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marin [14]
2 years ago
11

(9×106)(8×10k)=7.2×1015, find k.

Mathematics
1 answer:
katrin2010 [14]2 years ago
3 0
<h2 />

Step-by-step explanation:

x = £FX/£F= 260+10k/40+k = 7.2

<h3>260 +10k = 288 + 7.2k 2.8 k = 28 k=10 </h3>
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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
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So, from initial conditions we find resistivity(р)
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                                       R*A /L=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
Area= A1= π*r²/2 =9.8125*10⁻⁴ m²
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3 0
3 years ago
V
Fofino [41]

Answer:

They got the same answer

Step-by-step explanation:

A slope is completely linear, and the rate of change is constant, so no matter what points are chosen, the rate of change will be the same.

5 0
2 years ago
Benjamin invests $400 in a savings account that earns 5\%5% interest each year. Which expression does not give the correct balan
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400(1−0.05) ^3

Step-by-step explanation:

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