geno3141

Find 15% of $1280.00 and subtract that answer from $1280.00.

15% of $1280.00  =  .15 x 1280  = $192.00 (the discount)

$1280.00 - $192.00  =                          (the smount you will pay)

If she makes $400.00 in one week and if she works 40 hours that week, you can find how much she makes per hour by dividing $400.00 by 40 hours.  How much is 400 ÷ 40?

95^3  =  857375

857375 x ?  =  1985500

To find your answer, divide 1985500 by 857375.

3^1  =  3           3^5 = 243

3^2  =  9           3^6 = 729

3^3  =  27         3^7 = 2187                      etc.

3^4  =  81         3^8 = 6561

If you divide the exponent by 4, and your remainder is 1, the last digit will be a 3.

If you divide the exponent by 4, and your remainder is 2, the last digit will be a 9.

If you divide the exponent by 4, and your remainder is 3, the last digit will be a 7.

If you divide the exponent by 4, and your remainder is 0, the last digit will be a 1.

So, divide 45000 by 4, what is the remainder?

∫cos(x)dx = sin(x) + C

The number of bacteria double every 20 minutes.

In one day, 24 hours, 1440 minutes:  1440 ÷ 20  = 72; the amount will be double 72 times.

The original will be doubled:  2^72  times; a very large number. 

I'm a rank amateur at physics; I'll try; but if others post, trust them!

78 km/hr = 21.7 m/s          45 km/hr = 12.5 m/s

Since the acceleration is constant:  acc = (final velocity - initial velocity) / time

    acc = (12.5 - 21.7)km/s / t sec  =  23.3 km / t sec²

distance = .5at² + (initial velocity)t

345 m = .5( 23.3 / t)t² + (21.7 m/sec)t

345 m = -4.6t  + 21.7t 

345 m = 17.1 t

t =  20.2 sec

a =  ( 12.5 m/s - 21.7 m/s ) / 20.2 s

a = -0.46 m/s²

(489x^7) / (3x^2)  =  (489/3) · (x^7/x^2)  = 163x^5

5.9 x 2²  =  5.9 x 4  =  23.6

A tangent to a circle is a line in the plane of the circle that intersects the circle in one point.

It will be perpendicular to the radius of the circle at the point where the radius and tangent intersect.

Other curves beside circles,  also have tangents.