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3 years ago

It’s not A can someone plz help me with this I can’t find the answer to it plzzzzz help it be appreciated

Mathematics

2 answers:

Ludmilka [50]3 years ago

8 0

Answer:

177

Step-by-step explanation:

You have to multiply and you get 177

aev [14]3 years ago

5 0

Answer:

126

Step-by-step explanation:

You have to add the area of all the faces. 9+9+27+27+27+27

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5. Find the discriminant of 15x2 = 4x – 1 and describe

diamong [38]

Answer:

a) The discriminant of the equation = - 44

b)The nature of the roots will be imaginary.

c) $x = \frac{2 +\sqrt{11} i}{15} or, x = \frac{2 - \sqrt{11} i}{15}$

Step-by-step explanation:

Here, the given expression is $15x^{2} = 4x -1$

or, $15x^{2} - 4x + 1 = 0$

Now the discriminant (D) of a quadratic equation $ax^{2} +b x + c = 0$

D = $b^{2} - 4ac = (-4)^{2} - 4(15) (1) = 16 - (60) = -44$

Hence, the discriminant of the equation = - 44

As D< 0, so the roots will be imaginary.

Now,by quadratic formula : $x = \frac{-b \pm \sqrt{b^{2} - 4ac} }{2a}$

So, here $x = \frac{-(-4) \pm \sqrt{D} }{2a} = \frac{4 \pm \sqrt{(-44 )} }{30}$

So, either $x = \frac{4 + \sqrt{(-44 )} }{30} or, x = \frac{4 - \sqrt{(-44 )} }{30}$

or, $x = \frac{2 +\sqrt{11} i}{15} or, x = \frac{2 - \sqrt{11} i}{15}$

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3 years ago

What is the value of s ?

Leto [7]

Answer:

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Step-by-step explanation:

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What is the difference between 7/10-44/100

katrin2010 [14]

Answer:

7/10-44/100 70-44

100

=26/100

=13/50

Step-by-step explanation:

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11. For each table Ariella waits on at a restaurant, she is paid $4.00 plus 18% of the

lisabon 2012 [21]

Answer:

m=0.18b+4

She'll earn $10.30

Step-by-step explanation:

m=0.18b+4

m=0.18(35)+4

m=6.3+4

m=10.3

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3 years ago