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gregori [183]
3 years ago
7

Let A=3i-j-4k,B=-2i+4j-3k and C=i+2j-k compute 2A-B+3C​

Mathematics
1 answer:
Paladinen [302]3 years ago
7 0

A = 3i - j - 4k

B = -2i + 4j - 3k

C = i + 2j - k

2A - B + 3C =

= 2(3i - j - 4k) - (-2i + 4j - 3k) + 3(i + 2j - k) =

= 6i - 2j - 8k + 2i - 4j + 3k + 3i + 6j - 3k =

= 6i + 2i + 3i - 2j - 4j + 6j - 8k + 3k - 3k =

= <u>1</u><u>1</u><u>i</u><u> </u><u>-</u><u> </u><u>8</u><u>k</u>

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<h3>The formula to find unit rate is:</h3>

<em>divide the denominator with the numerator in a way that the denominator becomes 1</em>

<h2>Now,</h2>

\begin{gathered}\\ \sf\longmapsto \frac{80}{5}\end{gathered}

\begin{gathered}\\ \sf\longmapsto\cancel{\dfrac{80}{5}} \end{gathered}

\begin{gathered}\\ \sf\longmapsto 16\end{gathered}

<u>Hence, The unit rate is 16 rooms per floor.</u>

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2 years ago
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At the end of her work day, Rosa leaves her office and goes directly to her bank. On the graph that shows the locations of Rosa'
ikadub [295]
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7 0
3 years ago
Math<br><img src="https://tex.z-dn.net/?f=%282a%20%2B%203%29%20%2B%20%283a%20-%207%29" id="TexFormula1" title="(2a + 3) + (3a -
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5a -4

Step-by-step explanation:

Given

(2a + 3) + (3a - 7) ← remove parenthesis

= 2a + 3 + 3a - 7 ← collect like terms

= (2a + 3a) + (3 - 7)

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3 0
3 years ago
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Twelve is at least<br> number x decreased<br> by 7.
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x is greater than or equal to 19

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3 years ago
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Your equation states y = 4(-1) + 3

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The addition property is included now,

-4 + 3 = -1

Therefore, your answer would be y = -1


Hope this helped! :D

7 0
3 years ago
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