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Novosadov [1.4K]
3 years ago
8

Please helpwhat is the solution to the system? Use substitution y=x+5 -2x+12=y

Mathematics
1 answer:
Novay_Z [31]3 years ago
5 0
X+5 = -2x + 12
-5 -5
x = -2x + 7
+2x +2x
3x = 7
x = 2 1/3


y = x + 5
y = 2 1/3 + 5
y = 7 1/3
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Given angle D= 60 degrees, determine the PERIMETER of triangle ABC.
vaieri [72.5K]

Answer:

15*(1+root(3))

Step-by-step explanation:

BD=5, BC=5*root(3), you can find it by using trigonometry.

  • AC^2+DC^2=AD^2

AC^2=300, AC=10*root(3)

  • AB^2+BC^2=AC^2

AB^2=225, AB=15.

Perimeter of ABC is AB+BC+CA=15+5*root(3)+10*root(3).

15(1+root(3))

5 0
3 years ago
Mr. Turney wrote the value statement "x = 2" on the whiteboard. He asked his students to create an equation or inequality with t
boyakko [2]

Answer:

Some of the equations can be written as-

1. 2x = 4

2. 3x + 9 = 15

3. x + 5 = 7

4. 5x - 2 = 8

Step-by-step explanation:

Given - Mr. Turney wrote the value statement "x = 2" on the whiteboard.

To find - He asked his students to create an equation or inequality with

              this value as a solution.

Proof -

Given that, The value statement is ''x = 2''

We have to find out that equation in such a way that if we solve the equation , we get the value x = 2

There can be infinite many equation that give the value statement '' x = 2''

Some of the equations can be written as-

1. 2x = 4

2. 3x + 9 = 15

3. x + 5 = 7

4. 5x - 2 = 8

And many more.

Verification -

1. 2x = 4

⇒x = \frac{4}{2}

⇒x = 2

Verified

2. 3x + 9 = 15

⇒3x = 15 - 9

⇒3x = 6

⇒x = \frac{6}{3}

⇒x = 2

Verified

3. x + 5 = 7

⇒x = 7 - 5

⇒x = 2

Verified

4. 5x - 2 = 8

⇒5x = 8 + 2

⇒5x = 10

⇒x = \frac{10}{5}

⇒x = 2

Verified

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2 years ago
List all pairs of matching angles
anyanavicka [17]

Answer:

Listed

Please mark me as the brainliest and thanks

3 0
3 years ago
Kim plays basketball for her high school. During 1 month, she played 9 games. The number of points she scored in each game Is li
USPshnik [31]
The answer is C. She scored 8 points
8 0
3 years ago
Write 408,032,009 in expanded form
deff fn [24]
Expanded form means breaking the number into addition.



408,032,009 = 400,000,000 + 8,000,000 + 30,000 + 2,000 + 9
5 0
3 years ago
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