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Naya [18.7K]
4 years ago
6

What is 3/5 of 7 kg ?

Mathematics
2 answers:
MAVERICK [17]4 years ago
3 0
What is 3/5 of 7 kg ?

of = multiplication

3/5 × 7 = ?
0.6 × 7 = 
4.2

3/5 of 7 kg is 4.2 kg.
Nuetrik [128]4 years ago
3 0
We do the following:
3/5 x 7 = 21/5 kg(in fractions), which is equal to 4.2 kg(in decimals)
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galina1969 [7]

How to get answer for number 1: | 4+2i |

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How to get answer for number 2: | 5-i |

\left|a+bi\right|\:=\sqrt{\left(a+bi\right)\left(a-bi\right)}=\sqrt{a^2+b^2}\\\mathrm{With\:}a=5,\:b=-1\\=\sqrt{5^2+\left(-1\right)^2}\\=\sqrt{26}

Number 3 how to get answer: | -3i |

\left|a+bi\right|\:=\sqrt{\left(a+bi\right)\left(a-bi\right)}=\sqrt{a^2+b^2}\\\mathrm{With\:}a=0,\:b=-3\\=\sqrt{0^2+\left(-3\right)^2}\\Refine\\=\sqrt{9}\\\sqrt{9}\\\mathrm{Factor\:the\:number:\:}\:9=3^2\\=\sqrt{3^2}\\\mathrm{Apply\:radical\:rule}:\quad \sqrt[n]{a^n}=a\\\sqrt{3^2}=3\\= 3

4 0
3 years ago
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What is 10 squared plus b squared equals 22 squared
klio [65]
I'm pretty sure you are asking for the value of b. Let's actually write it and then solve it:
10^2 + b^2 = 22^2

Solving for b yields:
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So, b = 19.59. If you want the answer in simplified radical form, we can also do that:
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Answer: 8200 miles

Step-by-step explanation:

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x = additional trips = 4

We then put the value of x into the equation

= 3400 + 1200x

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