2 years ago

Oh yeah guys this has been a very eventful day today.

Mathematics

1 answer:

zimovet [89]2 years ago

6 0

Answer:

Congrats! I got mine like a year ago lol

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4(n+11)? please help

S_A_V [24]

Answer:

4n+44, you have to distribute the 4 into the parentheses.

Step-by-step explanation:

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2 years ago

Classify the real number. √2 1/11 7

Vsevolod [243]

7 is a real number .......

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2 years ago

Suppose a and b are the solutions to the quadratic equation 2x^2-3x-6=0. Find the value of (a+2)(b+2).

KonstantinChe [14]

Answer:

(a+2)(b+2) = 4

Step-by-step explanation:

We are given the following quadratic equation:

$2x^2-3x-6=0$

Let a a and b be the solution of the given quadratic equation.

Solving the equation:

$2x^2-3x-6=0\\\text{Using the quadratic formula}\\\\x = \dfrac{-b \pm \sqrt{b^2-4ac}}{2a}\\\\\text{Comparing the equation to }ax^2 + bx + c = 0\\\text{We have}\\a = 2\\b = -3\\c = -6\\x = \dfrac{3\pm \sqrt{9-4(2)(-6)}}{4} = \dfrac{3\pm \sqrt{57}}{4}\\\\a = \dfrac{3+\sqrt{57}}{4}, b = \dfrac{3-\sqrt{57}}{4}$

We have to find the value of (a+2)(b+2).

Putting the values:

$(a+2)(b+2)\\\\=\bigg(\dfrac{3+\sqrt{57}}{4}+2\bigg)\bigg(\dfrac{3-\sqrt{57}}{4}+2\bigg)\\\\=\bigg(\dfrac{11+\sqrt{57}}{4}\bigg)\bigg(\dfrac{11-\sqrt{57}}{4}\bigg)\\\\=\dfrac{121-57}{156} = \dfrac{64}{16} = 4$

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2 years ago

What are the coordinates of the midpoint between the points (-6, -2) and (-2,-5)?

Soloha48 [4]

B, -4, -7/2 is the midpoint

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2 years ago

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a builder has built 1/6 of the floors of a new skyscraper.if the builder has built 13 floors,how many floors will the skyscraper

madam [21]

You do 13 times 6

this equals, 78 floors

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3 years ago