3 years ago

Diego can swim 1/2 of a mile in 2/3 of an hour what is his rate in miles per hour

Mathematics

1 answer:

irinina [24]3 years ago

3 0

<span> Diego can swim 3/4 of a mile per hour</span>

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During a recent drought, a water utility in a certain town sampled 100 residential water bills and found that 80 of the residenc

Anastasy [175]

Answer: 0.893

Step-by-step explanation:

Given : Sample size of residential water bills: n=100

Number of residences had reduced their water consumption over that of the previous year = 80

Then sample proportion: $\hat{p}=\dfrac{80}{100}=0.8$

Critical value for 98% confidence= $z_{\alpha/2}=2.326$

The upper bound for confidence interval for population proportion :

$\hat{p}+ z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$=0.8+ (2.326)\sqrt{\dfrac{0.8(1-0.8)}{100}}\\\\=0.8+0.09304=0.89304\approx0.893$

Hence, the 98% upper confidence bound for the proportion of residences that reduced their water consumption.=0.893

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3 years ago

A company has been forced to reduce its number of employees. Today the company has 34% fewer employees than it did a year ago. I

jenyasd209 [6]

Since there are 34% fewer, you multiply 297 x 0.34 = 100.98
Then you add 100.98 to 297 = 397.98
They had 397 employees.

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3 years ago

What theorem shows that DEF ≅ GFE?

seraphim [82]

Answer:

propotional theorem

Step-by-step explanation:

Propotional theorem is the suitable theorem

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Step-by-step explanation:

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bixtya [17]

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