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4 years ago

Simplify the expression 7y + 4x + 4 - 2x + 8

Mathematics

1 answer:

Leno4ka [110]4 years ago

8 0

2x+7y+12 = 7y+4x+4-2x+8

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You invest $75.00 the first month and $1,000.00 the second month at 3.75% APR. How much interest do you accrue at the end of the

Naddika [18.5K]

Answer

At end of the second month you earned $3.36 as interest.

Step by step explanation

First month investment = $75

Rate of interest = 3.75% APR = 3.75/100 = 0.0375

Monthly interest = 0.0375/12 = 0.003125

At end of the first month interest amount = 0.003125 *75 = 0.234375

= $0.23

Amount after 1st month = 75 + 0.23 = $75.23

Second month invested $1000/

So the principle amount at beginning of the second month = $1000 + $75.23

P = $1075.23

Second month interest = 1075.23*0.003125 = $3.36

Therefore, at end of the second month you earned $3.36 as interest.

Thank you. :)

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3 years ago

Sin 2x + tan 2x = 4tan/ 1- tan^4 prove that

nalin [4]

$\dfrac{4\tan x}{1-\tan^4x}=\dfrac{4\tan x}{(1-\tan^2x)(1+\tan^2x)}$
$=\dfrac{4\tan x}{(1-(\sec^2x-1)\sec^2x}$
$=\dfrac{4\tan x\cos^2x}{2-\sec^2x}$
$=\dfrac{4\sin x\cos x}{2-\sec^2x}$
$=\dfrac{4\sin x\cos^3x}{2\cos^2x-1}$
$=\dfrac{2\sin2x\cos^2x}{\cos2x}$
$=2\tan2x\cos^2x$
$=2\tan2x\left(\dfrac{1+\cos2x}2\right)$
$=\tan2x(1+\cos2x)$
$=\tan2x+\sin2x$

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3 years ago

Dara has to solve 35 math problems for homework. She has completed 14 of them.what fraction of the problems does she have left t

RSB [31]

Answer: 3/5

Step-by-step explanation: thats your answer.

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3 years ago

Consider the function represented by this graph.

seropon [69]

Remember that

For a pair (x,y)

x is domain and y is range

So here

The end points

(0,9)
(8,1)

Hence domain

0≤x≤8

Option C

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2 years ago

Someone smart please help me!!!

Dominik [7]

He won 16 round.
He lost 4 rounds.

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3 years ago