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slamgirl [31]
3 years ago
7

What is the answer to the equation x squared minus 2x equals 15.

Mathematics
1 answer:
anzhelika [568]3 years ago
7 0

Answer:

x = 5 \\ x =  - 3

Step-by-step explanation:

{x}^{2}  - 2x = 15 \\  {x}^{2}  - 2x - 15 = 0 \\  {x}^{2}   + 3x - 5x - 15 = 0 \\ x(x + 3) - 5(x + 3) = 0 \\ (x - 5)(x + 3) = 0 \\ x - 5 = 0 \:  \:  \:  \:  \: or \:  \:  \:  \: x + 3 = 0 \\ x = 5 \:  \:  \:  \: or \:  \:  \:  \:  \:  \: x =  - 3

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Point Q would have the coordinates of (-10, 10, 4)
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3 years ago
For f(x)=2x+1 and g(x)=x+14 , find (g o f) (x).
Nataliya [291]

Answer:

(g o f) (x) = 2x + 16

Step-by-step explanation:

" (g o f) (x) )" is called "the composition of f and g."

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3 years ago
What is the square root of -1
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Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
on day in the fall, mark raked the leaves on 5 peoples lawns in 2.5 hours. one day in the summer, he mowed 6 peoples lawns in 1.
GuDViN [60]
<h2><u><em>Ans</em></u>wer: </h2>

Assuming he works at a constant rate, the daily rate Mark rakes lawns in the fall is 40% of the daily rate he mows lawns in the summer.

<h2><u><em>Step-by-step explanation: </em></u></h2>

Fall:

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Summer:

6 neighbours' lawns / 1.2 hours = 5 lawns per hour

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8 0
3 years ago
(1/3)^3 = ____?<br><br> Im just working in school cheating on khan acad lol
Alexus [3.1K]

Answer:

Step-by-step explanation:

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due to

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Best regards

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3 years ago
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