All Questions ⁺⁰238216 Questions

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698

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Electromagnet Wave Calculation Help

An electromagnet wave has a frequency of 2.5 x 1012 Hz and a speed of 3 x 108 m/s. Use the equation for a wavelength to calculate the wavelength of this wave.
A) 5.34 x 10-6 m
B) 1.20 x 10-4 m
C) 3 x 108 m read more ..

Guest Oct 24, 2015

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945

2

what is .000000025 expressed as a percentage?

what is .000000025 expressed as a percentage? Is it 25 quadrillion of a percent?

Guest Oct 24, 2015

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3292

6

solve log (x-1)-log8 x=1

solve log8 (x-1)-log8 x=1

Alan ●●●●●●

Guest Oct 24, 2015

0

1012

5

Help!!!! Homework!!!! STUCK!!!!

3z + 4=-1
10
what is z???

Melody ●●●●●

Guest Oct 24, 2015

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446

1

standard deviation

how do you find standard deviation

Guest Oct 24, 2015

+5

525

2

Homework Question

35y+4=-1 what is y?

Guest Oct 24, 2015

0

483

1

help!!!!!!!! what is the missing terms in the sequence!

4,9,...,19,.....,.....,34

Guest Oct 24, 2015

0

1

1288

4

trig help

Find sin θ if cot θ = - 2 and cos θ < 0.

Omi67 ●●●●

Guest Oct 24, 2015

0

559

1

Factorization of a large semi-prime

Find the two factors of this large semi-prime:
2777777777777777777777777777777777335333333333333333333333333333333333457

Guest Oct 24, 2015

0

732

3

????

x²÷y²+y÷x=?

Guest Oct 24, 2015

0

1318

1

3^x=29

3^x=29
Exponential equation

Guest Oct 24, 2015

0

640

2

LIFE SUCKS

WHY IS MATHS SO HARD

Guest Oct 24, 2015

0

641

3

percentage

Eric was preparing for his grandpa's birthday party. He bought some food with 20% of his money. He bought some drinks with 30% of the remaining money and had $28 left. How much did Eric have at first?

Melody ●●●

Guest Oct 24, 2015

0

619

2

Dividing

How do you divide a really big number like 2,968?

Guest Oct 24, 2015

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893

4

+96

Find the standard deviation.

Find the standard deviation. Round to one more place than the data.
3, 4, 16, 6, 20, 5, 9, 20, 14

A. 7.3 read more ..

Melody ●●●●

SAC357 Oct 24, 2015

0

630

1

what is this answar

Guest Oct 24, 2015

+28

11

1282

0

+118739

@@ Wrap Lantern Sat 24/10/15

The is called the Lantern Post because it lights the way to the "What is happening" thread
The "What is Happening" thread can be accessed directly. It is at the following address:

http://web2.0calc.com/questions/what-is-happening-wrap-4#r9 read more ..

Melody Oct 24, 2015

+5

510

1

wats 5 add 2

Guest Oct 24, 2015

0

612

1

Please answer

3/40*360 degrees

Guest Oct 24, 2015

0

549

1

Basic maths, but I have a blackout.

(100 / X) * 250 = 88 What is X?

Guest Oct 24, 2015

0

683

2

help

(x.x)-10x=96 x=?

Guest Oct 24, 2015

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