If the spinner is spun, what is the probability that the spinner will land on a multiple of 5?

Mathematics

1 answer:

ruslelena [56]2 years ago

8 0

Answer:

1/5

Step-by-step explanation:

The only options are 5 and 10. That means your odds are 2/10 which equals 1/5

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Rationalize the denominator of square root of negative 9 over open parentheses 4 minus 7 i close parentheses minus open parenthe

AlekseyPX

The answer is
$\frac{-6i-3}{5}$ .

Before we rationalize the denominator, we must simplify the numerator and denominator. We evaluate the square root on the top, and combine like terms on the bottom:
$\frac{\sqrt{-9}}{(4-7i)-(6-6i)}
\\
\\=\frac{\sqrt{9i^2}}{4-6-7i--6i}
\\
\\=\frac{3i}{-2-i}$

To rationalize the denominator, we multiply by the conjugate. The conjugate is found by making the imaginary term of the complex number, the i part, the opposite sign. The conjugate of -2-i is -2+i:

$\frac{3i}{-2-i}\times \frac{-2+i}{-2+i}
\\
\\=\frac{3i(-2+i)}{(-2-i)(-2+i)}
\\
\\=\frac{3i\times -2 + 3i\times i}{-2\times -2 + -2\times i + -2\times -i + -i\times i}
\\
\\=\frac{-6i+3i^2}{4-2i+2i-i^2}
\\
\\=\frac{-6i+3(-1)}{4-i^2}=\frac{-6i-3}{4-(-1)}=\frac{-6i-3}{5}$

7 0

3 years ago

Helppppppppppppp pleaseeeeeeeeeeeee

kow [346]

Answer:

the one on the right y=4x

Step-by-step explanation:

even if u switch out x it will yeah

5 0

2 years ago

Read 2 more answers

A street sign is 8ft 1 inch tall. How tall is it in inches?