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KonstantinChe [14]
3 years ago
6

2x^2-5x+1=0 solve using quadratic formula

Mathematics
1 answer:
Gnesinka [82]3 years ago
5 0

Answer:

x=(5±√17)/4, or x ≈  2.281 and 0.219

Step-by-step explanation:

2x^{2} -5x+1\\

plug into quadratic formula

5+- \sqrt{(-5)-4(2)(1)}/2(2)

simplify

5+-\sqrt{25-8} /4

\frac{5+-\sqrt{17} }{4}   ≈  2.281 and 0.219

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A car travels 30 1/5 miles in 2/3 of an hour.What is the average speed in miles per hour of the car
slega [8]

The speed of car is 45.3 miles per hour.

Further explanation:

Speed is the rate at which an object changes position with respect to time.

Given

Distance = 30\frac{1}{5}\ miles\\Time=\frac{2}{3}

The formula for calculating speed is:

Speed = \frac{distance}{time}\\= \frac{30\frac{1}{5}}{\frac{2}{3}} \\=\frac{\frac{151}{5}}{\frac{2}{3}} \\=\frac{151}{5}*\frac{3}{2}\\=\frac{453}{10}\\=45.3\ miles\ per\ hour

The speed of car is 45.3 miles per hour.

Keywords: Speed, distance

Learn more about speed at:

  • brainly.com/question/12896802
  • brainly.com/question/13063819

#LearnwithBrainly

8 0
3 years ago
Kaylee is working two summer jobs, making $6 per hour walking dogs and $13 per hours landscaping. Last week Kaylee worked a tota
Aneli [31]

6:13 =83

6+13=19

1 part=83÷19

=4.37

6×4.4=26.4

13×4.4=57.2

26.4:57.2

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5 0
4 years ago
my son is 7 times older than my grandson and i am 12 times older than my grandson .if you added all of our ages together the sum
Ludmilka [50]
The equation would be x+7x+12x = 100
solving gives x=5
12×5=60
7×35

5+35+60=100

The age/answer is 60
8 0
3 years ago
Read 2 more answers
Find the volume of the triangular prism
gulaghasi [49]

Answer:

V = 5280 in^3

Step-by-step explanation:

The volume is found by

V = Bh  where B is the area of the base and h is the height

first we need to find the area of the base

The base is the triangle

We need to find the base dimension for the triangle

34^2 = 16^2 + b^2

34^2 -16^2 = b^2

900 = b^2

30 =b

B = 1/2 bh

  = 1/2 (30) *16

B =240

V = Bh

V = 240 * 22

V = 5280 in^3

3 0
3 years ago
Which relation is a function?(click all that apply)
iris [78.8K]

Answer:

Step-by-step explanation:

y=2x+1

y=x^2

The other one isn't a function because it won't pass the vertical line test. You can not use the same X in a function.

5 0
3 years ago
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