4 years ago

What is 1 and 3/10 plus 3 and 1/3

Mathematics

1 answer:

Mamont248 [21]4 years ago

3 0

Answer:

4 19/30

Step-by-step explanation:

1 3/10 + 3 1/3 = 139/30 or 4.63333...

Simplyfiy 139/30 to 4 19/30

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3 years ago

Explain how to do this

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Answer:

90°

Step-by-step explanation:

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3 years ago

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Step-by-step explanation:

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4 years ago

Find the root of the quadratic equation y=3x^2-30x+45

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$y=3x^2-30x+45\\\\a=3;\ b=-30;\ c=45\\\Delta=b^2-4ac\\\\\Delta=(-30)^2-4\cdot3\cdot45=900-540=360 \ \textgreater \ 0\\\\therefore\\x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{360}=\sqrt{36\cdot10}=\sqrt{36}\cdot\sqrt{10}=6\sqrt{10}\\\\x_1=\dfrac{30-6\sqrt{10}}{2\cdot3}=\dfrac{30-6\sqrt{10}}{6}=\boxed{5-\sqrt{10}}\\\\x_2=\dfrac{30+6\sqrt{10}}{2\cdot3}=\dfrac{30+6\sqrt{10}}{6}=\boxed{5+\sqrt{10}}$

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4 years ago

Rewrite the fraction in the sentence below as a percentage.

Furkat [3]

Answer:

55%

Step-by-step explanation:

Total number of targets = 20

Number of targets hit = 11

100 / 20 = 5

5 * 11 = 55

This means that 55% of the targets were hit.

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