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3 years ago

Use the quadratic formula to solve the equation. 2x^2-6x+1=0 Enter your answers, in simplified radical form, in the boxes.

Mathematics

2 answers:

Anika [276]3 years ago

5 0

Answer:

(3 (pm) sqrt(7))/2

Step-by-step explanation:

First step: Identify a,b, and c

a=2

b=-6

c=1

Second step: Find b^2-4ac (this is called the discriminant-I will call this D)

(-6)^2-4(2)(1)=36-8=28

Third step: Find the square root of the discriminant aka sqrt(D)

sqrt(28)

Let's see if we can simplify sqrt(28)

Here is there a factor of 28 that is a perfect square? How about 4? Yep!

sqrt(28)=sqrt(4)sqrt(7)=2sqrt(7).

Fourth Step: What is -b? If b=-6 then -b=6.

Fifth step: What is 2a? 2(2)=4

So the formula is

x=(-b (pm) sqrt(D))/(2a)

x=(step4 (pm) step 3)/(step 5)

x=(6 (pm) 2sqrt(7))/4

Simplify

x=(3 (pm) sqrt(7))/2

*pm means plus or minus

*sqrt( ) means square root of the number that follows in the ( )

ruslelena [56]3 years ago

5 0

Answer:

Just took it!

Step-by-step explanation:

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Please help me with this radical expression

LenaWriter [7]

Answer:

a. ⁴√x³

d. ¹²√x⁹

Step-by-step explanation:

First, simplify 9⁄12 to ¾. Then, according to the Definition of Rational Exponents [part II], ⁿ√aᵐ = aᵐ\ⁿ, you set your denominator equal to the root, and your numerator becomes your exponent, keeping your base INSIDE the radical.

I am joyous to assist you anytime.

6 0

2 years ago

Answer this quickly please: sin^(2)x-5cosx-5=0

pochemuha

X= 3.14 + 2*3.14*n.

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3 years ago

Freddie gets paid £1500 per month he spends 20% on rent the rest is spent on food, travel and socialising in the ratio 2:3:1 res

ki77a [65]

Answer:

THIS IS THE ANSWER

Step-by-step explanation:

20% of 1500 = 300

2+3+1=6

300÷6=50

food=50×2=100

Travel=50×3=150

socialising=50×1=50

6 0

3 years ago

A bag of flour weighs 15 kg. A baker has one bag of flour. She uses 1.065 kg every day. How much flour does she use in 8 days? H

Len [333]

Answer:

She uses 8.52 kgs of flour in 8 days

There are 6.48 kgs of flour left over after 8 days.

Step-by-step explanation:

First, you need to multiply 1.065 by 8 to get how much flour she uses in 8 days.

1.065 times 8 is 8.52. She uses 8.52 kgs of flour in 8 days.

Now, to get how much flour is left over after 8 days, you need to subtract 8.52 from 15 kgs.

15 - 8.52 = 6.48 kgs.

7 0

2 years ago

Oy is collecting rocks. She has 3 jars and 4 buckets. There are 2 rocks in each jar and 3 rocks in each bucket. How many rocks d

Molodets [167]

j = # of jars

b = # of buckets

y = total # of rocks

2j + 3b = y (2 rocks per jar, 3 rocks per bucket)

Because Joy has 3 jars you can plug 3 in for "j", and because she has 4 buckets you can plug in 4 for "b"

2(3) + 3(4) = y

6 + 12 = y

18 = y

7 0

2 years ago

Read 2 more answers