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2 years ago

BEST ANSWER GETS BRANLIEST AND 100 POINTS Simplify (√3+√48)(√2−√5).

Mathematics

2 answers:

Nadya [2.5K]2 years ago

7 0

Answer:

$5\sqrt{6}-5\sqrt{15}$

Step-by-step explanation:

$(\sqrt{3} )(\sqrt{2} )+(\sqrt{48} )(\sqrt{2} )-(\sqrt{3} )(\sqrt{5} )-(\sqrt{48} )(\sqrt{5} )$

$\sqrt{6}+\sqrt{2*3*2*2*2*2} -\sqrt{15}-\sqrt{2*3*2*2*2*5}$

$\sqrt{6}+4\sqrt{3*2} -\sqrt{15} -4\sqrt{3*5}$

$\sqrt{6}+4\sqrt{6} -\sqrt{15} -4\sqrt{15}$

$5\sqrt{6} -5\sqrt{15}$

UNO [17]2 years ago

7 0

OOOOIIIIIII its 5/6- 5/6

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F(x)=-2(x-3)(x+5) convert quadratic functions to standard form

jasenka [17]

Answer:

The answer is: f(x) = -2x^2 - 4x + 30

Step-by-step explanation:

Given:

f(x)=-2(x-3)(x+5)

Solve (x-3)(x+5) first, then multiply by -2:

f(x) = -2[(x - 3)(x + 5)]

f(x) = -2[x^2 -3x + 5x - 15]

f(x) = -2[x^2 + 2x - 15]

f(x) = -2x^2 - 4x + 30

Hope this Helps!! Have an Awesome Day!! (-:

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2 years ago

What is the solution set of x2 + 5x + 1 = 0?

DerKrebs [107]

Answer:

$\huge\boxed{\left\{-\dfrac{5+\sqrt{21}}{2};\ \dfrac{-5+\sqrt{21}}{2}\right\}}$

Step-by-step explanation:

$x^2+5x+1=0\\\\\text{Use the quadratic formula:}\\\\\text{For}\ ax^2+bx+c=0\\\\\Delta=b^2-4ac\\\\\text{if}\ \Delta < 0,\ \text{then the equation has no real solution}\\\text{if}\ \Delta=0,\ \text{then the equation has one real solution}\ x=\dfrac{-b}{2a}\\\text{if}\ \Delta>0,\ \text{then the equation has two real solution}\ x=\dfrac{-b\pm\sqrt{\Delta}}{2a}$

$\text{We have}\\\\a=1,\ b=5,\ c=1\\\\\Delta=5^2-4(1)(1)=25-4=21>0\\\\x=\dfrac{-5\pm\sqrt{21}}{2(1)}=\dfrac{-5\pm\sqrt{21}}{2}$

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Let FICA tax rates be 7.65% on the first $127,200 of income from wages, and 1.45% on any income from wages in excess of $127,200

malfutka [58]

Answer:

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2 years ago

Please see attachment for the question and answer choices.

Triss [41]

Answer:

about 81 years

Step-by-step explanation:

A graphing calculator can give you the answer easily.

You can solve the problem algebraically by putting in the given number and solving for t.

30000 = 32000/(1 +12.8e^(-.065t))

12.8e^(-.065t) = (32000/30000) -1 = 1/15

e^(-.065t) = 1/(15·12.8) = 1/192 . . . . . divide by 12.8

-0.065t = ln(1/192) ≈ -5.257 . . . . . . take the natural log

t = -5.257/-0.065 ≈ 80.88 . . . . . . . .divide by the coefficient of t

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puteri [66]

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Step-by-step explanation:

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