Solve each quadratic equation. Show your work. 14. (2x – 1)(x + 7) = 0 15. x^2 + 3x = 10 16. 4x2 = 100

Answers

Answer 1

Answer: 14.)

2x(x + 7) -1(x + 7) = 2x² + 14x - x - 7 = 2x² + 13x - 7 ...//Ans ...

15.)

x² + 3x - 10 = x² + 5x - 2x - 10 = x(x + 5) -2(x + 5) = (x - 2) (x + 5) ...//Ans ...

16.)

4x² = 100
x² = 100 ÷ 4 = 25
x = √25 = 5 ...//Ans ...

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I really need help with #1 a and b
Quick! Please Help Me ASAP!

Which expression is equivalent to 6x+8 PLZZZZZZZZZZZZ HEWLPPP!2(3x-4)
2(3x+4)
2(4x+6)
2(3x+8)

Answers

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➷ Expand them all to see if you get the expression:

2(3x - 4) ==> 6x - 8

2(3x + 4) ==> 6x + 8

2(4x + 6) ==> 8x + 12

2(3x + 8) ==> 6x + 16

As you can see, the correct option is B. 2(3x + 4)

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Answer:

So the second one

Step-by-step explanation:

2(3x-4) =6x-8

2(3x+4)=6x+8 2x3=6 2x4=8

2(4x+6)=8x+12

2(3x+8)=6x+16

If EN=16 and BN=20 what is the scale factor of the dilation?

Answers

The scale factor of the dilation is approximately 1.25.

To find the scale factor of the dilation, we need to compare the corresponding side lengths of the original figure and the dilated figure.

Let's consider the two corresponding side lengths:

Original side: EN = 16 units

Dilated side: BN = 20 units

The scale factor (k) of the dilation is the ratio of the corresponding side lengths in the dilated figure to the original figure. It can be calculated using the formula:

Scale factor (k) = Dilated side length / Original side length

Substituting the given values:

k = 20 / 16 ≈ 1.25

for such more question on scale factor

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Simplify i^15. (imaginary numbers to the 15th power)