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Artyom0805 [142]
3 years ago
14

Find the value of aa for which v=⎡⎣⎢⎢⎢5a−74⎤⎦⎥⎥⎥v=[5a−74] is in the set h=span⎧⎩⎨⎪⎪⎪⎪⎪⎪⎡⎣⎢⎢⎢5−1−5−2⎤⎦⎥⎥⎥,⎡⎣⎢⎢⎢05−2−2⎤⎦⎥⎥⎥,⎡⎣⎢⎢⎢0

015⎤⎦⎥⎥⎥⎫⎭⎬⎪⎪⎪⎪⎪⎪h=span{[5−1−5−2],[05−2−2],[0015]}.
Mathematics
1 answer:
masha68 [24]3 years ago
6 0
I am a little confused, if there any answer thingys? :/
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A square has side length (x+5) units. What is it’s area
daser333 [38]

The area of square is x^{2}+10 x+25 square units

<h3><u>Solution:</u></h3>

Given that square has side length (x+5) units

To find: area of square

<em><u>The area of square is given as:</u></em>

\text {Area of square }=\mathrm{a}^{2}

Where "a" is the length of side

From question, length of each side "a" = x + 5 units

Substituting the value in above formula,

\text {Area of square }=(x+5)^{2}

{\text {Expanding }(x+5)^{2} \text { using the algebraic identity: }} \\\\ {(a+b)^{2}=a^{2}+2 a b+b^{2}}\end{array}

\begin{array}{l}{\text {Area of square }=x^{2}+2(x)(5)+5^{2}} \\\\ {\text {Area of square }=x^{2}+10 x+25}\end{array}

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7 0
3 years ago
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gogolik [260]

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subtract 4x from both sides

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So, you would have to sell a minimum of 319 books in order to make a profit.

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May I have brainliest please? :)

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Rewrite the fractions with their LCD.
masya89 [10]
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I hope this helps!
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melisa1 [442]
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