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maks197457 [2]
2 years ago
11

I NEED HELPPP ON THIS PLZZZ

Mathematics
1 answer:
Anika [276]2 years ago
3 0

Answer:

Perimeter of ABCD = <u>56 units</u>

Perimeter of WXYZ = <u>140 units</u>

Step-by-step explanation:

<u>To find the perimeter of ABCD, find the sum of all sides</u>

18 + 18 + 10 + 10 = 56

<u>To find the side lengths of WXYZ, use the equation:</u>   \frac{image}{pre-image}

45/18 = 2.5

<em>You can also cross multiply to find the missing side lengths, but I'll show you this other way...</em>

<u>Multiply the pre-image side lengths by 2.5</u>

18 × 2.5 = 45

10 × 2.5 = 25

<em>45 and 25 of the new side length of WXYZ</em>

<em />

<u>To find the perimeter of  WXYZ, find the sum of all sides.</u>

45 + 45 + 25 + 25 = 140

WX = 45, XY = 25, YZ = 45, ZW = 25

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Solve the following logarithmic equations.<br> log[(x^2 + 2x − 3)^4] = 0
saw5 [17]

Answer:

The solutions are x = 1.24 and x = -3.24

Step-by-step explanation:

Hi there!

First, let´s write the equation:

log[(x² + 2x -3)⁴] = 0

Apply the logarithm property: log(xᵃ) = a log(x)

4 log[(x² + 2x -3)⁴] = 0

Divide by 4 both sides

log(x² + 2x -3) = 0

if log(x² + 2x -3) = 0, then  x² + 2x -3 = 1 because only log 1 = 0

x² + 2x -3 = 1

Subtract 1 at both sides of the equation

x² + 2x -4 = 0

Using the quadratic formula let´s solve this quadratic equation:

a = 1

b = 2

c = -4

x = [-b± √(b² - 4ac)]/2a

x =  [-2 + √(4 - 4(-4)·1)]/2 = 1.24

and

x = [-2 - √(4 - 4(-4)·1)]/2 = -3.24

The solutions are x = 1.24 and x = -3.24

Have a nice day!

4 0
3 years ago
Can someone help me with this question
Mashcka [7]
The correct answer here would be D. -1(3x+1)(x+5). You can find this answer by redistributing the problem.

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-1(3x²+16x+5)
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Using the math above, we can see that when we redistribute we get the original equation. That makes Choice D correct.
5 0
3 years ago
Factor this polynomial.
olga55 [171]

Answer:

Hey there!

The correct answer is A.

If you multiply it out with the FOIL method, you get -2x^2-7x-3

Let me know if this helps :)

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Answer:
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