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Alexus [3.1K]
3 years ago
11

Square ABCD has coordinates A(−10, 5) , B(10, 5), C(10, 0) , and D(−10, 0) . Square A'B'C'D' has coordinates A′(−10,−5),B′(10,−5

) , C'(10, 0) , and D′(−10, 0) . Square A"B"C"D" has coordinates A′′(−2, −1), B′′(2, −1) , C"(2, 0) , and D′′(−2, 0) .
Which transformations describe why squares ABCD and A"B"C"D" are similar?

​ A).Square ABCD ​ was reflected across the y-axis and then dilated by a scale factor of 5 to form ​ square A"B"C"D" ​

​ B).Square ABCD ​ was dilated by a scale factor of 5 and then rotated 90° counterclockwise to form ​ square A"B"C"D" ​ .

C).​ Square ABCD ​ was reflected across the x-axis and then dilated by a scale factor of 1/5 to form square A"B"C"D" .

D).​ Square ABCD ​ was dilated by a scale factor of 1/5 and then rotated 90° counterclockwise to form ​ square A"B"C"D" ​
Mathematics
1 answer:
neonofarm [45]3 years ago
8 0
The answer would either be A or D
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Step-by-step explanation:

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When we plug that in we get \frac{-3-2}{6- (-4)} = \frac{-5}{10} = -\frac{1}{2}

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What is the value of f(-4)?<br> f(-4) =_____
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5 0
3 years ago
What is the solution to 3(–3x + 9) = −18?
Rus_ich [418]

Answer:

x = 5 (If solved algebraically)

No Solution (If the parentheses are absolute value lines)

Step-by-step explanation:

Result when solving this way: 3|-3x + 9| = -18

1) Divide both sides by 3
|-3x + 9| = -18/3

2) Simplify 18/3 to 6

|-3x + 9| = -6

3)  Break down the problem into these 2 equations.

-3x + 9 = -6

- (-3x + 9) = -6

4) Solve the 1st equation: -3x + 9 = -6

- Subtract 1 from both sides.

-3x = -6 - 9

-Simplify -6 - 9 to -15.

-3x = -15

-Divide both sides by -3.

x = -15/-3

- Two negatives make a positive.

x = 15/3

- Simplify 15/3 to 5.

x = 5

6)  Solve the 2nd equation:  - (-3x+ 9) = -6

1 - Remove parentheses

3x - 9 = -6

2 - Add 9 to both sides

3x = -6 + 9

3 - Simplify -6 + 9 to 3.

3x = 3

- Divide both sides by 3.

x = 1

6) Collect all solutions.

x = 1,5

7) Check solution.

When x = 1, the original equation 3|-3x + 9| = -18 does not hold true.

We will drop x = 1 from the solution set.

8) Check solution.

When x = 5, the original equation 3|-3x + 9| = -18  does not hold true.

We will drop x = 5 from the solution set.

9) Therefore,

No solution exists.

Result when solving algebraically:

Simplifying

3(-3x + 9) = -18

Reorder the terms:

3(9 + -3x) = -18

(9 * 3 + -3x * 3) = -18

(27 + -9x) = -18

Solving

27 + -9x = -18

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-27' to each side of the equation.

27 + -27 + -9x = -18 + -27

Combine like terms: 27 + -27 = 0

0 + -9x = -18 + -27

-9x = -18 + -27

Combine like terms: -18 + -27 = -45

-9x = -45

Divide each side by '-9'.

x = 5

Simplifying

x = 5

5 0
2 years ago
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