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3x,5x-4,5x are first 3 consecutive terms of an arithmetic sequence . What is its 10th term?

d=5x-(5x-4) = 4

so

5x-4-3x=4

2x=8

x=4

so

a=3*4=12     d=4

Tn=a+(n-1)d

T10 = 12+9*4 = 48

$$\sum \limits_{k=0}^N {N \choose k} \cdot (P^k)(1-P)^k
=[1+p\cdot(1-p)]^N$$

A posh function is like a a ball.  A functions where really posh people hang out.   

I suspect you really want to know what a cosh fuction is:         

$$\cosh(x) = \frac{e^x+e^{-x}}{2}$$             

If you have you calculator set to radians but you want degrees then anons answer is also correct. :)

acos(12/13)

$$\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{cos}}^{\!\!\mathtt{-1}}{\left({\frac{{\mathtt{12}}}{{\mathtt{13}}}}\right)} = {\mathtt{22.619\: \!864\: \!948\: \!04^{\circ}}}$$

I love maths too  !!   

arccos(12/13)*180/π, use the calculator, and π means pi, although it looks so weird.

No it is not just you.  The forum was down for over a week :)

f(5)= -2

g(x)= -2*f(x)

how much is g(x)

I think that you mean what is g(5).....

g(5)=-2*-2=4

3x+5x=2*(5x-4)

8x=10x-8

x=4

3x=12

d=(5x-3x)/2=4

Thus the 10th term of the sequence is 3x+(10-1)*d=48

Thank you :)

If it is a square then just take the squareroot of the area to find the side length. It is the squareroot of 25 so the sides are 5 cm. 

Hi markjarv

1150*0.035*9/12

1150*0.035=40.25

40.25*9/12

=30.1875

5*9=45

45+8=...

u do the math

To get the answer read this on bottom

4 is in the ones place

1 is in the million place

3 in the thousand place

8 in the ten and ten thousand place

And 9 in the hundred thousand and hundred place

Answer- 1,983,984

Hi Mellie

All pronumerals that I use in this question have integer values.

A1127B = 99C

100000A+11270+B=99C

99×1010A+10A +99×113+83+B=99C

99(1010A+113)+10A+83+B=99C

10A+B+83=99(C-1010A-113)

10A+B+83=99D

10A+B=99D-83

Now A and B are both single digit numbers so D can only equal 1.

10A+B=16

A=1 and B=6

The price is    111276 cents or

$1112.76

The books were $11.24 each.

Complementary angles are angles that sum to 90°, so:

(x - 5) + (4x)  =  90°

            5x - 5  =  90°

                  5x  =  95°

                    x  =  19°

x - 5  =  19 - 5  =  14°

4x  =  4(19)  =  76°

Without the uppercase T, you may need to give all the answers, which is done by adding (and subtracting) all whole number multiples of 180° (or π/2).

For instance:  T  =  21.80° ± k·180° (where k is any whole number)

I guess I meant tan, didn't know the caps made a difference!