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stealth61 [152]
4 years ago
9

Geometry help me please

Mathematics
1 answer:
weqwewe [10]4 years ago
3 0
First Answer: Transitive property of Equality

Explanation: If x = y and z = y, then x = z. This is the basic template. In this case, both left side expressions of the problem are equal to 180, so they must be equal

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

Second Answer: Alternate Interior Angles Theorem

Explanation: These angles are on the inside of the parallel line train tracks (hence the "interior") and they are on opposite sides of the transversal line (hence the "alternate"). Alternate interior angles are congruent if the lines are parallel, which they are in this case.
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Which set of numbers could be the length of the sides of a triangle?
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3. {6,9,15)

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What is the side length a in the triangle below?
grigory [225]

Answer:

a=5

Step-by-step explanation:

a^2+b^2=c^2

c^2-b^2=a^2

13^2-12^2=a^2

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Solve for d.<br> 2d+3=7d+18
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Answer: d = -3

Step-by-step explanation:

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The regular price of The Mario Kart 8 Deluxe video game is $59.99. On Amazon, the discount is $10.05. What is the percent discou
DanielleElmas [232]

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the length of a rectangle is 3cm more than the width. find the length and the width if the perimeter of the rectangle is 98cm.
laila [671]

The perimeter of a rectangle is <u>length + length + width + width</u>.

We know that the length of a rectangle is 3cm more than its width, which gives us the equation:  (l for length and w for width)

l = 3 + w

We also know that the perimeter of the rectangle is 98cm, which gives us the equation:

98 = 2l + 2w         (equation for perimeter of a rectangle as noted above)

We can divide both sides of this equation by 2 to get:

49 = l + w

Now we'll stick l = 3 + w into the above equation, which gives us:

49 = 3 + w + w

which simplifies to 49 = 3 + 2w.

Now we'll subtract 3 from both sides:

49 - 3 = 46

3 + 2w - 3 = 2w

which gives us 46 = 2w.

Dividing both sides by 2 gives us 23 = w.

Substituting w = 23 into the equation l = 3 + w gives us:

l = 3 + 23

l = 26cm.

Let's check our answer.  26cm is 3cm more than 23cm.  26cm + 26cm + 23cm + 23cm gives us 98cm.  The length is 26cm and the width is 23cm.


7 0
3 years ago
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