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3 years ago

What is the value of the expression below when w = 3. 4w^2 - 7w - 8

1 answer:

3 0

<h2>Answer:<em> </em><em><u>w =(-40-√4320)/-34=(20+6√ 30 )/17= 3.110 </u></em></h2><h2><em><u> w =(-40+√4320)/-34=(20-6√ 30 )/17= -0.757</u></em></h2>

Step-by-step explanation: The prime factorization of 4320 is

2•2•2•2•2•3•3•3•5

To be able to remove something from under the radical, there have to be 2 instances of it (because we are taking a square i.e. second root).

√ 4320 = √ 2•2•2•2•2•3•3•3•5 =2•2•3•√ 30 =

± 12 • √ 30

√ 30 , rounded to 4 decimal digits, is 5.4772

So now we are looking at:

w = ( -40 ± 12 • 5.477 ) / -34

Two real solutions:

w =(-40+√4320)/-34=(20-6√ 30 )/17= -0.757

or:

w =(-40-√4320)/-34=(20+6√ 30 )/17= 3.110

MY HEAD HURTS!

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

Which equation represents the line passing through the points (3, 2) and (-9, 6)?

Sliva [168]

Answer:

Step-by-step explanation:

The equation of a linear function in point-slope form is y – y1 = m(x – x1)

The point is A (x1 , y1)

in this exercice : x1 = 3 and y1 =2

let A(3,2) B(-9,6)

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3 years ago

Student Council held a bake sale to raise money for the local food pantry. They sold a total of 40 items which included pies and

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Answer: 18 pies, 22 cakes

Step-by-step explanation:

Let the number of pies sold be represented by p.

Let the number of cakes be represented by c.

The information in the question can then be represented in an equation as:

p + c = 40 ........ i

10p + 8c = 356 ....... ii

Multiply equation i by 10

Multiply equation ii by 1

10p + 10c = 400 ....... iii

10p + 8c = 356 ....... iv

Subtract iv from iii

2c = 44

c = 44/2

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3 years ago

a triangle has one side which is 1 foot long and another side which is 2 feet long. write a value that could be the length of th

Tpy6a [65]

Answer:

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Step-by-step explanation:

If side a = 1

and side b = 2

According to Pythagorean Theorem, a^2+b^2=c^2, the answer would be:

1^2+2^2=c^2

1+4=c^2

5=c^2

c=the square root of 5

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4 years ago