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ruslelena [56]
3 years ago
7

Please help me with this, I'd really appreciate it :)

Mathematics
2 answers:
WARRIOR [948]3 years ago
8 0
∠DCB = 128° and ∠ECD = 52°
dexar [7]3 years ago
5 0
I found this question on google and it says that ∠DCB = 128° and ∠ECD = 52° is the answer, its been approved by 5 different people as right :-)
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3 years ago
Mrs. Nelson has a rectangular flower box that is 5 feet long and 2 feet tall. She wants the width of the box to no more than 5 f
d1i1m1o1n [39]
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3 years ago
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julia-pushkina [17]
<h2>Answer:  a = ¹/₂ (4 + b)</h2>

<h3>Step-by-step explanation:</h3>

To solve for 'a' we have to make it the subject of the equation. Since there are two unknowns ('a' & 'b'), we won't get a numerical value of 'a', but an expression in terms of the second unknown 'b'.

Since 2a - b = 4                    <em> [add 'b' to both sides]</em>

then          2a = 4 + b             <em>[divide both sides by 2 = multiplying by  ¹/₂]</em>

                   a = ¹/₂ (4 + b)

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