All categories

3 years ago

What is 1/6+1/2+1/4=?

1 answer:

8 0

0.91666666666You can search for any mathematical expression, using functions such as: sin, cos, sqrt, etc. You can find a complete list of functions here.RadDegx!Invsinlnπcoslogetan√AnsEXP<span>xy</span>()%AC789÷456×123−0.=<span>+

</span>

You might be interested in

50 POINTS!!!

Step2247 [10]

Answer:

well by looking at it , it would be for a.

3 0

2 years ago

Read 2 more answers

Suppose that y varies directly as the square root of x, and that y=21 when x=361. What is y when x=247? (Round off your answer t

igomit [66]

Answer:

17.37

Step-by-step explanation:

y varies inversely as the square root of x

Mathematically:

y = k.root x

We first find k here

To find k, we were made to know that y is 21 and x = 361

k = y/root.x

k = 21/root. 361

k = 21/19

now what is y when x = 247

From y = k.root x

y = 21/19 * root 247

y= 21/19 * 15.72

y = 17.37

8 0

2 years ago

According to the 2011 National Survey of Fishing, Hunting, and Wildlife-Associated Recreation, there were over 71 million wildif

suter [353]

Answer:

The probability that between 79% and 81%of the 500 sampled wildlife watchers actively observed mammals in 2011 is P=0.412.

Step-by-step explanation:

We know the population proportion π=0.8, according to the 2011 National Survey of Fishing, Hunting, and Wildlife-Associated Recreation.

If we take a sample from this population, and assuming the proportion is correct, it is expected that the sample's proportion to be equal to the population's proportion.

The standard deviation of the sample is equal to:

$\sigma_s=\sqrt{\frac{\pi(1-\pi)}{N}}=\sqrt{\frac{0.8*0.2}{500}}=0.018$

With the mean and the standard deviaion of the sample, we can calculate the z-value for 0.79 and 0.81:

$z=\frac{p-\pi}{\sigma}=\frac{0.79-0.80}{0.018} =\frac{-0.01}{0.018} = -0.55\\\\z=\frac{p-\pi}{\sigma}=\frac{0.81-0.80}{0.018} =\frac{0.01}{0.018} = 0.55$

Then, the probability that between 79% and 81%of the 500 sampled wildlife watchers actively observed mammals in 2011 is:

$P(0.79$

3 0

2 years ago

Can y’all solve this one

Soloha48 [4]

(f g)(x) means f(x) * g(x), so plug the value of each function in:

(x+2)(x-4)

And solve by distributing using FOIL:

Firsts: x * x = x²

Outers: x * -4 = -4x

Inners: 2 * x = 2x

Lasts: 2 * -4 = -8

Combine them all together:

x² - 4x + 2x - 8

Combine like terms (the -4x and 2x):

x² - 2x - 8

So the second to last one is correct.

6 0

3 years ago

Phil has 7 green marbles and 3 purple marbles in a bag. he removes a marble at random, records the color, puts it back, and then

Lesechka [4]

The probability of selecting a green marble in one turn is 7/7+3 which is 7/10. For 3 turns, we will do $\frac{7}{10} * \frac{7}{10} * \frac{7}{10} = \frac{343}{1000}$

7 0

2 years ago