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ehidna [41]
3 years ago
14

1: 2 + 3a + 9a 2: 7 - 5x + 1

Mathematics
2 answers:
charle [14.2K]3 years ago
8 0

Answer:

1. 2 + 12a

2. -5x + 8

Step-by-step explanation:

ch4aika [34]3 years ago
5 0
1. 2 + 12a
2. -5x + 8
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Item 12
kozerog [31]

Answer:

The height is 4.472

Step-by-step explanation:

That formula is Heron's formula.

Where "s" is calculated like this:

s = (a + b + c) / 2

In this case:

a = 14

b = 12

c = 6

replacing:

s = (14 + 12 + 6) / 2

s = 16

Now we calculate the area:

A ^ 2 = 16 * (16−14) * (16−12) * (16−6)

A ^ 2 = 1280

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The area of the triangle is:

A = b * h / 2

In this case we will take the base as the longest side of the triangle, that is to say = 14

Thus:

h = A * 2 / b

h = 35.777 * 2/16

h = 4.472

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3 years ago
What is the area of the trapezoid
topjm [15]

Answer:

24 in

Step-by-step explanation:

Add up all the inches. voila!

5 0
3 years ago
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In the diagram, BC is a radius of C. Determine whether AB is tangent to C. Explain your reasoning.
Whitepunk [10]

Answer:

No, AB is not tangent to C.

If it were tangent, it would form a right angle with the radius, and we could use Pythagorean's Theorem.

3²+6²=7²

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Step-by-step explanation:

No, AB is not tangent to C.

If it were tangent, it would form a right angle with the radius, and we could use Pythagorean's Theorem.

3²+6²=7²

9+36=49

45=49  Since this is false, it's not a right angle, and AB is not tangent.

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3 years ago
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mihalych1998 [28]
1/8x - 5 < - 8 7x - 4 > 38
+ 5 +5 +4 +4
1/8x < -3 7x > 42
÷1/8 ÷1/8 ÷7. ÷7
x = 24 x > 6

6 0
3 years ago
Read 2 more answers
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