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Fittoniya [83]
3 years ago
14

Nic is saving to buy a game system & games. He needs $500 total and earned $125 in one week. If he continues to make money a

t that rate, how long will it take him to save $500?
Mathematics
2 answers:
Evgesh-ka [11]3 years ago
5 0
4 weeks would be the correct answer
guajiro [1.7K]3 years ago
5 0
The answer to the problem is 4 and here is why:
If you take 4 times 125, you get 500. An easy way to do that in your head is 4 times 25 is 100, and 4 times 100 is 400, and 100 + 400 equals 500.
Ex:    4 x 125 = (4 x 25) + (4 x 100) = 500 
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3 years ago
Consider random samples of size 80 drawn from population A with proportion 0.48 and random samples of size 66 drawn from populat
gogolik [260]

Answer:

Standard error = 0.070

Step-by-step explanation:

Formula for the standard error of the distribution of differences in sample proportions is;

σ_(A - B) = √((p_a^(1 - p_a^)/n_a) + (p_b^(1 - p_b^)/n_b))

We are given;

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p_b^ = 0.13

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Thus;

σ_(A - B) = √((0.48(1 - 0.48)/80) + (0.14(1 - 0.13)/66))

σ_(A - B) = √0.00496545455

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3 years ago
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jenyasd209 [6]

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Range: (3,∞)

x-intercepts: none

y-intercepts: (0,7)

Interval positive: (3,∞)

Interval negative: none

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Interval decreasing: (-∞,7)

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7 0
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R+r+2r-r+4r combine like terms and solve
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Mariulka [41]

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3 years ago
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