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navik [9.2K]
3 years ago
12

一、225 + 4.8 I don’t understand it plz help (And do it step by step...)

Mathematics
1 answer:
nalin [4]3 years ago
5 0

\bf -\sqrt{225}+4.8~~ \begin{cases} 225=&3\cdot 3\cdot 5\cdot 5\\ &3^2\cdot 5^2\\ &(3\cdot 5)^2\\ &15^2 \end{cases}\\\\\\ -\sqrt{15^2}+4.8\implies -15+4.8\implies -10.2

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Answer:

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    First, we will look at assembling hours.

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    Lastly, they do not <em>need</em> to make that many, but they <em>can</em> so we will use greater than or equal to.

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    Now let us look at finishing hours.

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5 0
2 years ago
The sum of two numbers is 18 and the difference is 8
Andrews [41]

Answer:

x = 13 and y = 5

Step-by-step explanation:

x + y = 18

x - y = 8

<u>Step 1:  Find y</u>

x = 18 - y

(18 - y) - y = 8

18 - y - y - 18 = 8 - 18

-2y / -2 = -10 / -2

<em>y = 5</em>

<em />

<u>Step 2:  Plug into x + y = 18 to get x</u>

x + 5 - 5 = 18 - 5

<em>x = 13</em>

<em />

Answer:  x = 13 and y = 5

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