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zvonat [6]
3 years ago
15

34(4a + 12) = 21 a = please find my answer

Mathematics
1 answer:
noname [10]3 years ago
8 0

Answer: a = 2,84

Step-by-step explanation:

34(4a + 12) = 21 a =

136a + 408 = 21

136a = -408 + 21

136a = - 387

a =   <u>- 387 </u>

         136

a = - 2,84

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Answer:

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Step-by-step explanation:

See the attached figure to the question.

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In Δ OAC, we have AO = OC. Hence, ∠ A = ∠C = 60° {Given that ∠OAC = 60°}

So, ∠ AOC will automatically become 60°. {As the sum of all the angles of a triangle is 180°}

So, Δ AOC is equilateral triangle.

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8 0
3 years ago
Heather was asked to graph 2x + 4y = 12 by using slope and y-intercept. Her graph is shown.
blagie [28]
The problem statement says "the graph is shown," but you haven't shared it.  Please do that if possible.  Thank you.

<span>Heather was asked to graph 2x + 4y = 12 by using slope and y-intercept.

We can quickly put this into slope-intercept form:  
                                                                                                 12 - 2x
Subtract 2x from both sides:  2x - 2x + 4y = 12 - 2x  =>   y = ------------ 
                                                                                                      4

In simplest form, this is y = 3 - (1/2)x, or (-1/2)x + 3.  The slope is -1/2 and the y-intercept is (0,3).</span>
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4 years ago
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