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Delicious77 [7]

2 years ago

9

A bag contains 12 red, 30 blue, 20 green, 10 yellow, and 8 black marbles. Nancy chooses 1 marble from the bag. What is the proba

bility that the marble is red, blue, or black?

1 answer:

saul85 [17]2 years ago

6 0

Answer:

5/8

Step-by-step explanation:

12+30+20+10 +8 =80 total marbles

12+30+8=50 red blue and black

50/80

5/8

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If f(x)= -3x + 1, then f^-1(x)=

UNO [17]

Answer:

f^-1(x) = (x-1)/-3

Step-by-step explanation:

Invert equation:

Describe X in original function:

multiplied by -3

add 1

Reverse order:

subtract 1

divide by -3

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2 years ago

6. Emily rides her bike with a constant speed of

qaws [65]

Answer:

42 miles

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If it's a constant 12 miles per hour then it would be

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then you would add that with the 1/2 hour for

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36 + 6 = 42 miles traveled

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1 year ago

1.8(b - 5.3) - 4.2=5.8(b -2.3. What is the value of b

horrorfan [7]

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Step-by-step explanation:

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2 years ago

Can you think of three examples of real world parallel and/or perpendicular lines? Explain why they are important in the real-wo

Naddika [18.5K]

Answer: The road, crucifix/cross, sidewalks, railroads, and so much more.

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2 years ago

Read 2 more answers

Factories 54m3n + 81m4n2 b) 15x2y3z + 25x3y2z + 35x2y2z

Oliga [24]

<u>Part a)</u>

Given the expression

$54m^3n\:+\:81m^4n^2$

Apply exponent rule: $a^{b+c}=a^ba^c$

$54m^3n\:+\:81m^4n^2=54m^3n+81m^3mnn$ ∵ $m^4n^2=m^3mnn$

Rewrite 81 as 3 · 27

Rewrite 54 as 2 · 27

$=2\cdot \:27m^3n+3\cdot \:27m^3mnn$

Factor out the common term: 27m³n

$=27m^3n\left(2+3mn\right)$

Therefore,

$54m^3n\:+\:81m^4n^2=54m^3n+81m^3mnn=27m^3n\left(2+3mn\right)$

<u>Part B)</u>

Given the expression

$15x^2y^3z+25x^3y^2z+35x^2y^2z$

Apply exponent rule: $a^{b+c}=a^ba^c$

$15x^2y^3z+25x^3y^2z+35x^2y^2z=15x^2y^2yz+25x^2xy^2z+35x^2y^2z$

Rewrite as

$=3\cdot \:5y^2x^2zy+5\cdot \:5y^2x^2zx+7\cdot \:5y^2x^2z$

Factor out common term 5y²x²z

$=5y^2x^2z\left(3y+5x+7\right)$

Therefore,

$15x^2y^3z+25x^3y^2z+35x^2y^2z=5y^2x^2z\left(3y+5x+7\right)$

8 0

2 years ago