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2 years ago

What’s the answer to question 20?

Mathematics

1 answer:

Over [174]2 years ago

8 0

I think it would be c

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Question:

Tamiku [17]

Answer:

Step-by-step explanation:

$3x^2 + 12x + 6 = 0\\\\a=3\,,\ b=12\,,\ c=6\\\\\\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\ x=\dfrac{-12\pm\sqrt{12^2-4\cdot3\cdot6}}{2\cdot3}=\dfrac{-12\pm\sqrt{144-72}}{2\cdot3}=\dfrac{-12\pm\sqrt{72}}{2\cdot3}=\dfrac{-12\pm6\sqrt{2}}{6}\\\\x_1=\dfrac{6(-2+\sqrt{2})}{6}=-2+\sqrt2\\\\x_2=\dfrac{6(-2-\sqrt{2})}{6}=-2-\sqrt2$

8 0

2 years ago

PLEASE HELP ME ASAP!!!

Leokris [45]

Answer:

m(x)= 0 when X= 3

Step-by-step explanation:

2*3=6

6-6=0

For (2x-6)

3-4=-1

So -1*0=0

it can also be look at like this (0,-1)

7 0

2 years ago

Simplest form of 6 3/8 + 7 5/6 =

strojnjashka [21]

Step-by-step explanation:

first, add the whole numbers

6 + 7 = 13

then the fractions

3/8 + 5/6

we need to get common denominators

do you know how to do that

6 0

1 year ago

7 less than 4 times a number is 5 less than 6 times the same number. Find the number.

Alex73 [517]

Answer: -1

Step-by-step explanation:

(4*X-7) = (6X -5)

4X -7 = 6X - 5

2X = -2

X = -1

5 0

1 year ago

What is the value for y?<br> Enter your answer in the box.

lapo4ka [179]

Answer:

y = 14

Step-by-step explanation:

The sum of the angles in a triangle add to 180 degrees

50 + 2x+ 5y + 10 = 180

We know that 2x = 50 since they are the base angles of sides that have the same length, they must be the same

50 + 50 + 5y+10 =180

Combine like terms

110 + 5y =180

Subtract 110 from each side

110+5y-110 = 180-110

5y = 70

Divide each side by 5

5y/5 =70/5

y = 14

6 0

2 years ago

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