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iVinArrow [24]
3 years ago
6

421.2 - 305.8 Using mental math

Mathematics
1 answer:
Nitella [24]3 years ago
8 0

Answer:

114.4

Step-by-step explanation:

421.2

-305.2

114.4

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Answer:

You have to divide the total sales by 8 percent. 32,000/ 0.8 =40,000

So your answer is 40,000.

Step-by-step explanation:

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Electrical resistance ina wire is directly proportional to its length and inversely proportional to the square of its diameter.
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Initial Conditions:

length=L= 10 cm = (10*10⁻²)m
Diameter=D= 2 cm= (2*10⁻²)m
Radius= r= 0.01m
Area=A= π*r²/2 =1.57*10⁻⁴ m²

Resistance=R= 600 ohm
 
So, from initial conditions we find resistivity(р)
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<span>As, material remains same so resistivity(p) doesn't change

 </span>Lenght= L1= 15 fm= 15*10⁻¹⁵ m
Diameter= D1 = 5 cm= 5*10⁻² m
Radius= r= 0.025 m
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3 years ago
Compare. Choose the correct symbol.<br><br> A) &lt;<br><br> B) &gt;<br><br> C) =
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Answer:

[B] >

Step-by-step explanation:

One way to find the correct symbol is

Cross Multiply:

\frac{1}{3}   ⊂⊃ \frac{1}{4}

Don't know how to cross multiply?

Answer to cross multiply -  Multiplying the numerator of the left-hand fraction by the denominator of the right-hand fraction. That the first step. After that, multiply the numerator of the right-hand fraction by the denominator of the left-hand fraction. Which is shown below in picture.

Now let's start:

\frac{1}{3}?\frac{1}{4}

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Thus we have:

 ^4\frac{1}{3}?\frac{1}{4}^3

4 is bigger than 3

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