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Semenov [28]
2 years ago
7

Write an equation and solve.

Mathematics
1 answer:
mezya [45]2 years ago
8 0
Equation: 50+15x=200
solution: x= 10

it would take him 10 weeks to purchase the bike he wants.
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Vending machines can be adjusted to reject coins above and below certain weights. The weights of legal U.S. quarters have a norm
tigry1 [53]

Answer: The percentage of legal quarters will be rejected by the vending machine = 2.275%

Step-by-step explanation:

Given: The weights of legal U.S. quarters have a normal distribution with a mean of 5.67 grams and a standard deviation of 0.07 gram.

Let x be the weights of legal U.S. quarters .

Required probability: P(x5.81)

=P(\dfrac{x-\mu}{\sigma}\dfrac{5.81-5.67}{0.07})\\\\=P(z2)\approx0.02275    \ \ \ [By\  P-value\ calculator]

The percentage of legal quarters will be rejected by the vending machine = 2.275%

5 0
2 years ago
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mafiozo [28]

Answer:

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Step-by-step explanation:

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2 years ago
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vodomira [7]

Answer:

{-8, 4, 11}

Step-by-step explanation:

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6 0
2 years ago
Rewrite the equation y – 4x = –9 in slope-intercept form.
torisob [31]
Answer: y=4x-9


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