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3 years ago

What is the least common denominator of 1/8 5/12 + 718A) 216B) 108C) 72D) 48

Mathematics

2 answers:

zzz [600]3 years ago

6 0

The answer is 48 i think

MAVERICK [17]3 years ago

4 0

48 ur welcome yea so yea

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Solve the system using elimination.

yan [13]

Answer:

y=-3

Step-by-step explanation:

5x+7y=-31

(-) 5x-9y+17

-----------------

16y=-48

------------

16 16

y=-3

8 0

3 years ago

Find dy/dx by implicit differentiation. y cos x = 5x2 + 3y2

lbvjy [14]

Step 1:
Start by putting $\frac{d}{dx}$ in front of each term

$\frac{d}{dx}[y cos x]= \frac{d}{dx}[5x^2]+ \frac{d}{dx}[ 3y^2]$
-----------------------------------------------------------------------------------------------------------------
Step 2:

Deal with the terms in 'x' and the constant terms
$\frac{d}{dx}[ycosx]= 10x+ \frac{d}{dx} [3y^2]$
----------------------------------------------------------------------------------------------------------------
Step 3:

Use the chain rule for the terms in 'y'
$\frac{d}{dx}[ycosx]=10x+6y \frac{dy}{dx}$
--------------------------------------------------------------------------------------------------------------
Step 4:

Use the product rule on the term in 'x' and 'y'
$(y) \frac{d}{dx} cos x+(cos x) \frac{d}{dx}y =10x+6y \frac{dy}{dx}
$
$y(-siny)+(cosx) \frac{dy}{dx} =10x+6y \frac{dy}{dx}$
--------------------------------------------------------------------------------------------------------------

Step 5:

Rearrange to make $\frac{dy}{dx}$ the subject
$-y sin(y)+cos(x) \frac{dy}{dx} =10x+6y \frac{dy}{dx}$
$cos(x) \frac{dy}{dx}-6y \frac{dy}{dx}=10x+y sin(y)$
$[cos(x) - 6y] \frac{dy}{dx}=10x + y sin(y)$
$\frac{dy}{dx}= \frac{10x+ysin(y)}{cos(x)-6y}$ ⇒ Final Answer

5 0

4 years ago

I need help please and thank you.

Zinaida [17]

Answer:

Step-by-step explanation:

The formula gives you a relation between S and n. For every n, you can perform the calculation and obtain an S.

So, for n=0 we get 0/2 (0+1) which equals 0. So (0,0) is an (n,S) pair.

7 0

3 years ago

Help ASAP!! This one's is difficult for me to understand!! Help me please!

IceJOKER [234]

Answer:

Ok so im in 7thgrade so ima try to help answer is x= 8x9

4 0

3 years ago

Rewrite each series using sigma notation 405+406+407+408+409

wlad13 [49]

$405+406+407+408+409=\boxed{\sum\limits_{n=405}^{409}n}$

7 0

3 years ago

What is the least common denominator of 1/8 5/12 + 718A) 216B) 108C) 72D) 48​

What is the least common denominator of 1/8 5/12 + 718A) 216B) 108C) 72D) 48