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4 years ago

What’s the answer to number 9 a b c or d?

Mathematics

1 answer:

olga_2 [115]4 years ago

4 0

Answer:

Step-by-step explanation:

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Help me find the slope! (brainliest) <br><br> Jorge lost 18 pounds in 3 months.

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3 years ago

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A²,b²,c² are consecutive perfect squares.How many natura numbers are lying between a² and c², if a>0

pogonyaev

Answer:

The quantity of natural numbers between $a^{2}$ and $c^{2}$ is $2\cdot (a + b) + 1$ .

Step-by-step explanation:

If $a^{2}$ , $b^{2}$ and $c^{2}$ are consecutive perfect squares, then both $a$ , $b$ and $c$ are natural numbers and we have the following quantities of natural numbers:

Between $b^{2}$ and $c^{2}$ :

$c^{2} = (b+1)^{2}$

$c^{2} = b^{2}+2\cdot b + 1$

$c^{2}-b^{2} = 2\cdot b + 1$

And the quantity of natural numbers between $b^{2}$ and $c^{2}$ is:

$c^{2}-b^{2}-1 = 2\cdot b$

Between $a^{2}$ and $b^{2}$ :

$b^{2} = (a + 1)^{2}$

$b^{2} = a^{2} +2\cdot a + 1$

$b^{2}-a^{2} = 2\cdot a + 1$

And the quantity of natural numbers between $a^{2}$ and $b^{2}$ is:

$b^{2}-a^{2}-1 = 2\cdot a$

And the quantity of natural numbers between $a^{2}$ and $c^{2}$ is:

$Diff = 2\cdot a + 2\cdot b + 1$

Please observe that the component +1 represents the natural number $b^{2}$

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3 years ago

The depths of three different submarines are listed below. Which of the following statements are true? Choose all that apply.

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The correct answer choices are B and C.

Here is the way these numbers would fall on a vertical number line justifying why these 2 answers are correct.

-1500 A
-1600
-1700
-1800
-1900 B
-2000
-2100
-2200
-2300 C

You can see where each of these submarines is located. 0 is sea level.

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3 years ago

Taylor kept track of the number of hours that he spent at the media center each week for several weeks. He spent 8, 2, 5, 10, an

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3 years ago

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Simplify (10-10i)/(-5i)

Phoenix [80]

Answer:

Step-by-step explanation:

$i-\text{imaginary\ unit}\\\\i=\sqrt{-1}\to i^2=-1\\\\=====================$

$\dfrac{10-10i}{-5i}=\dfrac{10}{-5i}+\dfrac{-10i}{-5i}=\dfrac{(10)(i)}{(-5i)(i)}+2=\dfrac{10i}{(-5)(i^2)}+2\\\\=\dfrac{10i}{(-5)(-1)}+2=\dfrac{10i}{5}+1=2i+2=2+2i$

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3 years ago