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AURORKA [14]
3 years ago
9

20n^2+3n=12n^2+4identify a,b,c​

Mathematics
1 answer:
masya89 [10]3 years ago
6 0

Answer:

a)  a=8,  b=3,  c=-4

b) (-3 + \sqrt{137})/16, (-3 - \sqrt{137})/16)

c) roots in decimal form are 0.54 and -0.92

Step-by-step explanation:

a) 8n² + 3n - 4

b) (-3±\sqrt{9+128}) ÷ 16

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Which expression is equivalent to
nirvana33 [79]

For this case, we must find an expression equivalent to:

\frac {-9x ^ {- 1} y ^ {- 9}} {- 15x ^ 5y ^ {- 3}}

By definition of power properties we have:

a ^ {- 1} = \frac {1} {a ^ 1} = \frac {1} {a}

Rewriting the previous expression we have:

The "-" are canceled and we take into account that:

\frac {9} {15} = \frac {3} {5}

So:

\frac {3} {5x^5 * x ^ 1 *y ^ 9* y ^ {- 3}} =

According to one of the properties of powers of the same base, we must put the same base and add the exponents:

\frac {3} {5x ^ {5 + 1} * y ^ {9-3}} =\\\frac {3} {5x ^ 6 * y ^ 6}

Answer:

\frac {3} {5x ^ 6 * y ^ 6}

Option B

3 0
3 years ago
Read 2 more answers
suppose y varies directly with x and y=5 when x=20. Write a direct variation equation then find the value of x when y=3/2
jek_recluse [69]
X=k*Y
K*Y=X
K=X/Y
K=20/5
K=4

For Y=3/2
X=k*3/2
X=4*3/2
X=6
6 0
3 years ago
The compound interest on a certain sum of money for 2 years is $208 and the simple interest for the same time at the same rate i
dlinn [17]
The answer is 208+200=408
7 0
2 years ago
A portion of a hiking trail slopes downward at about an 84° angle. To the
tangare [24]

C because if you divide the angle minus the feet you get 120

8 0
3 years ago
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4(3y – 6) = -3(8 – 4y)
Nadya [2.5K]

Answer:

0=0

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

4(3y−6)=−3(8−4y)

(4)(3y)+(4)(−6)=(−3)(8)+(−3)(−4y)(Distribute)

12y+−24=−24+12y

12y−24=12y−24

Step 2: Subtract 12y from both sides.

12y−24−12y=12y−24−12y

−24=−24

Step 3: Add 24 to both sides.

−24+24=−24+24

0=0

3 0
3 years ago
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