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3 years ago

6

There are 39 chips number from 1 to 39 placed in a barrel one chip is randomly pulled from the barrel what is the probability th

at the number on the chip is greater than or equal to 18

1 answer:

Alex Ar [27]3 years ago

7 0

P (number on chip is 18 or higher) = 22/39

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Which expression correctly represents eight times the difference of 4 and a number

expeople1 [14]

Answer:

The expression for two times the difference of 4 and a number is

$8(4-d)$

Step-by-step explanation:

To Find:

Write an expression for Eight times the difference of 4 and a number.

Solution:

Let the Unknown number be 'd'

Difference of 4 and d = ( 4 - d )

So One Time Difference of 4 and d = 1× ( 4 - d )

∴ Two Times Difference of 4 and d = 2× ( 4 - d )

∴ Eight Times Difference of 4 and d = 8× ( 4 - d )

The expression for Eight times the difference of 4 and d. will be

$8(4-d)$

The expression for Eight times the difference of 4 and a number is

$8(4-d)$

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3 years ago

Solving Rational equations. LCD method. Show work. Image attached.

Dmitry [639]

Answer:

$b=1$

Step-by-step explanation:

The given rational equation is

$\frac{2b-5}{b-2} -2=\frac{3}{b+2}$

The Least Common Denominator is $(b+2)(b-2)$ .

Multiply each term in the equation by the LCD.

$(b+2)(b-2)\times \frac{2b-5}{b-2} -(b+2)(b-2)\times2=(b+2)(b-2)\times\frac{3}{b+2}$

Simplify;

$(b+2)\times \frac{2b-5}{1} -2(b+2)(b-2)=(b-2)\times\frac{3}{1}$

$(b+2)(2b-5) -2(b+2)(b-2)=3(b-2)$

Expand and group similar terms

$2b^2-5b+4b-10 -2(b^2-4)=3b-6$

$2b^2-5b+4b-10 -2b^2+8=3b-6$

$-b-2=3b-6$

$3b+b=-2+6$

$4b=4$

$b=1$

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3 years ago

Theres more then one! wich of these numbers are written in scientific notation!

mariarad [96]

Step-by-step explanation:

0.92×10^3

I think it helps you

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3 years ago

Evaluate the following expression when x = -1, y = 2, z = -3, and<br> w = 4.<br> x² - y²

vaieri [72.5K]

Answer:

-3

Step-by-step explanation:

-1*-1=1

2*2=4

1-4

=-3

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3 years ago

Plz I need help with only the perimeter one

Tcecarenko [31]

Answer:

I believe the answer is 25.3

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3 years ago

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