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3 years ago

Solve x²-10x-20=0 using completing the square

Mathematics

1 answer:

vlabodo [156]3 years ago

4 0

Answer:x=5+-sq45

Step-by-step explanation:

X^2-10x-20=0

-10/2=-5^2=25

x^2-10x+25=20+25

(x-5)^2=45

sq(x-5)= x-5

x-5=+-sq45

x=5+-sq45

sq= squareroot symbol

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Which of the following comparisons is FALSE?

dybincka [34]

Answer:

Step-by-step explanation:

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3 years ago

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OleMash [197]

Answer:

Step-by-step explanation:

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3 years ago

What is the value of x in the equation <br> -5/8x=-160?

Helen [10]

Answer:

x= 1/256

Step-by-step explanation:

1. multiply both sides by 8x (answer: -5= 8x*-160)

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3 years ago

HOTELS The Lincoln’s hotel room costs $90 a night. An additional 10% tax is added. Hotel parking is $12 per day. The Lincolns ex

mart [117]

Answer:

5 nights

Step-by-step explanation:

Solve the inequality:

90x + 90(0.1)x + 12x + 30 $\leq$ 600

Add like terms:

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Isolate the variables:

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4 years ago