

If you find the square root first   --->   sqrt(6) = 2.4494...  and this number cubed is  14.7  (approximately).

So, if you have a fractional exponent, you can raise to a power first (the numerator) and then find the root (the denominator) of that answer, or you can find the root first and then raise that answer to the power.

You have to know at least two of the three sides of the triangle.

1/4+1/5=9/20=0,45

As below:

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Take logs to base 4 of both sides:

\(16^{x/2}=64\\.\\\frac{x}{2}log_416=log_464\\.\\ \frac{x}{2}\times 2=3\\.\\x=3\)

Note that log₄16 = 2 because 4² = 16  and log₄64 = 3 because 4³ = 64

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I've shown this graph with your other question at http://web2.0calc.com/questions/algebra_26390#r1 

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Here are the graphs:

200%-51%-45%=104%

104/200

52/100

13/25

http://lmgtfy.com/?q=28+x+16#

\(\frac{4019.2}{\frac{1}{3}}\)

\(\frac{\frac{4019.2}{1}}{\frac{1}{3}}\)

\(\frac{\frac{40192}{10}}{\frac{1}{3}}\)

\(\frac{40192}{10}\times\frac{3}{1}\)

\(\frac{40192}{10}\times3\)

\(\frac{20096}{5}\times3\)

\(\frac{60288}{5}\)

\(12057.6\)

\(\frac{x}{22}+\frac{x}{55}=2.5\)

\(\frac{55x}{1210}+\frac{22x}{1210}=2.5\)

\(\frac{77x}{1210}=2.5\)

\(77x=3025\)

\(x=\frac{3025}{77}\)

\(x=\frac{275}{7}\)

\(x= 39.285714285714285714...\)

a man begins a savings with $7000 each year added to what had the previous year more 7% of this amount would model of ends that saving for three years? and how that is determined?

(a) (7000 + (7000) 7/100 + (7000 + (7000) 7/100) 7/100)

(b) (7000 + (7000) 100/7 + (7000 + (7000) 100/7) 100/7)

(c) (7000 + (7000) 7/100) 7/100

(d) (7000 + (7000) 100/7) 100/7 [BING TRANSLATOR]

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FV=P{[1 + R]^N - 1/ R}=FV OF $1 PER PERIOD . This is the right formula to use for your problem.

FV=7,000 {[1 + 7%]^3 - 1 / 7%}

FV=7,000{1.07^3 - 1 / .07}

FV=7,000{1.225043 - 1 / .07}

FV=7,000{0.225043 / .07}

FV=7,000 x 3.2149

FV=22,504.30. FV=Future Value. P.S. The 7,000 is assumed to be deposited at the end of the year.

What is tan^-1 (sqrt3/3)

=30 degrees.

what is 25% of 68 in percentages

25/100 x 68=17

1,600 x 20 =32,000 km- total distance run by the 20 runners.

Laura added 2/3 of 128 grams=85 1/3 grams of chocolate powder.

But she is supposed to add only 64 grams, therefore:

(85 1/3) / 64 = 1 1/3 - 1 =1/3 excess chocolate poweder that Laura added to cake mix,