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3 years ago

What is 3.405 written in expanded form

Mathematics

2 answers:

Eva8 [605]3 years ago

5 0

Not sure which expanded form you need it in. There's also expanded exponential form let me know if you need more assistance

Arlecino [84]3 years ago

3 0

3 + .4+.005 is the expanded form

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Please help with algebra 2 logarithms. brainliest if you explain and worth 25 points

Ronch [10]

Answer: 3log5(2) - 1 or ~0,29203

Step-by-step explanation:

2log5(4) - log5(10)

log5(4^2) - log5(10)

log5(4^2/10)

log5(16/10)

log5(8/5)

Log5(8) - log5(5)

log5(2^3) - 1

3log5(2) - 1

5 0

2 years ago

Sarah has some dimes and quarters. If she has 26 coins worth a total of $3.65, how many of each type of coin does she have ?

xeze [42]

19 dimes and 7 quarters

19 times 0.10 equalls 1.90
7 times 0.25 equalls 1.75
add 1.90 and 1.75
the answer is 3.65

5 0

4 years ago

What is the modulus and argument after (StartRoot 3 EndRoot) (cosine (StartFraction pi Over 18 EndFraction) + I sine (StartFract

fgiga [73]

Answer:

$|z| = 27$ -- Modulus

$\theta = \frac{\pi}{3}$ --- Argument

Step-by-step explanation:

Given

$((\sqrt 3)(cos\frac{\pi}{18} + i\ sin\frac{\pi}{18}))^6$

Required

Determine the modulus and the argument

We have that:

$z = ((\sqrt 3)(cos\frac{\pi}{18} + i\ sin\frac{\pi}{18}))^6$

Expand:

$z = (\sqrt 3)^6(cos\frac{\pi}{18} + i\ sin\frac{\pi}{18})^6$

$z = 27(cos\frac{\pi}{18} + i\ sin\frac{\pi}{18})^6$

A complex equation can be expressed as:

$z = |z| e^{i\theta}$

Where

$|z| = modulus$

$\theta = argument$

Where

$e^{i\theta} = (cos\frac{\pi}{18} + i\ sin\frac{\pi}{18})$

So:

$z = 27(cos\frac{\pi}{18} + i\ sin\frac{\pi}{18})^6$ becomes

$z = 27(e^{i\frac{\pi}{18}})^6$

By comparison:

$e^{i\theta} = (e^{i\frac{\pi}{18}})^6$

This gives:

${i\theta} = i\frac{\pi}{18}}*6$

${i\theta} = i\frac{6\pi}{18}}$

${i\theta} = i\frac{\pi}{3}}$

Divide through by i

$\theta = \frac{\pi}{3}$

Hence, the modulus, z is:

$|z| = 27$

And the argument $\theta$ is

$\theta = \frac{\pi}{3}$

4 0

3 years ago

Ill give 20 points if you help me out!!

Rasek [7]

Answer:

4 + y = 36

y = 36 - 4

y = 32

3 0

3 years ago

Read 2 more answers

What is the regular area of a trapezoid?

noname [10]

Answer:

Regular Area of trapezoid u can choose anyone either this one A=(a+b) or this one 2×h 

maybe this might be ur answer

6 0

3 years ago