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3 years ago

What is b? − ( 3 − 6b ) = 6b + 5

Mathematics

1 answer:

zubka84 [21]3 years ago

3 0

Answer:

-1 1/2

Step-by-step explanation:

-(3-6b)=6b + 5 .remember to balance!!!!

-6b + 6b= 6b + 6b

-3=12b+5

-3+5=5-5

-8=12b now divide since its the inverse operation

think 12/-8= -1 1/2

so B equals - 1 1/2

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A square parking lot has an area of 12,996 square yards. a. What is the length of one side of the parking lot? b. How many yards

jenyasd209 [6]

Answer:

114 yards

456 yards

Step-by-step explanation:

Given that:

Area of square parking lot = 12,996 square yards

The lenght of one side of the parking lot :

Area of a square = a² ; a = side length

Hence ;

12996 = a²

√12996 = a

114 = a

Hence, length of one side = 114 yards

Yards of fence needed to enclose parking lot :

Perimeter of a square = 4a ; a = side length

Perimeter = 4(114)

Perimeter = 456 yards

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2 years ago

Martin uses his power saw every 15 seconds.How many times did he use it in one hour ?

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Answer:

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2 years ago

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Find the solution to the system 4x−7y=−12 −4x+3y=12

Nataly [62]

Answer:

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Step-by-step explanation:

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3 years ago

Find the slope of the line that passes through (8, 4) and (2, 9).

Alekssandra [29.7K]

The answers is not -5/6

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3 years ago

HELP FAST PLEASE!!!

Alisiya [41]

Answer:

$y = -0.75x + 9.5$

Step-by-step explanation:

Equation of a circle is given as :

$(x-a)^{2} + (y-b)^2 = r^{2} \\(x-6)^{2} + (y-5)^2 = 4^{2}\\x^{2} - 12x + 36 + y^{2} -10y + 25 = 16\\x^{2} - 12x + y^{2} -10y + 45 = 0\\$

Take the derivative of the above with respect to x

$2x - 12 + 2y dy/dx - 10 dy/dy = 0\\\frac{dx}{dy} = \frac{6 - x}{y-5} \\At (2,8) dy/dx = (6-2)/(8-5) = 4/3\\dy/dx = 4/3\\The slope of the tangent to the circle, m = \frac{-1}{dy/dx} \\m = \frac{-1}{4/3}\\m= -0.75$

The equation of the tangent is given by :

$y - y_{1} = m(x - x_{1})\\ y - 8 = -0.75(x - 2)\\y - 8 = -0.75x + 1.5\\y = -0.75x + 9.5$

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3 years ago

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