3 years ago

Anyone know what 4x + 2y - 6z -x -3y + 2z ?

Mathematics

2 answers:

____ [38]3 years ago

6 0

4x+2y-6z-x-3y+2z= 3x-y-4z

For more help use math/way/./com

kenny6666 [7]3 years ago

6 0

I think this may be what answer you are searching for: =3x-y-4z

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3 years ago

S=n/2(2a+(n-1)d). If d=5, n=13, S=585 find the value of a.

anygoal [31]

Answer:

Step-by-step explanation:

Sum of 'n' terms formula is given by:-

s=n/2(2a+(n-1)d)

s=13/2[2xa+(13-1)5]

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s=13/2(2a+60)

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elena-14-01-66 [18.8K]

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$x=30$

Step-by-step explanation:

For each right-angled triangle:

$\cos\theta=\frac{cathetus \ adjacent \ \theta}{hypotenuse}$

Because $\cos \theta=0.4, \ \ cathetus\ adjacent \ \theta \ = \ 12, \ \ \ hypotenuse=x$

we have an equation

$0.4=\frac{12}x$

multiplying both sides by x, we get $0.4x=12$

dividing both sides by 0.4 and $x=\frac{12}{0.4}$

using calculator, we divide 12 by 0.4

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3 years ago

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3 years ago

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