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natulia [17]
3 years ago
14

Based on the diagram, which expresses all possible lengths of segment AB? AB = 25 27 81

Mathematics
1 answer:
LenKa [72]3 years ago
6 0

Answer:B

Step-by-step explanation:

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What is the roots of f(x)=-x^2-6x-14
Nutka1998 [239]

Answer:

x=-3\pm i \sqrt{5}

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

<u>Algebra I</u>

  • Standard Form: ax² + bx + c = 0
  • Quadratic Formula: x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}

<u>Algebra II</u>

  • Imaginary roots: √-1 = i

Step-by-step explanation:

<u>Step 1: Define function</u>

f(x) = -x² - 6x - 14

<u>Step 2: Set up</u>

  1. Set equation equal to 0:                    -x² - 6x - 14 = 0
  2. Factor out -1:                                       -(x² + 6x + 14) = 0
  3. Divide both sides by -1:                      x² + 6x + 14 = 0

<u>Step 3: Define variables</u>

a = 1

b = 6

c = 14

<u>Step 4: Find roots</u>

  1. Substitute:                              x=\frac{-6\pm\sqrt{6^2-4(1)(14)} }{2(1)}
  2. Exponents:                             x=\frac{-6\pm\sqrt{36-4(1)(14)} }{2(1)}
  3. Multiply:                                  x=\frac{-6\pm\sqrt{36-56} }{2}
  4. Subtract:                                 x=\frac{-6\pm\sqrt{-20} }{2}
  5. Factor:                                    x=\frac{-6\pm\sqrt{-1} \sqrt{20} }{2}
  6. Simplify:                                  x=\frac{-6\pm2i \sqrt{5} }{2}
  7. Factor:                                    x=\frac{2(-3\pm i \sqrt{5} )}{2}
  8. Divide:                                    x=-3\pm i \sqrt{5}
8 0
3 years ago
A square lot has sides of 39.875 m<br> Which is the best estimate for the perimeter of the lot?
Lana71 [14]

Answer:b

Step-by-step explanation:idk

4 0
4 years ago
Hugo is buying DVDs that cost $15 each. He has a coupon for $5 off his total purchase. Write an equation to find the c the total
Allisa [31]

Answer:

85

Step-by-step explanation:

15 times 6 is 90. This is how much money he spends on 6 DVDs if they're all $15. 90 subtracted by 5 (remember - he gets $5 off his entire purchase, not just each individual DVD) would be 85!

4 0
3 years ago
Information about movie ticket sales was printed in a movie magazine. Out of fifty PG rated movies, 38% had ticket sales in exce
Firdavs [7]

Answer: I need to know how to solve this problem, as this problem is incomplete.


Step-by-step explanation:


6 0
4 years ago
#1: Solve the inequality below.<br> -3x + 5 &lt; -19
frosja888 [35]

Explanation: Just like any of your two-step equations,

in this inequality,  start by isolating the x term which in this

case is -3x by subtracting 5 from both sides.

That leaves you with -3x < -24.

To get x by itself, divide both sides by -3 but watch out.

When you multiply or divide both sides of an inequality by a

negative number, you must switch the direction of the inequality sign.

So we have x < 8 and put your final answer in

set notation and it look like this → {x: x < 8}.

4 0
3 years ago
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