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3 years ago

Solve bġ using the Quadratic Formula: x^2 = 3x - 1

Mathematics

1 answer:

grigory [225]3 years ago

3 0

Answer:

$x_{1}$ =(3+ $\sqrt{5}$ )/2

$x_{2}$ =(3- $\sqrt{5}$ )/2

Step-by-step explanation:

x^2-3x+1=0

$x_{1}$ =(3+ $\sqrt{3^2-4*1*1}$ )/2=(3+ $\sqrt{5}$ )/2

$x_{2}$ =(3- $\sqrt{3^2-4*1*1}$ )/2=(3- $\sqrt{5}$ )/2

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What is the answer it's not factor

Helen [10]

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3 years ago

Create an equation and solve. The cost of a concert ticket for a student is $2 less than one half of the cost for an adult. The

Sonja [21]

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Step-by-step explanation:

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3 years ago

Nicole has nine dollars to spend on cards she finds friends with the same amount of money to split the cost of a set once it cos

anyanavicka [17]

Answer:

Each Friend will get $\frac{x}{3}$ cards.

Step-by-step explanation:

Let the number of cards be x.

Given:

Amount Nicole used to spend on cards = $9

Total cost of one set =$27

Also, she finds friends with the same amount of money to split the cost of a set.

So, Number of friends she finds can be calculated by dividing the Cost of 1 set with amount of money Nichole used to spend on cards.

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Hence she finds 2 friends and 1 is nichole hence there are 3 persons carrying $9 to buy $27 set of card

Now, Number of cards each friend gets is equal to Total number of Cards in 1 set divided by number of people.

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4 0

3 years ago

Convert 21/40 to a percent

Naya [18.7K]

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5 0

3 years ago

Read 2 more answers

The average speed to go by car from home to college is 30 miles per hour. The average speed to go back home from college is 20 m

Levart [38]

Answer:

24 mph for both 60 miles and 40 miles.

Step-by-step explanation:

We need to find how long it takes to get to college and from it.

Speed x time (x) = Distance (60)

30x = 60

x=2

It takes two hours to get to college

20x = 60

x = 3

It takes 3 hours to get back. It's a total of 5 hours, 2 hours at 30mph and 3 at 20. Now we need to find the average

30+30+20+20+20=120

120/5= 24

The average speed for the round trip is 24.

To do the second part, we follow the same process, but replace 60 with 40 for distance.

30x=40

x= 1.33

20x=40

x=2

We can add the total distance and divide by total time to find the average.

The total distance is 80. Time is 3.33

80/3.33=24

The average speed is still 24.

3 0

3 years ago