All Questions ⁺⁰238017 Questions

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622

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2 Lines in a 3D field

I want to prove that two lines that start from the same spot (O) and have the endpoints A=(-4,1,5) and B=(5,-4,4) have a 90 degree angle between each other. How do i go on about his?

If OA*OB= 0 the have a 90 degree angle read more ..

Guest Sep 17, 2015

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424

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I Need Help .

what is the soultion to 9-3

Guest Sep 17, 2015

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422

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Pls help

To be written as a fraction infinite decimal numbers: 3 15/8 1/4 0

Guest Sep 17, 2015

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379

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what is math

Guest Sep 17, 2015

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565

0

1.02*100%

Guest Sep 17, 2015

0

673

1

X3=360

how do i find X3=360

Guest Sep 17, 2015

0

601

0

Why this Sayt is not online?

Why this Sayt is not online?

Guest Sep 17, 2015

0

634

0

+96

Solve for r

A= $2400, P=$1800, t=6

SAC357 Sep 17, 2015

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559

1

if i eat 123456789 chocolates a day how many chocolates will i eat in 20 years?

if i eat 123456789 chocolates a day how many chocolates will i eat in 20 years?

Guest Sep 17, 2015

0

501

1

My math

10-|2n+v| n=2 v=-8

Guest Sep 17, 2015

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497

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40x50

Guest Sep 17, 2015

0

860

1

math is too hard

there are values of t so that sin t=.35 and cos t=.6 true or false?

Guest Sep 17, 2015

+4

1504

1

11.2 independed practice

members of the wide walters water club pay $105 per summer seosson ,plus $9.50 each time tghey rent the boat. nonmembers must pay $14.75 each time they rent the boat. how many times would a member and a non-member have to rent a boat in order to pay the read more ..

Guest Sep 17, 2015

0

452

1

help

(5/8y − 3/5y) ÷ (3/4z − 2/5z)

Guest Sep 17, 2015

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571

1

if x=12 what is x+5

if x=12 what is x+5

Guest Sep 17, 2015

0

584

1

Working together, two workers can finish a concrete floor in 40 minutes. Working alone, the worker with the smaller machine is 25 minutes longer than the

Working together, two workers can finish a concrete floor in 40 minutes. Working alone, the worker with the smaller machine is 25 minutes longer than the worker with the large machine. Approximate to the nearest minute the time it will take the worker with read more ..

Guest Sep 17, 2015

0

491

1

What is -1 times -4 times -3 times 3 ?

What is -1 times -4 times -3 times 3 ?

Guest Sep 17, 2015

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439

1

math

one and a half times two

Guest Sep 17, 2015

0

452

1

need help

Guest Sep 17, 2015

0

453

1

algebra 2

Guest Sep 17, 2015

0

464

2

Solve equations

(-22-2a)^(3/2)= 64

Guest Sep 17, 2015

0

436

0

Maths!

100000000000000+90009090909090908748374874283974238947238947238947234823789374823748923748239478239

Guest Sep 17, 2015

0

477

1

what is 1 x 1

Guest Sep 17, 2015

+3

548

1

a great white shark swims 5.0 mile/hr. how many ft/min is that?

a great white shark swims 5.0 mile/hr. how many ft/min is that?

Guest Sep 17, 2015

+5

529

1

Algebra

Marcus earn $22 less than Steven.If Marcus earned $p,how much did they earn altogether?

Guest Sep 17, 2015

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