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3 years ago

An electrician paid $153.06 total for 1000 feet of wire how much does he pay per foot of wire

1 answer:

6 0

For every zero you move one decimal place to the left. there are 3 zeroes in 1000.

153.06

3 decimal places to the left

0.15306

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The roller on a computer printer makes 2200 revolutions per minute. what is its angular velocity?

-Dominant- [34]

(2200 rev/min) x (360 deg/rev) x ( min/60 sec) = 13,200 degrees per second

(2200 rev/min) x (2 pi radians/rev) x (min / 60 sec) = 73 and 1/3 pi radians/sec

8 0

3 years ago

The area of a circle is 2464cm2.calculate it's diameter to 2 significant figures

tigry1 [53]

Answer:

Step-by-step explanation:

Answer:

The diameter of the circle is 56 cm.

Step-by-step explanation:

Given : The area of the circle is 2464 cm square.

To find : The diameter of the circle?

Solution :

The area of the circle is defined as

Where, A=2464 cm² is the area,

r is the radius

Substituting the values,

Radius of the circle is 28 cm.

The diameter of the circle is

Therefore, The diameter of the circle is 56 cm.

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3 years ago

A tailor cuts 3 7/8 yards from a roll of fabric to make one jacket. Which expression gives the number of jackets he can make fro

slava [35]

The expression can be represented as 16 3/4 divided by 3 7/8

6 0

3 years ago

Divide. a.1 − 2i/2i b. 5 − 2i/5 + 2i c.√3 − 2i/−2 − √3i

Umnica [9.8K]

Answer:

(a) \frac{-1i}{2}-1[/tex]

(b) $\frac{20i+21}{29}$

Step-by-step explanation:

We have to perform division

(a) $\frac{1-2i}{2i}$

So after division

$\frac{1-2i}{2i}=\frac{1}{2i}-\frac{2i}{2i}=\frac{-1i}{2}-1$

(b) We have given expression $\frac{5-2i}{5+2i}$

After rationalizing $\frac{5-2i}{5+2i}\times \frac{5-2i}{5-2i}=\frac{(5-2i)^2}{25+4}=\frac{25+4i^2+20i}{29}=\frac{20i+21}{29}$

After rationalizing

$\frac{\sqrt{3}-2i}{-2-\sqrt{3i}}\times \frac{-2+\sqrt{3i}}{-2+\sqrt{3i}}=\frac{-2\sqrt{3}+7i+2\sqrt{3}}{7}=\frac{7i}{7}=i$

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3 years ago

Simplify the fractions below

garri49 [273]

3/4 + 2/3 = 17/12

7/8 - 2/3 = 5/24

3/5 x 1/3 = 1/5

4/7 x 2/3 = 8/21

6 0

3 years ago

Read 2 more answers