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MrRa [10]
3 years ago
15

Can someone please take a look at the attachment and tell me what the answer is? Serious answers only please!

Mathematics
1 answer:
siniylev [52]3 years ago
5 0
The solid line indicates that the line itself is included in the solutions.  That the shaded area is to the left, or under, the line means that y≤the line.

To find the equation of the line you first find the slope or m using any two points.

m=(y2-y1)/(x2-x1)  in this case you are given (2,-5) and (-2, 3) so

m=(3--5)/(-2-2)

m=8/-4

m=-2

So far for y≤mx+b we have:

y=-2x+b  using either point we can solve for b, I'll use (2,-5)

-5=-2(2)+b

-5=-4+b

-1=b

So the line is:

y=-2x-1  and since y≤ the line:

y≤-2x-1
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The width of a rectangle is five less than twice the length. What is the minimum area of the rectangle?
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W=2L-5

-------------

A=L*W

=L(2L-5)

=2L²-5L

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dA/dL=4L-5

When dA/dL=0,

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4L=5

L=5/4

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When L=5/4

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7 0
3 years ago
Quadrilateral ABCD ​ is inscribed in this circle.
miskamm [114]

The measure of angle A is 65°

Explanation:

Given that ABCD is a quadrilateral inscribed in a circle.

The measure of angle A is \angle A=(2x+1)^{\circ}

The measure of angle B is \angle B=148^{\circ}

The measure of angle D is \angle D=x^{\circ}

We need to determine the measure of angle A.

Since, we know that the angles B and D are opposite angles and the opposite angles of a quadrilateral add up to 180°

Thus, we have,

\angle B+\angle D=180^{\circ}

Substituting the values, we have,

148^{\circ}+x=180^{\circ}

          x=32^{\circ}

Thus, the value of x is 32°

Substituting the value of x in the measure of angle A, we get,

\angle A=(2x+1)^{\circ}

\angle A=(2(32)+1)^{\circ}

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\angle A=65^{\circ}

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3 years ago
Select one:
Akimi4 [234]
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