4b×3b-2b=102 what is b

Answers

Answer 1

Answer: 4b×3b-2b=102
12b^2 - 2b = 102
12b^2 - 2b - 102 = 0
divide by 2
6b^2 - b - 51
(6b + 17)(b - 3) = 0
6b + 17 = 0
6b = -17
b = -17/6 or 2 5/6
b - 3 = 0
b = 3

Answer 2

Answer: $4b\cdot3b-2b=102\n 12b^2-2b-102=0\n 6b^2-b-51=0\n 6b^2+17b-18b-51=0\n b(6b+17)-3(6b+17)=0\n (b-3)(6b+17)=0\n\ b=3 \vee b=-(17)/(6)$

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The sum of a number and 4

Answers

Let n be the number.

n + 4

let p be the number

p+4=

A section in a stained glass window is shaped like a trapezoid.the top base is 4 centimeters and the bottom base is 2.5 centimeters long.if the area of the section of glass is 3.9 square centimeters,how tall is the section?

Answers

The formula for a trapezoid is a= (l+w)/2 * h (substitute knowns) 3.9= (2.5+4)/2 *h. (solve for h) 3.9= 3.25* h 3.9/3.25= h h= 1.2 The height is 1.2cm in length

What is 0.505 written as a fraction

Answers

0.505 = 0.505 / 1

Numerator = 0.505 × 10 × 10 × 10 = 505
Denominator = 1 × 10 × 10 × 10 = 1000

Numerator / Denominator = 505 / 1000

The Simplified fraction is

= 505/1000

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The speed of light is 186,282 miles per second. How many miles does light travel in 1hour?

Answers

$Divide\ 186,282\ by\ 3600\ seconds\ and\ you\ get\ \boxed{51.745}$

Sole x in the diagram 3x 75

Answers

Answer:

x=25

Step-by-step explanation:

Assuming you meant 3x = 75 what you want to do is isolate x. To isolate x you want to work backward. Since it is 3 times x you want to divide each side by 3 to get x on its own.

(3x)/3 = (75)/3

When you divide 3 and 3 you get one. 1x is represented by just an x so x=25.

What is 5 to the 12 power?

Answers

5 the 12th power is 244140625. hope I helped ya out. :)

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