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TiliK225 [7]
3 years ago
15

If AD = 3x + 3 and CD = x + 9, what is the value of x?

Mathematics
2 answers:
tiny-mole [99]3 years ago
8 0
X is equal to three in this
Vikentia [17]3 years ago
6 0
The answer will be x = 3
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Solve each prportion. (2/y-4)=(y+3/4)
vampirchik [111]

Answer:

y = 5, -4

Step-by-step explanation:

To solve proportions you cross-multiply.

\frac{2}{y-4} =\frac{y+3}{4} \rightarrow 2\times4 = (y-4)\times(y+3) \rightarrow 8=y^2-y-12

Now that we have 8 = y^2 - y - 12, we must make the entire trinomial equal to 0 by subtracting 8 from both sides.

y^2 - y - 20 = 0

Factor the trinomial.

(y - 5)(y + 4) = 0

Make both factors equal to 0 to solve for both values of y.

  • y - 5 = 0 --> y = 5
  • y + 4 = 0 --> y = -4

y = 5, -4

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3 years ago
Alina has just received 333 video games for her birthday to add to her existing 121212 video games. A week later she went to the
Katarina [22]
[(121212+333)(2)]+555
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3 years ago
Select the correct answer.
photoshop1234 [79]

Answer:

A.

General Formulas and Concepts:

<u>Math</u>

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<u>Algebra I</u>

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Step-by-step explanation:

Where the 2 lines intersect is the solution to the systems of equations.

5/2 would be 2.5 and 4/3 would be approximately 1.333.

Our (x, y) for the graph is (2.405, 1.357), so our answer would be A.

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3 years ago
Find the height of a square pyramid that has a volume of 75 ft.³ and a base length of 5 feet
elena-s [515]
I don't know but I guess there is an answer
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A cone has a volume of 60pie cubic feet. If the radius is 2 feet what is the height of the cone
CaHeK987 [17]

Answer:h=60×2

=120

Step-by-step explanation:

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3 years ago
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