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Nutka1998 [239]
3 years ago
6

Lola pulls two marbles fro. A bag that contains four red marbles four blue marbles and 12 yellow marbles without replacing them

what is the probability that she pulled out a red marble first and a yellow marble second ?express your answer in decimal form rounded to the nearest hundreth
Mathematics
1 answer:
Harrizon [31]3 years ago
7 0

|\Omega|=20\cdot19=380\\|A|=4\cdot12=48\\\\P(A)=\dfrac{48}{380}\approx0.13

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Jerry planted a pine tree that was 5 feet tall and a maple tree that was 10 feet tall. The pine tree grew 3 feet taller per year
stich3 [128]

The initial length of the pine tree=5 feet.

Groth rate of pine tree =3 feet/year.

The initial length of the pine tree =10 feet.

Groth rate of the maple tree =2 feet/year.

After x years, the height of the pine tree= 5+3x feet and

after x years, the height of the maple tree= 10+2x feet.

The inequality for which, after x year, the pine tree is taller than the maple tree is

5+3x>10+2x

\Rightarrow x>5 .

The inequality for which, the pine tree is at least as tall as the maple tree is 5+3x\geq10+2x.

\Rightarrow x\geq 5 .

Again, after 3x years, the height of the pine tree= 5+3(3x)=5+9x feet and

after 2x years, the height of the maple tree= 10+2(2x)=10+4x feet.

The inequality for which, after 3x years, the pine tree is taller than the maple tree was after 2x years is

5+9x>10+4x

\Rightarrow 5x>5

\Rightarrow x>1.

The inequality for which, the pine tree is at least as tall as the maple tree is 5+9x\geq10+4x.

\Rightarrow 5x\geq5

\Rightarrow x\geq 1.

5 0
3 years ago
Video games made up 0.86 of the total revenue for a small specialty store. Write this decimal as a fraction
Tom [10]

Answer:

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3 years ago
I need help with this :) (easy)
Pie
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6 0
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zhuklara [117]
The answer I got is 3 \frac{14}{25 }
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3 years ago
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