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arlik [135]
3 years ago
10

If AD = y + 6 and DC = 2y, what is the length of DC? 12 -12 -15 15

Mathematics
2 answers:
babymother [125]3 years ago
5 0
Y+6=2y
-y=-6
y=6
The length of DC is 12
Ira Lisetskai [31]3 years ago
5 0

Answer:

DC=12\ units

Step-by-step explanation:

Step 1

<u>Find the value of y</u>

In this problem we know that

AD=DC -----> equation A

ED=DB

see the attached figure to better understand the problem

so

we have

AD=y+6

DC=2y

substitute the values in the equation A

y+6=2y

solve for y

2y-y=6

y=6\ units

Step 2

Find the value of DC

we have that

DC=2y

substitute the value of y

DC=2(6)=12\ units


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kipiarov [429]
It would be 75 cents per song, I hope you get a good grade!
5 0
2 years ago
Algebra help?<br><br> 343 = (x/6) ^2/3
Vladimir79 [104]

I can only assume that you meant, "Solve for x:"

Apply the exponent 3/2 to both sides of this equation.  The result will be

     3/2

343 = x/6.    

Multiplying both sides by 6 isolates x:

          3/2

6*343           = x                         Since 7^3 = 343,  the expression for x

                                                  can be rewritten as

           3/2

6*(7^3)          =   x                      which can be further simplified, as follows:


x =  6^(3/2)*7^(9/2), or:

x = 6^(3/2)*7^(8/2)*√7, or

x = 6^(3/2)*7^4*√7

3 0
3 years ago
Suppose a jar contains 8 red marbles and 14 blue marbles. If you reach in the jar and pull out 2 marbles at random, find the pro
NikAS [45]

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8 0
1 year ago
Rectangle A has a length of 2x + 6 and a width of 3x. Rectangle B has a length of x + 2 and an area of 12 square units greater t
Maurinko [17]
So here is how you solve for the answer.
Firstly, you solve for the Area of Rectangle A.
The formula for Area is Length x width.
So A = (2x + 6)(3x) and the result is: 6x^2 + 18x
Now, let y be the width of rectangle B.
<span>(x+2) (y) = 6x^2 + 18x + 12
(x+2) y = 6(x+1)(x+2)
y = 6(x+1)
</span>So the final answer would be width is 6x + 6. The answer is the third option. Hope this answer helps.
7 0
3 years ago
What is the measure of angle BAC?
KATRIN_1 [288]

Answer:

∠BAC = 105°

Step-by-step explanation:

2(5x) = 9x+21

10x = 9x+21

reduce:

x = 21

∠BAC = 5x = 105°

8 0
2 years ago
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