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Soloha48 [4]
3 years ago
12

Which is a solution to the equation?

Mathematics
2 answers:
Alona [7]3 years ago
8 0
The answer is -7 letter B
stiks02 [169]3 years ago
3 0
If you would like to know the solution to the equation (x - 2) * (x + 5) = 18, you can calculate this using the following steps:

(x - 2) * (x + 5<span>) = 18
</span>x^2 + 5x - 2x - 10 = 18
x^2 + 3x - 28 = 0
(x + 7) * (x - 4) = 0
1. x = - 7
2. x = 4

The correct result would be x = - 7.
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I am so stuck! :( Pls help me!!! I don't get the problem and I don't know how to solve it
Lelu [443]

Answer:

\frac{n^{2}}{2a}

Step-by-step explanation:

  • Just split it up first \frac{9an^{3}}{18a^{2}n}=\frac{9}{18}\times \frac{a}{a^2} \times\frac{n^3}{n}
  • Then 9 divided by 18 can be simplified into the fraction 1/2
  • What can go into a and a^2 ? a itself right, so if you divide a by a you get 1, if you divide a^2 by a you get a
  • Same as the a fraction, if you divide n^3 by n you get n^2
  • \frac{9an^{3}}{18a^{2}n}=\frac{9}{18}\times \frac{a}{a^2} \times\frac{n^3}{n}=\frac{1}{2}\times \frac{1}{a} \times\frac{n^2}{1}=\frac{n^{2}}{2a}
4 0
3 years ago
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A silversmith mixed 100 g of a 40% silver alloy with 40 g of
notsponge [240]
Hey, don’t call for that link thing. It’s fake. Here’s how I solved this: x = [35(80%) + 70(25%)]/(35 + 70) = 43.3%

The answer is 43.3%
6 0
3 years ago
2y+7z-2z+4y+8+y+2 Combine Like Terms
Andrew [12]

Answer:

7y+5z+10

Step-by-step explanation:

7y+5z+10

8 0
2 years ago
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The scale on a map is 1 in/50miles. Use this scale to determine the distance between two towns that are 3.25 inches apart. *
Alex787 [66]

Answer:

you are from the school pinecrest glades arent you?? >:(

Step-by-step explanation:

8 0
2 years ago
Can someone help me find AB and BC
Bond [772]

  • 3x + 2x + 5 + 5x + 15 = 180 [angles on a line add to 180 degrees]
  • 10x + 20 = 180 [combine like terms]
  • 10x = 160 [subtract 20 from both sides]
  • x = 16 [divide both sides by 10]

Arc AB measures 3(16) = 48 degrees.

Arc BC measures 2(16) + 5 = 41 degrees.

7 0
2 years ago
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