3 years ago

What is 8x-3y=-16,5x+2y=-41

1 answer:

5 0

I'm assuminng you want to find x and y

eliminate

hmm
eliminate y's
3 times 2=6

multiply first equation by 2 and 2nd by 3 and add

16x-6y=-32
<u>15x+6y=-123 +</u>
31x+0y=155

31x=155
divide both sides by 31
x=5
sub back

5x+2y=-41
5(5)+2y=-41
25+2y=-41
minus 25 both sides
2y=-66
divide by 2
y=-33

(x,y)
(5,-33)

You might be interested in

A computer has 128 gigabytes of memory. One gigabyte is 1×10^9 9 bytes. By comparison, a floppy storage disk from the 1970's, ho

Blababa [14]

Answer:

Step-by-step explanation:

6 0

3 years ago

What is 1/3 of eleven sixteenth

TiliK225 [7]

It’s 5 1/3 because 16 divided by 3 is 5 1/3

8 0

4 years ago

Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the curves about the given

Fed [463]

See attachment for one such shell. The volume is given by the sum of infinitely many thin shells like this, each with radius $x$ and height determined by the vertical distance between the upper blue curve and the lower orange curve for any given $x$ , i.e. $8e^x-8e^{-x}$ .

The volume is then

$2\pi\displaystyle\int_0^1x\left(8e^x-8e^{-x}\right)\,\mathrm dx=16\pi\int xe^x(e^{2x}-1)\,\mathrm dx=\dfrac{32\pi}9(e^3-4)\approx179.677$