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3 years ago

If someone helps me with this question I will put them as a brainliest thank you

Mathematics

1 answer:

pentagon [3]3 years ago

7 0

8 ÷ 0.001 = 8 000
a) 8 ÷ 0.0001 = 80 000

8 ÷ 0.001 = 8 000
b) 8 ÷ 0.01 = 800

8 ÷ 0.001 = 8 000
8 ÷ 1/10 = 8 ÷ 0.1 = 80
c)8 ÷ 0.01 = 8 000

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Which point would map onto itself after a reflection across the line y = –x?

Softa [21]

Answer:

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Step-by-step explanation:

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2 years ago

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Suppose a and b are both non zero real numbers. Find real numbers c and d such that 1/a+ib= c+id

Thepotemich [5.8K]

$\begin{gathered} c=\frac{a}{a^2+b^2} \\ d=\frac{-b}{a^2+b^2} \end{gathered}$

Explanation

$\frac{1}{a+bi}=c+di$

Step 1

multiplicate by the conjugate

$\begin{gathered} \frac{1}{a+bi}\cdot\frac{a-bi}{a+bi}=\frac{a-bi}{(a+bi)(a-bi)}=\frac{a-bi}{a^2-(bi)^2} \\ \frac{1}{a+bi}\cdot\frac{a-bi}{a+bi}=\frac{a-bi}{(a+bi)(a-bi)}=\frac{a-bi}{a^2-(-b^2)}=\frac{a-bi}{a^2+b^2} \end{gathered}$

notice that

$\begin{gathered} \frac{1}{a+bi}=\frac{a-bi}{a^2+b^2}=\frac{a}{a^2+b^2}-\frac{b}{a^2+b^2}i \\ \frac{a}{a^2+b^2}-\frac{b}{a^2+b^2}i=c+di \\ so \\ \end{gathered}$ $\begin{gathered} c=\frac{a}{a^2+b^2} \\ d=\frac{-b}{a^2+b^2} \end{gathered}$

I hope this helsp you

6 0

1 year ago

Please help this is due in 2 periods.

Ksenya-84 [330]

Answer:

Step-by-step explanation:

Use Pemdas.

Parentesis first so 5+4 = 9 and 8-6=2 so, 9X2=18+3=21

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3 years ago

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kozerog [31]

Answer:

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Step-by-step explanation:

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3 years ago

The question is on the picture

Vadim26 [7]

<em>Answer,</em>

100,000,000 > 334,605,925

But, 100,000,000 is smaller that 334,605,952

So, It would be "100,000,000 < 334,605,925"

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3 years ago