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3 years ago

How do you factor x^2 - 2x - 2 = 0

Mathematics

1 answer:

Maru [420]3 years ago

5 0

Answer:

Step-by-step explanation:Step 1: Use quadratic formula with a=1, b=-2, c=-2.

−b±√b2−4ac

−(−2)±√(−2)2−4(1)(−2)

2(1)

2±√12

x=1+√3 or x=1−√3

Answer:

x=1+√3 or x=1−√3

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You have a bag that contains 20 quarters, 20 dimes, and 15 nickels. When randomly selecting two coins with no replacement find t

iogann1982 [59]

Answer:

P(2 quarters) = 19/ (13*16) = 19/208 = 0.0913

Step-by-step explanation:

probability of getting 2 quarters?

first draw: there are 20 quarters to choose from

second draw: there are 19 quarters left to choose

so Total coins are 65 coins

P(2 quarters) = P( 1st quarter)* P(2nd quarter)

P(2 quarters) = 20/65 * (19/64)

P(2 quarters) = 4/13 * 19/64

P(2 quarters) = 19/ (13*16) = 19/208

4 0

3 years ago

If there were 45 cars In a line that stretched 454 feet, what is the average car length?

jolli1 [7]

45 cars=454

Divide 45 on both sides to get the average length of a single car

1 car = 10.01 ft

7 0

3 years ago

Workout the value of x.

anyanavicka [17]

Answer: The value of X is 97 degrees

Explanation:

7 0

2 years ago

Hey, guys help me answer!

Sliva [168]

Hello and Good Morning/Afternoon

Let's take this problem step by step.

$5=\frac{1}{3}(5x-15)\\ 5=\frac{5}{3}x-5\\ 5+5= \frac{5}{3}x-5 +5\\10=\frac{5}{3}x\\ 10 * 3 = 3* \frac{5}{3}x\\30=5x\\\frac{30}{5} =\frac{5}{5}x\\ 6=x\\x=6$

What did we do in this problem

we ensured that both sides remained equally balanced in value
took everything step-by-step to make sure that there were no mistakes
to check it, we can plug it back into the original equation to see if it works

$5=\frac{1}{3}(5(6)-15)\\ 5=\frac{1}{3} (30-15)\\5=\frac{1}{3}*15\\ 5=5 \checkmark\\$

Answer: x = 6

Hope that helps!

#LearnwithBrainly

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2 years ago

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Read the problem and answer question 4 and 5 i’ll give brainliest.

erastova [34]

Answer:

samanthas i believe

Step-by-step explanation:

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3 years ago

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