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WINSTONCH [101]
3 years ago
6

Solve the following equations for x -11=3-7(x-1)

Mathematics
2 answers:
Neporo4naja [7]3 years ago
8 0

Answer:

x = 21/8

Step-by-step explanation:

x - 11 = 3 - 7x + 7

8x = 21

x = 21/8

lesya692 [45]3 years ago
3 0

Answer:

x = 21/8

Step-by-step explanation:

Step 1: Write equation

x - 11 = 3 - 7(x - 1)

Step 2: Solve for <em>x</em>

<u>Distribute -7:</u> x - 11 = 3 - 7x + 7

<u>Combine like terms:</u> x - 11 = 10 - 7x

<u>Add 7x on both sides:</u> 8x - 11 = 10

<u>Add 11 on both sides:</u> 8x = 21

<u>Divide both sides by 8:</u> x = 21/8

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melisa1 [442]

Answer:

A)  5x + 2y = 22

B) -2x + 6y = 3  We'll multiply A) by -3

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Step-by-step explanation:

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2 years ago
Look at the proof. Name the postulate you would use to prove the two triangles are congruent.
vovikov84 [41]

Answer:

Option A, SSS Postulate

Step-by-step explanation:

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3 0
2 years ago
To win the carnival game Ring Ding, you must toss a wooden ring onto a grid of rectangles so that it lands without touching any
guapka [62]

Answer:

5in x 10in

Step-by-step explanation:

Solution:

1.  You have to assume that the ring will land on the board and as a result, just focus on one rectangle of the board since they are all the same size.  

 

2.  For the ring to land entirely inside the rectangle, the center of the ring needs to be 1.5 inches inside the border (radius is 1.5 inches), so the "winning rectangle" will have dimensions:

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                              w = (2x - 2(1.5)) = 2x-3.

 

3.  Now, we will set up and solve our geometric probability equation.  The winning rectangle's area of (x-3)*(2x-3) divided by the total rectangle's area of x*(2x) = 28%

 

                                (2x-3)*(x-3)/(2x^2) = .28

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4 .  Now you can plug that in the quadratic formula and get the solutions x = 1.25 or 5.  However, it cannot by 1.25 because that is too small of a dimension for the the circle with diameter of 3 to fit in, the answers has to be 5.

 

5. As a result, the dimensions of the rectangles are 5in x 10in.  

6 0
3 years ago
Someone help me i’ll give brainlest if you answer this one and my other few
zhuklara [117]

Answer:

A

Step-by-step explanation:

7 0
2 years ago
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It’s supposed to be (5,9) both numbers positive
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2 years ago
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