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3 years ago

13

The resting heart rate for an adult horse should average about μ = 43 beats per minute. Let x be a random variable that represen

ts the resting heart rate for an adult horse. Assume that x has a distribution that is approximately normal, with standard deviation σ = 10.5.

1 answer:

lara31 [8.8K]3 years ago

6 0

Answer:

451.5

Step-by-step explanation:

I'm rusted on the mathematics

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If x-y = 40 and x+y = 70, then what is the value of x squared -y squared ?

OlgaM077 [116]

Let's see what to do buddy...

____________________________

Reminder:

$(a + b)(a - b) = {a}^{2} - {b}^{2}$

So we need to just Multiply above equations like this :

$x + y = 70$

$x - y = 40$

$(x + y)(x - y) = 70 \times 40$

${x}^{2} - {y}^{2} = 2800$

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And we're done.

Thanks for watching buddy good luck.

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4 years ago

Alicia needs to waterproof her house’s back deck, which is 18 feet by 5 feet. The waterproof coating costs $6 for a can that cov

const2013 [10]

Step-by-step explanation:

18 × 5 = 90

90%30=3

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3 years ago

According to the United States Census Bureau, on September 11, 2014, the population of the United States was increasing by 11 pe

Papessa [141]

Answer:

317,988,000

Step-by-step explanation:

We have been given that according to the United States Census Bureau, on September 11, 2014, the population of the United States was increasing by 11 people every 12 seconds.

Let us find number of people increased in 1 minute as:

$11\times \frac{60}{12}=11\times 5 =55$

Now, we will convert 11 years into minutes and multiply by 55 to find increase in population in 11 years.

$\text{11 years}=11\text{ years}\times \frac{365\text{ days}}{\text{year}}\times \frac{24\text{ hours}}{\text{days}}\times \frac{60\text{ min}}{\text{hour}}$

$\text{11 years}=11\times 365\times 24\times 60\text{ min}$

$\text{11 years}=5,781,600\text{ min}$

Upon multiplying 5,781,600 by 55, we will get:

$\text{Population increase in 11 years}=5,781,600\text{ min}\times \frac{55 \text{ people}}{\text{min}}$

$\text{Population increase in 11 years}=5,781,600\times 55 \text{ people}$

$\text{Population increase in 11 years}=317,988,000 \text{ people}$

Therefore, the population of United States would increase 317,988,000 in 11 years.

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3 years ago

Select the correct answer from each drop-down menu.<br> what is 1 plus 1

babunello [35]

One plus one equals 2 let me know if you need more help

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2 years ago

Which is of the following geometric solids has 5 faces and 6 vertices

lianna [129]

i know a triangular prism has 5 faces and six vertices if that helps

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4 years ago