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Luda [366]
3 years ago
7

How do I do this question, I'm very confused, I need an answer quickly

Mathematics
1 answer:
Sati [7]3 years ago
4 0
1) AB/AC = 1/2
(3x-4)/(2x+12) =1/2
2(3x-4) = 1(2x+12)
6x - 8 = 2x +12
4x = 20 And x = 5

2) Prove AC/BC 2/3 ===== (2x+12)/(7x-2) = 2/3;
Plug in x = 5:

(10+12)/(35-2) = 22/33. Simplify numerator & denominator by 11

(2)(11)/(3)(11) = 2/3
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Help Evaluate when x=3.1<br> 2x + 1.5x
nexus9112 [7]

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10.85

Step-by-step explanation:

2x + 1.5x  x=3.1

simply plugg in <em>3.1 for X</em>

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3 years ago
Can someone please help me
Aleksandr-060686 [28]

Answer:

1. a=3

2. a=3

3. a=9

Step-by-step explanation:

1. 9/a+9-4=12-56/8+3

We move all terms to the left:

9/a+9-4-(12-56/8+3)=0

Domain of the equation: a=0

a∈R

We add all the numbers together, and all the variables

9/a+9-4-8=0

We add all the numbers together, and all the variables

9/a-3=0

We multiply all the terms by the denominator

-3*a+9=0

We add all the numbers together, and all the variables

-3a+9=0

We move all terms containing a to the left, all other terms to the right

-3a=-9

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2 years ago
Find the area of the trapezoid by decomposing it into other shapes.
Tpy6a [65]

Answer:

B

Step-by-step explanation:

19 plus 11 times 3 divided by 2

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