3 years ago

What is the distributive property 39x5

Mathematics

1 answer:

sineoko [7]3 years ago

6 0

Rewrite 39 as (40-1) and then multiply this result by 5:

200-5 = 195 (answer)

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Max estimates the link of his garden to be 25 feet Joey estimate it to be 7 feet if the actual link is 19 feet which is a better

Lera25 [3.4K]

25 is the better estimate because 25-19=6 si yeah it's 25

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4 years ago

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12x3/8 pls help anybody I’m stuck on this problem

diamong [38]

Answer:

4.5

or 4 1/2

Step-by-step explanation:

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3 years ago

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If arc AB = 70°, how many degrees are in ∠ ADB?

tankabanditka [31]

If D is the center of the circle, ∠ADB = 70°, as that is where the arc gets its measure.

If D is on the circle and not on the arc, ∠ADB = 35°, half the measure of the arc's central angle.

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3 years ago

A) y= -3.5x + 57.5<br>B) y= 3.5x + 57.5<br>C) y= -3.5x + 32.5<br>D) y= -3x + 57.5

spin [16.1K]

The answer is y=-3x+57.5

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4 years ago

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Write (1 + i)^10 as a complex number of the form a+ ???????????????? for real numbers aand ????????.

SashulF [63]

Answer:a=0

b=32

Step-by-step explanation:

Given

Complex number $z=\left ( 1+i\right )^{10}$

any complex number is written in the form

$z=re^{i\theta }$

where r=magnitude

so $z=\left [ \sqrt{2}\left ( \frac{1}{\sqrt{2}}+i\frac{1}{\sqrt{2}}\right )\right ]^{10}$

$z=\left ( \sqrt{2}\right )^{10}\left ( \cos 45+i\sin 45\right )^{10}$

$z=2^5\left ( e^{i\frac{\pi }{4}}\right )^{10}$

$z=32\left ( e^{\frac{5\pi }{2}}\right )$

$\frac{5\pi }{2}=2\pi +\frac{\pi }{2}$

$z=32\left ( e^{i\frac{\pi }{2}\right )$

$z=32\left ( \cos \frac{\pi }{2}+i\sin \frac{\pi }{2}\right )$

real part $a=32\times \cos (90)=0$

$b=32\times \sin (90)=32$

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3 years ago