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natita [175]
3 years ago
15

Answer a) 4x4x4x5x5 using index notation b) 9x7x9x9x7x9 using index notation

Mathematics
2 answers:
Murljashka [212]3 years ago
7 0

Answer:

4^3x5^2, 7^2x9^4

Step-by-step explanation:

Where a^b means a to the power b. When writing on paper b should be small and above and to the right of a. Keep the bottom numbers in order, so 4 before 5 and so on. In a there are 3 4s and 2 5s, hence the answer. Same reasoning for b.

harina [27]3 years ago
3 0

Answer:

a) 4^3 × 5^2

b) 9^4 × 7^2

Step-by-step explanation:

___________

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Answer:

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Step-by-step explanation:

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5 0
2 years ago
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6 0
3 years ago
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Given 5n² + 6n + 7 = n² - 4n : a. Find the value of the discriminant. b. State the number and type of roots/solutions/zeros.[2 r
Vika [28.1K]
\bf 5n^2+6n+7=n^2-4n\implies 5n^2+6n+7-n^2+4n=0
\\\\\\
4n^2+10n+7=0\\\\
-------------------------------\\\\
\begin{array}{llccll}
&{{ 4}}x^2&{{ +10}}x&{{ +7}}\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}
\\\\\\
discriminant\implies b^2-4ac=
\begin{cases}
0&\textit{one solution}\\
positive&\textit{two solutions}\\
negative&\textit{no solution}
\end{cases}

if you get a positive value, that means 2 real solutions
if you get 0, means 1 real solution only
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4 0
3 years ago
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