Please answer these questions please

Mathematics

1 answer:

IRINA_888 [86]2 years ago

5 0

Answer:

35t 125kg

5120x12=61440 kg

10200+9=10209 kg

Step-by-step explanation:

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3 years ago

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If <img src="https://tex.z-dn.net/?f=%20a%5E%7B2%7D%2Bbx%5E%7B2%7D%20%3D13%20" id="TexFormula1" title=" a^{2}+bx^{2} =13 " alt="

Mkey [24]

$a^2-b^2=13;\ ab=6$

$a)\\(a+b)^2=a^2+2ab+b^2=(a^2+b^2)+2(ab)=13+2\cdot6=25\\\\b)\\(a-b)^2=a^2-2ab+b^2=(a^2+b^2)-2(ab)=13-2\cdot6=1$

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3 years ago

Why is a coordinate plane called a coordinate plane?

Mekhanik [1.2K]

Answer:

The invention of the Cartesian Coordinate System is credited to René Descartes. He revolutionised mathematics by providing the first systematic link between Euclidean geometry and algebra. Thus, the Coordinate Plane is named after him. ("Cartesian" from his last name, Descartes.)

Step-by-step explanation:

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3 years ago

8 times what number equals 24?

Shtirlitz [24]

<h3>Let the number be x</h3>

$8 \times x = 24 \\ x = \frac{24}{8} \\ x = 3$