2 years ago

Please help I'll mark brainliest

Mathematics

1 answer:

Natalka [10]2 years ago

7 0

Answer:

The answer is 1 3/4

Step-by-step explanation:

I added everything on a calculator

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A human heart beats an average of 80 beats per minute. How many heart beats is this in a day

vovangra [49]

Answer:

115200

Step-by-step explanation:

80 Beats Per Minute x 60 Minutes (1 hour) x 24 Hours (1 Day) = 115200

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3 years ago

Jacob made a circle-shaped poster for his geometry class.

krok68 [10]

circumference is L=2 $\pi r$
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3 years ago

If a thermometer indicates 40 degrees Celsius, what's the temperature in degrees Fahrenheit? A. 22°F B. 72°F C. 54°F D. 104°F

Elena L [17]

$F = 9/5C + 32$

F = 9/5(40) + 32
F = 72 + 32
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40°C is ~105°F, and the closest would be D.

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3 years ago

Which is equivalent to 216 1/3? A.3 B.6 C.36 D.72

nydimaria [60]

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3 years ago

A recent poll of 120 randomly selected adults who frequent the local farmer's market found that 54 have purchased reusable clot

Olenka [21]

Answer:

95% Confidence interval: (0.361,0.539)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 120

Number of farmers who reusable cloth bags, x = 54

$\hat{p} = \dfrac{x}{n} = \dfrac{54}{120} = 0.45$

95% Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96$

Putting the values, we get:

$0.45\pm 1.96(\sqrt{\dfrac{0.45(1-0.45)}{120}}) = 0.45\pm 0.089\\\\=(0.361,0.539)$

is the required 95% confidence interval for the proportion of adults who have purchased reusable cloth bags.

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3 years ago