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2 years ago

Is the following number in scientific notation? Why or why not? 45.32 X 105

Mathematics

1 answer:

Georgia [21]2 years ago

5 0

Answer:

Step-by-step explanation:

No the following number is not a scientific notation because The proper format for scientific notation is a x 10^b where a is a number or decimal number such that the absolute value of a is greater than or equal to one and less than ten or, 1 ≤ |a| < 10. b is the power of 10 required so that the scientific notation is mathematically equivalent to the original number.

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If z1 = 12(cos55° + isin55°) and z2 = 4(cos95° + isin95°), then |z1z2|= ???

zaharov [31]

$\bf \begin{cases}
z_1=12[cos(55^o)+i~sin(55^o)]\\\\
z_2=4[cos(95^o)+i~sin(95^o)]
\end{cases}\\\\
-------------------------------$

$\bf ~~~~~~\textit{ product of two complex numbers}\\\\
{{ r_1}}[cos({{ \alpha}})+isin({{ \alpha}})]\quad \cdot \quad {{ r_2}}[cos({{ \beta}})+isin({{ \beta}})]
\\\\\\
\implies {{ r_1\cdot r_2}}[cos({{ \alpha}} + {{ \beta}})+isin({{ \alpha}} + {{ \beta}})]\\\\
-------------------------------\\\\
z_1\cdot z_2\implies 12\cdot 4[cos(55^o+95^o)+i~sin(55^o+95^o)]
\\\\\\
48[cos(150^o)+i~sin(150^o)]
\\\\\\
|~48[cos(150^o)+i~sin(150^o)]~|\implies 48[cos(150^o)+i~sin(150^o)]$

6 0

3 years ago

Ted has a shelf that is 75 over 4 inches wide. How many books can Ted arrange on the shelf if each book is 5 over 4 inches thick

den301095 [7]

75/4 divided by 5/4 is 15 exactly, so 15 books.

4 0

3 years ago

Read 2 more answers

Determine the vertex of the function f(x) = 2(x-4)^2+5

spayn [35]

Answer:

(4,5)

Step-by-step explanation:

The vertex is written in vertex form.

y = a(x - b)^2 + c

Vertex: (b,c) Notice the sign change on b.

So for your equation, you get (4,5) No sign change on the 5.

5 0

3 years ago

A clothing company buys t-shirts for $10 and sells them for $100. What is the percentage mark up on

Mice21 [21]

Answer:

900%

Step-by-step explanation:

Starting price : 10

End price: 100

100-10 = 90

90/10 = 9 = 900%

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

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3 years ago

B=3,c=7 Please help Iam struggling

Afina-wow [57]

Please provide more information

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3 years ago