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3 years ago

9

A fair number cube has faces labeled 2, 3, 4, 5, 6, and 7. If the number cube is rolled 300 times, about how many times should t

he result be a prime number?
A. 50
B. 100
C. 150
D. 200

2 answers:

9966 [12]3 years ago

8 0

The answer would be D. 200

gregori [183]3 years ago

5 0

Answer:

200

Step-by-step explanation:

Out of those 6 numbers, 4 of them are prime sow we have the ratio of 2:3

2/3 * 300 = 200

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2 years ago

The area of a rectangular wall of a barn is 252 square feet. Its length is 10 feet longer than twice its width. Find the length

valentinak56 [21]

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Step-by-step explanation:

Let x = width of the wall.

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Then, as per given,

$252= (10+2x)x\\\\\Rightarrow\ 252=10x+2x^2\\\\\Rightarrow\ 2x^2+10x-252=0\\\\\Rightarrow\ x^2+5x-126=0\\\\\Rightarrow\ x^2+14x-9x-126=0\\\\\Rightarrow\ (x+14)-9(x+14)=0\\\\\Rightarrow\ (x+14)(x-9)=0\\\\\Rightarrow\ x=-14 \ or \ x= 9$

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So width = 9 feet and length = 10+2(9)=10+18 = 28 feet

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7 0

3 years ago